United States Department of Agriculture

Tahoe National Forest 

Over-snow Vehicle Use 

Designation

Draft Environmental Impact Statement

Volume II. Appendices

Forest Service Tahoe National Forest April 2018
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Tahoe National Forest

i

Tahoe National Forest Over-snow Vehicle Use Designation

Draft Environmental Impact Statement

Tahoe National Forest

Nevada, Placer, Plumas, Sierra, and Yuba Counties, California

Lead Agency: USDA Forest Service

Responsible Official: Eli Ilano, Forest Supervisor

Tahoe National Forest

631 Coyote Street

Nevada City, CA 95959

For Information Contact: Joe Chavez, 

Forest Trails and Recreation Specialist

631 Coyote Street

Nevada City, CA 95959

Phone: (530) 478-6158

Abstract: The Forest Service proposes to designate areas and trails for public over-snow vehicle (OSV) 

use on the Tahoe National Forest. These designations would occur on National Forest System lands 

within the Tahoe National Forest. The Forest Service would also identify designated trails where 

grooming for public OSV use would occur within the Tahoe National Forest

Consistent with the Forest Service’s Travel Management Regulations at 36 CFR Part 212 Subpart C, 

areas and trails designated for public over-snow vehicle use would be displayed on a publicly available 

over-snow vehicle use map (OSVUM). Public OSV use that is inconsistent with the OSVUM would be 

prohibited under Federal regulations at 36 CFR §261.14.

This environmental impact statement (EIS) discloses the comparative analysis of the options being 

considered in designating areas and trails of the Tahoe National Forest for OSV use. We consider the 

environmental impacts of a proposed action, a no-action alternative, and three additional action 

alternatives developed in response to issues. A Notice of Intent to prepare an EIS was published in the 

Federal Register on February 23, 2015. After considering public comments received during the scoping 

period, and multiple interdisciplinary team discussions the Forest Service determined it would be 

necessary to modify the proposed action as reflected in this draft EIS (DEIS).

We encourage your review of this document. It is important that reviewers provide their comments at such 

times and in such a way that they are useful to the Forest Service’s preparation of the final EIS. 

Therefore, comments should be provided prior to the close of the comment period and should clearly 

articulate the reviewer’s concerns and contentions. Comments must be received or postmarked within 45 

days from the date of the Notice of Availability in the Federal Register. Failing to submit timely and 

specific comments can affect a reviewer’s ability to participate in subsequent administrative review or 

judicial review. Comments received in response to this solicitation, including names and addresses of 

those who comment, will be part of the public record for this proposed action. Comments submitted 

anonymously will be accepted and considered; however, anonymous comments will not provide the 

respondent with standing to participate in subsequent administrative review or judicial review.
Over-snow Vehicle Use Designation

Tahoe National Forest

ii

Once the final EIS is prepared, it and the associated draft decision document (Record of Decision) are 

subject to a pre-decisional administrative review process (objection process) pursuant to 36 CFR 218, 

subparts A and B. Objections will only be accepted from those who have previously submitted specific 

written comments regarding this proposed project during scoping or other designated opportunity for 

public comment in accordance with 36 CFR 218.5(a). Issues raised in objections must be based on 

previously submitted, timely, specific written comments regarding this proposed project unless based on 

new information arising after the designated comment opportunities.

Send comments to: Joe Chavez, on behalf of Eli Ilano, Forest Supervisor, Tahoe National Forest, 631 

Coyote Street, Nevada City, CA 95959; (530) 478-6158. Comments may also be sent via facsimile to 530-

478-6109, submitted on the project website at 

http://www.fs.fed.us/nepa/nepa_project_exp.php?project=45914, or sent via email to 

tahoe_nf_comments@fs.fed.us, with the email’s subject line, “Comments on Tahoe NF OSV 

Designation.” The publication date of the Notice of Availability in the Federal Register is the exclusive 

means for calculating the time to submit written comments on a proposed project or activity that is 

analyzed and documented in a DEIS (36 CFR 218.24(c)(2)).
Revised Draft Environmental Impact Statement – Volume II

Appendices

Tahoe National Forest

iii

Tahoe National Forest Over-snow Vehicle Use 

Designation

Revised Draft Environmental Impact Statement

Volume II. Appendices

The following appendices support the information documented in this revised draft 

environmental impact statement.

Contents

Appendix A. Scoping Comment Categories................................................................................... 1

Appendix B. Forest Plan Direction and 36 CFR §212.55 ............................................................... 3

Appendix C. How Cumulative Impacts were Considered............................................................ 13

Appendix D. Water Quality Best Management Practices............................................................. 31

Appendix E. Mitigations to Address the Minimization Criteria in the Travel Regulations for 

Areas Designated for OSV Use ............................................................................................ 35

Appendix F. Mitigations to Address the Minimization Criteria in the Travel Regulations for 

Trails Designated for OSV Use .......................................................................................... 131

Appendix G. Assumptions Map ................................................................................................. 291

Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

1

Appendix A. Scoping Comment Categories

Subject Approximate Percentage of Comments

Wildlife 5

Watersheds (soil and water) 4

Transportation 1

Socioeconomics 6

Recreation 42

Noise 10

National Forest Management Act 5

National Environmental Policy Act 15

Fisheries 2

Climate Change 2

Botany 2

Air Quality 6

Total 100%

Public Scoping Classification Code Definitions

Identification of Issues Description Classification 

Code

Significant (or Key) Issues

(Write an issue statement)

A point of disagreement, debate, or dispute over a proposed action 

based on environmental effects that can often be resolved by 

developing an alternative to the proposed action, modifying the 

proposed action in some way, and/or developing site-specific nonroutine mitigation measures or design features. OR

The issue cannot be adequately addressed with standard mitigation 

and is not resolved by existing management guidance or direction. 

An issue should describe a specific action and the environmental 

effect(s) expected to result from that action – “Cause-effect.” Key 

issues are those most relevant to the analysis (significant issues 

should only be used when referring to significant environmental 

effects (SEE), which are addressed in an EIS. For an EA, if you 

have SEE, you will need to do an EIS.)

1.1

OR

2.1

Alternatives

(Don’t need to write an issue statement but should 

address these comments)

A new alternative suggested by the public or another agency or 

group or a new alternative component suggests. OR

Suggestions for changes to the alternatives or the proposed action.

3.1

Nonsignificant (Non-Key) Issues:

A point of disagreement, debate or dispute over a 

proposed action based on environmental effects 

that fails into one of these categories. (Don’t write 

an IS; however, need to identify and eliminate from 

detailed study the issues which are not significant 

or which have been covered by prior environmental 

review (1506.3), narrowing the discussion of these 

issues in the statement to a brief presentation of 

why they will not have a significant effect on the 

human environment or providing a reference to 

their coverage elsewhere (40 CFR 1501.7(a)(3)), 

and FSH 1509.15 (12.41)).

Already decided by law, regulation or policy

Irrelevant to the decision to be made

Conjectural in nature or not supported by scientific evidence

Impacts are limited in extent, duration, and intensity due to project 

design or limited nature of impact

Can be addressed through implementation of routine or standard 

project design features or mitigation measures

Outside the scope of the proposed action

4.1

4.2

4.3

4.4

4.5

4.6

Suggestion/comment or procedural concern

(Don’t need to write an issue statement but should 

briefly address these comments)

General concerns, questions, or suggestions not specifically related 

to the proposed action’s effects

5.1

Document specific comments and/or document 

corrections

(Don’t need to write an issue statement but should 

briefly address these comments)

If we need to identify the document specific comments, we would 

need to set up “categories” that are specific to the resource or by 

some categories identified in the coding structure. Document 

specific comments especially if the proposed action is specific. Also 

includes document corrections of factual information corrections

6.1

Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

3

Appendix B. Forest Plan Direction and 36 CFR §212.55 

Tahoe National Forest Land and Resource Management Plan (USDA Forest 

Service 1990): Direction related to Over-snow Vehicle (OSV) Use

MA # Management 

Area (MA) OSV Use Recreation Opportunity Spectrum

1 Carman Open to winter over-the-snow vehicles. Roaded natural

2 Ida Designated routes only.1 Rural

3 Coolbrith Closed [to motor vehicle travel] in winter (TNF 

LRMP, pg. V-85).

Roaded natural

4 Sunnyside Open to winter over-the-snow travel. Semi-primitive motorized 

except along the main 

haul route - Roaded 

natural

5 Lavezzola Open to winter over-the-snow travel. Roaded natural and 

semi-primitive motorized 

in the Sierra Buttes area

6 Canyon Open [to over snow vehicles]. Roaded natural, except 

the inner gorge along 

Canyon Creek, which is 

semi-primitive motorized

7 Calpine Open to over snow vehicles in winter.2 (Refer to the 

LRMP map titled Transportation Element: Travel 

Plan for Off Road Vehicles (1989).) 

Roaded natural

8 Chapman Open to over-the snow travel in winter except area 

near Yuba Pass where travel confined to designated 

routes only.

Roaded natural

9 Lakes Basin Open for winter [motorized] use. Roaded natural except 

for semi-primitive 

motorized in the Sierra 

Buttes area

10 Cal Ida Open for winter [motorized] use. Roaded natural

 1 This direction applies to OSVs. Management Practice A5 (which is direction for this MA) states: 

“Restrict [motorized] use to designated routes for summer or winter periods or both.” Direction for this 

particular MA does not distinguish between summer and winter use so the assumption is the “designated 

routes only” applies to both.) (See TNF LRMP, pg. V-51 and description of “Off-Highway Vehicle 

Restrictions” for this MA.) 2 Designated routes only [in summer]. Refer to the LRMP map titled Transportation Element: Travel Plan for 

Off Road Vehicles (1989).
Over-snow Vehicle Use Designation

Tahoe National Forest

4

MA # Management 

Area (MA) OSV Use Recreation 

Opportunity Spectrum

11 Smithneck Open, except for designated routes only in Bear and 

Jones Valleys for protection of winter deer range 

and watershed research protection. (Notes: The 

northern portion of this MA is key deer winter range 

as shown on the LRMP map titled Fish and Wildlife 

Element: Fish and Wildlife Habitat (12/1985) and 

referenced in LRMP standard and guideline #27 (pg. 

V-30). Restricting OSV travel to designated routes in 

the northern portion of this MA is intended to protect 

key deer winter range. The designated routes only 

restriction in Jones and Bear Valleys was intended 

to apply to summer OHV use. Refer to the LRMP 

map titled Transportation Element: Travel Plan for 

Off Road Vehicles (1989) Note that the Tahoe 

National Forest Motorized Travel Management 

Project Record of Decision (2010) prohibits public 

cross-country wheeled motor vehicle travel.

Roaded natural

12 Antelope Closed to all motorized vehicle use, including overthe snow vehicles, from November 1 - May 1 during 

the critical wildlife life cycle... This restriction can be 

amended if weather conditions are such that deer 

are not on the winter range. (Note: This seasonal 

restriction effectively closes this MA to OSV use.)

Roaded natural

13 Forty-Niner Designated routes only.1 Roaded natural, except 

for a small portion of 

semi-primitive motorized 

in the Sierra Buttes area

14 Devils 

Postpile

Closed [to OSV use]. Semi-primitive nonmotorized

15 Harding Closed [to OSV use]. Roaded natural

16 Babbitt Closed [to OSV use]. Semi-primitive nonmotorized

17 Not used N/A

18 Henness Over-the-snow open. Roaded natural

19 Eighty-Nine Open over-the-snow. Rural around residential 

areas and developed 

site at southern end of 

MA: all other areas 

Roaded natural

20 Cornish Open [to over snow vehicles]. Roaded natural Semiprimitive motorized

within Middle Yuba 

gorge

21 Sardine-Worn Open over-the-snow. Roaded natural

22 Goodyears Designated routes only.1 Rural

23 Pendola Designated routes only, except closed south of the 

Long Point Road because of key winter deer range 

(between November 1 and May 1). (Note: This 

restriction effectively closes the area south of Long 

Point Road to OSV use.) This restriction can be 

amended weather conditions are such that deer are 

not on the winter range.

Roaded natural
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

5

MA # Management 

Area (MA) OSV Use Recreation 

Opportunity Spectrum

24 Oregon Designated routes only, except closed in wildlife 

areas such as Plum Valley, Lohman Ridge, and 

Studhorse Canyon (November 1 - May 1). (Note:

This restriction effectively closes the southwestern 

portion of this MA to OSV use. The closed area is

identified as key deer winter range, as shown on the 

LRMP map titled Fish and Wildlife Element: Fish 

and Wildlife Habitat (12/1985), which is referenced 

in LRMP standard and guideline #27 (pg. V-30).)

This restriction can be amended if weather 

conditions are such that deer are not on the winter 

range.

Roaded natural

25 MiltonJacksonOver-the-snow vehicle travel open. Roaded natural

26 Galloway Designated routes only.1

27 Not used N/A

28 Pinoli Macklin Creek Drainage and Austin Meadows are 

closed. Designated routes only [in summer] from 

Pinole Peak and Pyramid Peak on the west to the 

eastern boundary of the Management Area3; open 

to over-the-snow. Seasonal closure in the deer 

holding area when the deer are using the area. 

Roaded natural except 

semi-primitive motorized 

along Middle Yuba 

River.

29 Pass Designated routes only.1 Rural

30 Ruby Designated routes only.1 Rural

31 Kyburz Restricted winter [designated routes only],4 except 

over-the-snow vehicle travel is prohibited from 

February 1 to July 15.

Roaded natural

32 StampedeBocaOpen [to] over-the-snow [vehicles]. Roaded natural

33 Lola Over-the-snow vehicle travel open. Roaded natural with 

rural around ski base 

facilities if developed

34 Bullards Bar Designated routes only.1 Rural in developed sites, 

Roaded Natural in all 

other areas

35 Independence Closed [to over-the-snow vehicles]. Semi-primitive nonmotorized

36 Sagehen 

Basin

Suggested routes winter (Open). Roaded natural

37 Meadow Lake Open to over-the-snow vehicle travel.5 Semi-primitive motorized

38 Billy Open for over-the-snow [vehicles] in winter. Roaded natural and rural

39 Bowman Open to over-the snow [vehicles]. Semi-primitive motorized

 3 The restriction to designated routes only was intended to apply to summer OHV use as indicated on the LRMP map titled 

Transportation Element: Travel Plan for Off Road Vehicles (1989). Note that the Tahoe National Forest Motorized Travel 

Management Project Record of Decision (2010) prohibits public cross-country wheeled motor vehicle travel. 4 Over snow vehicle use is restricted to designated routes assigned by Management Practice A5 for this MA (TNF LRMP, 

pg. V-206 and V-51). 5 This MA’s restriction to designated routes only applies to travel over land (i.e., summer use). Refer to the LRMP map 

titled Transportation Element: Travel Plan for Off Road Vehicles (1989). The Tahoe National Forest Motorized Travel 

Management Project Record of Decision (2010) prohibits public cross-country wheeled motor vehicle travel.
Over-snow Vehicle Use Designation

Tahoe National Forest

6

MA # Management 

Area (MA) OSV Use Recreation 

Opportunity Spectrum

40 Moonshine Designated routes only.1 Rural

41 Grouse Open to over-the snow vehicles. Semi-primitive nonmotorized

42 South Yuba Most of the area within this MA is open to over-thesnow use with the following exception:

Southwest of Bloody Run Creek and the Graniteville 

Road is designated routes only, except closed 

November 1 to May 1. (Notes: This seasonal 

restriction effectively closes this portion of the MA to 

OSV use. This seasonal restriction applies to an 

area delineated as key deer winter range on the 

LRMP map titled Fish and Wildlife Element: Fish 

and Wildlife Habitat (12/1985), which is referenced 

in LRMP standard and guideline #27 (pg. V-30).)

This restriction can be amended if weather 

conditions are such that deer are not on the winter 

range.

Roaded natural except 

semi-primitive motorized 

along the Middle Yuba 

River, part of South 

Yuba River, and Canyon 

Creek from Holbrook 

Flat to Windy Point Cliff

43 Sagehen 

Station

Closed [to over-the-snow vehicles]. Roaded natural

44 Castle The Pacific Crest Trail is closed. Open over-thesnow, except in the Castle Valley and Round Valley 

areas, where travel will be restricted to designated 

routes only.

Semi-primitive motorized

45 Meadow Open to over-the-snow vehicles. Roaded natural

46 Prosser Hill Open, over-the-snow [vehicles]. Roaded natural

47 Fordyce Open to over-the-snow [vehicle] travel - winter. Semi-primitive 

motorized.

48 Red Open [to over-the snow vehicles]. Semi-primitive motorized 

except Roaded natural in 

western half of section 

18, T.17.N, R.13 E.

49 Magonigal Open to over-the-snow [vehicle] travel. Roaded natural except 

semi-primitive motorized 

in vicinity of upper Lola 

Montez Lake.

50 Prosser 

Reservoir

Open [to] over-the-snow [vehicle travel]. Rural in developed sites 

and Roaded natural 

elsewhere.

51 Hirschdale Open, over-the-snow [vehicle travel]. Rural

52 Fuller Open to over-the-snow [vehicle] travel. Rural

53 Donner Open [to over-the snow vehicles]. Rural or Roaded natural. 

See element map for 

detail.

54 Truckee Closed in developed administrative sites. 

Designated routes only for remainder.1

Rural

55 Boreal Ridge Closed [to over-the-snow vehicles]. Rural

56 Donner Pass Designated routes only1, except open over-thesnow, in Section 14, north of Soda Springs.Rural and Roaded 

natural per the initial 

inventory
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

7

MA # Management 

Area (MA) OSV Use Recreation 

Opportunity Spectrum

57 Spaulding Designated routes only3 in vicinity of Cisco Grove 

and Big Bend. Remainder of MA is open [to overthe-snow vehicles].

Rural

58 Steephollow Closed to over-the-snow vehicle travel. Roaded natural

59 Casa Loma Designated routes only.1 Seasonal closure on key 

winter deer range November 1 to May 1, when deer 

are using the area. (Note: This seasonal restriction 

effectively closes this MA to OSV use.)

Roaded natural

60 Summit Open [to over-the-snow vehicles] in winter, except 

for special-use permit areas (includes ski areas).

Rural with portions 

roaded natural

61 Twenty Open to over-the-snow travel. Roaded natural

62 Queens Designated routes only winter and summer. Semi-primitive motorized

63 Emigrant Designated routes only3 in vicinity of Cisco Grove 

and Big Bend. Remainder of MA is open [to overthe-snow vehicles].

Rural

64 East Orchard Closed [to over-the-snow vehicles]. Rural

65 Chalk Open, except restricted6 in Burlington Ridge area 

and Greenhorn Road, November 1 to May 1. This 

restriction can be amended if weather conditions are 

such that deer are not on the winter range.

Roaded natural

66 Yuba Gap Open [to over-the-snow vehicles]. Rural

67 Mears Open to over-the-snow [vehicle] travel. Roaded natural

68 Sawtooth Open [to over-the-snow vehicles]. Roaded natural

69 Truckee River Designated routes only1, except for Pole, Silver, and 

Deep Creek drainages, which are closed to overthe-snow vehicles.

Rural

70 Pole Open [to] over-the-snow [vehicles], except in the 

Deep, Silver, and Pole Creek drainages, where it is 

closed to over-the-snow [vehicles].

Roaded natural

71 Tinkers Winter open [to] over-the-snow vehicles, except in 

developed ski resorts, where it is closed [to overthe-snow vehicles]. Closed to over-the-snow 

[vehicles] in the Pole, Deep, and Silver Creek 

drainages.

Rural for Squaw Valley, 

rural for Sugar Bowl and 

Upper Cold stream 

Canyon, semi-primitive 

non-motorized for Lower 

Shirley Canyon, Roaded 

natural for the balance of 

the area

72 Glacier 

Meadows

Closed [to over-the-snow vehicles]. Semi-primitive nonmotorized

73 Monumental Open [to over-the-snow vehicles]. Roaded natural

74 Martis Closed [to over-the-snow vehicles]. Roaded natural

75 Onion Closed [to over-the-snow vehicles]. Semi-Primitive nonmotorized within most of 

the area. Roaded natural 

appearing along Soda 

Springs Riverton Road. 

Both are subject to 

research objectives

 6 Based on the Management Practices (A4 and A5) assigned to the Chalk MA, “restricted” means that OSVs are limited to 

designated routes only. (See TNF LRMP, pg. V-354 and V-51.)
Over-snow Vehicle Use Designation

Tahoe National Forest

8

MA # Management 

Area (MA) OSV Use Recreation 

Opportunity Spectrum

76 Loch Leven Open to over-the-snow travel. Roaded Natural

77 Cisco Butte Closed [to over-the-snow vehicles]. Rural

78 Blue Open [to over-the-snow vehicles]. Adjacent to 1-80, rural; 

other areas Roaded 

natural

79 Cedars Designated routes only1 [in the western portion of 

this MA, specifically section 10, the northwest 

quarter of section 11, the northeast corner of section 

16, and section 20]. Note: The LRMP classifies the 

eastern portion of this MA as semi-primitive, nonmotorized (LRMP, p. V-414). Also, refer to the 

LRMP map titled Recreation Element: Recreation 

Opportunity Spectrum (1989). Hence, the eastern 

portion of this MA is closed to OSV use.

Roaded natural and 

semi-primitive motorized 

in the western portion 

and semi-primitive nonmotorized in the eastern 

portion

80 Granite Chief Closed [to over-the-snow vehicles]. Primitive

81 Snow Closed except for designated routes [in summer]. 

Open to over-the-snow travel in semi-primitive 

motorized and roaded natural areas.

(Note: The LRMP map titled Recreation Element: 

Recreation Opportunity Spectrum (1989) shows 

most of this MA is classified as semi-primitive nonmotorized and therefore closed to OSV use. (Refer 

to the LRMP map titled Transportation Element: 

Travel Plan for Off Road Vehicles (1989).) Sections 

14 and 16 are classified as semi-primitive motorized; 

these sections are open to OSV use.

Semi-primitive nonmotorized, semi-primitive 

motorized, and roaded 

natural.

82 North Fork Closed [to over-the-snow vehicles]. Semi-primitive nonmotorized

83 WabenaSteamboatOpen [to] over-the-snow vehicles. Roaded natural

84 HumbugSailor This MA is open to over-the snow vehicles7 with the 

following exceptions: 

All routes into the American (MA #087) and the 

North Fork of the American River (MA #082) are 

closed to motorized vehicles. Permits may be 

granted for exceptions. 

On key winter deer range, closed November 1 to 

May 1. (An area of key deer winter range is located 

at the southwestern edge of this MA. Refer to the 

LRMP map titled Fish and Wildlife Element: Fish 

and Wildlife Habitat (12/1985), which is referenced 

in LRMP standard and guideline #27 (pg. V-30). 

Note that this seasonal restriction effectively closes 

a small area of this MA to OSV use.) This restriction 

can be amended if weather conditions are such that 

deer are not on the winter range.

Roaded natural.

85 Sugar Pine 

Point

Closed [to over-the-snow vehicles]. Semi-primitive nonmotorized.

 7 Designated routes only [in summer]. (Refer to the LRMP map titled Transportation Element: Travel Plan for Off Road 

Vehicles (1989). Note that the Tahoe National Forest Motorized Travel Management Project Record of Decision (2010) 

prohibits public cross-country wheeled motor vehicle travel.)
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

9

MA # Management 

Area (MA) OSV Use Recreation 

Opportunity Spectrum

86 Scott Designated routes only, winter and summer, except 

as otherwise authorized by special-use permit. (Note 

the Alpine Meadows Ski Area is closed to OSV use.)

Roaded natural; rural for 

base facilities of ski 

areas and for the private 

land within the area.

87 American Closed [to over-the-snow vehicles]. Semi-primitive nonmotorized

88 Squaw Peak Closed [to over-the-snow vehicles]. Rural

89 French Open to over-the-snow vehicles. Rural for developed 

sites. Roaded natural for 

all other areas.

90 Divide Open to over-the-snow vehicles. Roaded natural

91 Sunflower Open winter to over-the-snow vehicles. Semi-primitive nonmotorized in Duncan 

Creek and Little 

Robinson Valley. 

Roaded natural in other 

areas.

92 Peavine Open to over-the-snow vehicles in winter. Roaded natural for those 

areas with vegetation 

management, and semiprimitive motorized for 

the steep canyon lands.

93 Ward Closed [to over-the-snow vehicles]. Rural

94 Elliot Closed [to over-the-snow vehicles]. Roaded natural

95 Macy Closed [to over-the-snow vehicles]. Roaded natural

96 Sugar Pine Open [to over-the-snow vehicles] in winter. Roaded natural

97 Big Open to over-the snow vehicles. Roaded natural

98 Eldorado Open to over-the snow vehicles. Roaded natural for the 

areas with vegetation 

management and semiprimitive motorized for 

the steep canyon lands.

99 Mosquito Open to over-the snow travel. Roaded natural

100 Lyon 

Peak/Needle 

Lake

Closed [to over-the-snow vehicles]. Semi-primitive, nonmotorized

101 Brimstone Open to over-the-snow vehicles.8 (Refer to the 

LRMP map titled Transportation Element: Travel 

Plan for Off Road Vehicles (1989).) 

Roaded natural.

 8 Designated routes only [in summer]. Refer to the LRMP map titled Transportation Element: Travel Plan for Off Road 

Vehicles (1989). Note that the Tahoe National Forest Motorized Travel Management Project Record of Decision (2010) 

prohibits public cross-country wheeled motor vehicle travel.)
Over-snow Vehicle Use Designation

Tahoe National Forest

10

MA # Management 

Area (MA) OSV Use Recreation 

Opportunity Spectrum

102 End of the 

World

Designated routes only1 except seasonal closure of 

deer holding area during the period September 15 to 

December 31 annually. During winters with low 

precipitation, this area will be closed. (Note: The 

deer holding area is shown on the LRMP map titled 

Fish and Wildlife Element: Fish and Wildlife Habitat

(12/1985), which is referenced in LRMP standard 

and guideline #27 (pg. V-30).) This restriction can be 

amended if weather conditions are such that deer 

are not on the holding area.

Roaded natural for most 

of the area and semiprimitive motorized in the 

Middle Fork of the 

American River Canyon.

103 West Seed 

Orchard

Designated routes only.1 Roaded natural.

104 Grouse Falls Closed [to over-the-snow vehicles]. Semi-primitive nonmotorized.

105 Barker Over-the-snow [vehicles], open. Roaded natural, Semiprimitive motorized for 

the southwest portion of 

the MA.

106 Big Oak Closed November 1 to May 1. (Note: This seasonal 

restriction effectively closes this MA to OSV use.) 

This restriction can be amended if weather 

conditions are such that deer are not on the winter 

range.

Roaded natural.

107 Big Tree Closed [to over-the-snow vehicles]. Roaded natural.

108 Little Oak On key winter deer range, closed November 1 to 

May 1. (Note: Key deer winter range is displayed on 

the LRMP map titled Fish and Wildlife Element: Fish 

and Wildlife Habitat (12/1985), which is referenced 

in LRMP standard and guideline #27 (pg. V-30).) 

This restriction can be amended if weather 

conditions are such that deer are not on the winter 

range.

Roaded natural and 

semi-primitive motorized 

in the Middle Fork of the 

American River Canyon.

109 Berry Open for over-the-snow [vehicle] use. Roaded natural.

Sierra Nevada Forest Plan Amendment

Forestwide Standards and Guidelines

Standards and guidelines described in this section apply to all land allocations (other than wilderness 

areas and wild and scenic river areas) unless stated otherwise (2004 Record of Decision, page 49).

Wheeled Vehicles

Prohibit wheeled vehicle travel off of designated routes, trails, and limited off highway vehicle 

(OHV) use areas. Unless otherwise restricted by current forest plans or other specific area standards 

and guidelines, cross-country travel by over-snow vehicles would continue (2004 Record of 

Decision, page 59).

36 CFR 212.55: Criteria for designation of roads, trails, and areas.

(a) General criteria for designation of National Forest System roads, National Forest System trails, 

and areas on National Forest System lands. In designating National Forest System roads, National 

Forest System trails, and areas on National Forest System lands for motor vehicle use, the 
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Tahoe National Forest

11

responsible official shall consider effects on National Forest System natural and cultural resources, 

public safety, provision of recreational opportunities, access needs, conflicts among uses of National 

Forest System lands, the need for maintenance and administration of roads, trails, and areas that 

would arise if the uses under consideration are designated; and the availability of resources for that 

maintenance and administration.

(b) Specific criteria for designation of trails and areas. In addition to the criteria in paragraph (a) of 

this section, in designating National Forest System trails and areas on National Forest System lands, 

the responsible official shall consider effects on the following, with the objective of minimizing: 

(1) Damage to soil, watershed, vegetation, and other forest resources; (2) Harassment of wildlife and 

significant disruption of wildlife habitats; (3) Conflicts between motor vehicle use and existing or 

proposed recreational uses of National Forest System lands or neighboring Federal lands; and 

(4) Conflicts among different classes of motor vehicle uses of National Forest System lands or 

neighboring Federal lands.

In addition, the responsible official shall consider: (5) Compatibility of motor vehicle use with 

existing conditions in populated areas, taking into account sound, emissions, and other factors. 

(c) Specific criteria for designation of roads. In addition to the criteria in paragraph (a) of this 

section, in designating National Forest System roads, the responsible official shall consider: (1) 

Speed, volume, composition, and distribution of traffic on roads; and (2) Compatibility of vehicle 

class with road geometry and road surfacing. 

(d) Rights of access. In making designations pursuant to this subpart, the responsible official shall 

recognize: (1) Valid existing rights; and (2) The rights of use of National Forest System roads and 

National Forest System trails under § 212.6(b). (e) Wilderness areas and primitive areas. National 

Forest System roads, National Forest System trails, and areas on National Forest System lands in 

wilderness areas or primitive areas shall not be designated for motor vehicle use pursuant to this 

section, unless, in the case of wilderness areas, motor vehicle use is authorized by the applicable 

enabling legislation for those areas.

Draft Environmental Impact Statement – Volume II

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Tahoe National Forest

13

Appendix C. How Cumulative Impacts were Considered

We considered whether the potential impacts of the alternatives would accumulate with the impacts of 

past, other present and reasonably foreseeable future actions in both time and geographic space (FSH 

1909.15, Sec. 15.2). If the proposed action or alternatives being analyzed in this DEIS would result in no 

direct or indirect impacts, there could be no cumulative impacts. It logically follows that if the direct and 

indirect impacts of the action would occur within a different context than the impacts of past, present, and 

reasonably foreseeable future actions, there would also be no potential for impacts to accumulate in time 

and geographic space. 

Consideration of Past Actions

The analysis of cumulative impacts begins with consideration of the direct and indirect impacts on the 

environment that are expected or likely to result from the proposed action and alternatives. Once the 

direct and indirect impacts are determined, we then look for existing (residual indirect) impacts of past 

actions.

Only those residual impacts from past actions that are of the same type, occur within the same geographic 

area, and have a cause-and-effect relationship with the direct and indirect impacts of the proposed action 

and the alternatives are considered relevant and useful for the cumulative impacts analysis.

To understand the contribution of past actions to the cumulative impacts of the alternatives, this analysis 

relies on current environmental conditions as a proxy for the impacts of past actions. This is because 

existing conditions reflect the aggregate impact of all prior human actions and natural events that have 

affected the environment and might contribute to cumulative impacts.

The cumulative impacts analysis does not attempt to quantify the impacts of past human actions by 

adding up all individual residual impacts of prior actions on an action-by-action basis. There are practical 

reasons for not taking this approach. First, a catalog and analysis of all past actions would be impractical 

to compile and unduly costly to obtain. Current conditions have been impacted by innumerable actions in 

the past, and isolating the impacts of each individual past action that might continue to have residual 

impacts would be nearly impossible.

Second, providing the details of past actions on an individual basis would not be useful to predict the 

cumulative impacts of the proposed action and alternatives. In fact, focusing on individual impacts of past 

actions would be less accurate than looking at existing conditions. This is because there is limited 

information on the environmental impacts of individual past actions and one cannot reasonably identify 

each and every past action that has incrementally contributed to current conditions. By looking at current 

conditions, we are sure to capture all the residual impacts of past human actions, regardless of which 

particular action or event contributed those impacts.

This practice adheres to direction in the Council on Environmental Quality’s interpretive memorandum of 

June 24, 2005, regarding analysis of past actions, which states, “agencies can conduct an adequate 

cumulative effects analysis by focusing on the current aggregate effects of past actions without delving 

into the historical details of individual past actions.” For these reasons, our analysis of past actions is 

based on current environmental conditions.
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Consideration of Reasonably Foreseeable Future Actions

Cumulative impacts can only occur when the likely impacts resulting from the proposed action or 

alternatives overlap spatially and temporally with the likely impacts of reasonably foreseeable future 

actions (FSH 1909.15, Sec. 15.2).

The Code of Federal Regulations at 36 CFR Part 220 provides direction for identifying reasonably 

foreseeable future actions that should be considered in the analysis of cumulative impacts. Reasonably 

foreseeable future actions are those Federal or non-Federal activities not yet undertaken, for which there 

are existing decisions, funding, or identified proposals” (36 CFR 220.3). 

“Identified proposals for Forest Service actions are those for which the Forest Service has a goal and is 

actively preparing to make a decision on one or more alternative means of accomplishing that goal and 

the effects can be meaningfully evaluated (40 CFR 1508.23)” (36 CFR 220.4(a)(1)).

The relevance and usefulness of other ongoing or reasonably foreseeable future activities or events that 

might result in impacts that would accumulate with the specific direct and indirect impacts to specific 

resources depends on the context in which those direct and indirect impacts are considered. Those actions 

and events are discussed in the relevant resource sections.

Therefore, the other present and reasonably foreseeable future actions were considered in two phases. The 

first phase determined whether another present or reasonably foreseeable action was relevant and useful 

to the analysis. The other present or reasonably foreseeable future action would only be relevant and 

useful if its impacts would accumulate with the impacts of the alternative being analyzed. The second 

phase determined the cumulative impacts of those actions determined to be relevant and useful.

Other Present and Reasonably Foreseeable Future Actions Considered 

in Cumulative Impacts Analyses

Routine maintenance occurs throughout the project area on roads and in campgrounds. Routine Forest 

Service use of mineral material sources occurs in these designated areas throughout the project area. 

Routine noxious weed management (hand pulling/digging) occurs along forest roads throughout the 

project area. A wide range of recreational use occurs in all seasons across the forest, and forestwide 

campgrounds and roads receive routine use during the months that climate conditions allow. Ongoing 

maintenance and use of communication sites and personal use woodcutting occur throughout the project 

area. Ongoing actions and reasonably foreseeable future actions included include snowplowing of winter 

recreation parking areas.

Grazing on range allotments is also ongoing. Twenty-seven of the Tahoe National Forest’s 37 grazing 

allotments are active and livestock grazing and associated activities are taking place in these areas. Some 

trampling and herbivory of many sensitive plant species are likely taking place, but the sustainability of 

these species are being maintained. These allotments are shown in the following table.
Draft Environmental Impact Statement – Volume II

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15

Tahoe National Forest Grazing Allotments

Allotment Livestock Season of Use AUMs Allotment Acres

American River Ranger District

• Chipmunk Cattle 8/1 to 10/31 487 34,321

• Mosquito Cattle 6/1 to 9/30 1,059 27,011

• Deadwood None-Vacant Vacant 0 11,418

• Duncan Sailor None-Vacant Vacant 0 23,836

• Sugar Pine None-Vacant Vacant 0 22,322

• Volcano None-Vacant Vacant 0 11,052

Sierravile Ranger District

Antelope Cattle 4/25 to 6/26 156 12,266

Bear Valley Cattle 6/1 to 9/1 404 14,239

Beckwourth Sheep 5/16 to 9/30 794 15,140

English Cattle 7/1 to 9/30 599 22,234

Harding Point Cattle 5/16 to 6/15 80 4,225

Independence Cattle 7/1 to 10/15 557 7,715

Kyburz Sheep 7/1 to 7/31 224 26,507

Lincoln Valley Sheep 9/1 to 9/30 197 12,004

Nichols Canyon Cattle 6/1 to 9/15 232 11,225

Pass Creek Cattle 7/1 to 9/1 329 10,903

Payen Cattle 7/1 to 9/15 401 11,783

Perazzo Meadows Cattle 7/1 to 10/10 484 4,733

Smithneck Cattle 5/15 to 9/30 862 26,871

Beckwourth Peak None-Vacant Vacant 0 255

Bickford None-Vacant Vacant 0 4,793

Euer Valley None-Vacant Vacant 0 8,282

Haypress None-Vacant Vacant 0 14,638

Truckee Ranger District

Boca Active Sheep 1,826 46,903

Yuba Ranger District

American Hill Active Cattle 386 22,464

Canyon Creek Active Cattle 403 20,727

Gold Valley Active Cattle 301 11,741

Haskell Peak Active Cattle 154 3,228

Howard Creek Active Sheep 244 10,046

Middle Yuba Active Cattle 312 12,891

Mt Haskell - PNF Active Cattle 59 3,416

Oregon Creek Active Cattle 730 10,831

Our House Active Cattle 545 10,031

Saddleback Active Sheep 802 21,182

Webber Lake Active Sheep 998 4,379

Devils Peak Vacant None-Vacant 0 27,964

Willow Creek Vacant None-Vacant 0 20,889
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Geodatabase

The geodatatabase (gbd) location for GIS data related to all projects listed in this document is: 

T:\FS\NFS\R05\Project\OverSnow_2016\GIS\Tahoe\Data\Geodatabase\OngoingAndFutureActions

PRESENT ACTIONS

Forestwide

1. 2017 MVUM Update Project

Description: The project includes the following actions: 

1) Remove fixed seasonal closures (which currently do not allow wheeled motorized vehicles to travel 

from January 1 through March 31) for specific paved National Forest Transportation System (NFTS) 

roads as follows: 

(a) Remove fixed seasonal closures on approximately 0.9 mile of two paved NFTS roads. These 

roads would be open to public wheeled motor vehicle travel year round. 

(b) Remove fixed seasonal closure dates that currently extend from January 1 through March 31 on 

approximately 46.6 miles of four paved NFTS roads that are dually designated as snow trails. 

These four paved roads would be “open to wheeled motorized vehicle travel by the public except 

when managed as a snow trail.” 

2) Remove fixed wet weather seasonal closures from approximately 25 miles of NFTS roads and 45 miles 

of motorized trails in the Burlington area. The Forest Service would use soil moisture conditions, 

timing, and weather factors to determine when roads and motorized trails in the Burlington area would 

be closed. 

3) Close approximately 3.3 miles of NFTS road segments dead ending on private lands to public wheeled 

motor vehicle travel. 

4) Close approximately 4.6 miles of isolated, disconnected road segments on NFS lands that cannot 

currently be legally reached by public wheeled motor vehicle travel. 

The 2017 MVUM Update Project proposes several administrative and usage changes to the Tahoe 

National Forest transportation system. 

Web Link: http://www.fs.usda.gov/project/?project=48411

American River Ranger District

1. Deadwood Vegetation Management Project

Description: The project includes the following actions: (1) thin approximately 2,433 acres with groundbased equipment and conduct necessary follow-up fuels treatment; (2) thin approximately 77 acres with 

cable yarding equipment with follow-up fuels treatments; (3) pre-commercial thin approximately 

129 acres of natural stands; (4) pre-commercial thin approximately 349 acres of plantation stands; 

(5) prescribe burn approximately 613 acres (not including follow-up fuels treatments); (6) reduce surface 

and ladder fuels along 16 miles (approximately 1,000 acres) of roads and ridge-tops to create fuelbreaks; 

and (7) change the maintenance level on one National Forest Transportation System (NFTS) road; 

(8) change the season of allowed motorized vehicle use on one NFTS road; (9) add 10 short unauthorized 

route segments to the NFTS; and (10) decommission one unauthorized route. Most of these vegetation 
Draft Environmental Impact Statement – Volume II

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Tahoe National Forest

17

and fuels treatments will be conducted in plantations (2,956 acres). Approximately 654 acres of 

treatments will be conducted in natural stands. The 1,000 acres of fuelbreaks include removing only 

surface and ladder fuels (grasses, shrubs, and/or trees less than 10 inches dbh).

Web link: http://www.fs.usda.gov/project/?project=32941

2. East Fork Thinning Project

Description: The project includes the following actions: (1) thin 438 acres with ground based equipment 

followed by mechanical and/or hand fuels treatments; (2) thin 117 acres with skyline cable yarding 

equipment followed by prescribed burning; (3) mechanically thin small conifers and remove shrubs on 

694 acres of plantations and 102 acres of natural stands with mastication equipment; (4) hand thin small 

conifers and shrubs on 110 acres of plantations and 65 acres of natural stands; and (5) treat 49 acres of 

surface and ladder fuels within 50 feet of portions of the 45 Road.

3. Big Hope Fire Salvage and Restoration Project

Description: The project includes the following activities: (1) salvage harvest of fire-killed trees with 

ground based equipment (approximately 3,010 acres); (2) salvage harvest fire-killed trees with aerial 

(cable or helicopter) logging systems (approximately 435 acres); (3) falling and removing trees posing a 

safety hazard along roads and trails and at trailheads and recreation sites (approximately 125 miles/

5,520 acres); (4) site preparation, conifer tree planting, and release of planted trees in burned areas 

(approximately 7,300 acres); and (5) road repair and maintenance, as needed, for approximately 125 miles 

of existing National Forest Transportation System (NFTS) roads. 

Web Link: http://www.fs.usda.gov/project/?project=42946

4. Sunny South Insect Treatment Project

Description: The project implements approximately 2,700 acres of treatments including: thinning of at 

risk stands, mastication, prescribed burning, soil decompaction of existing non-system routes (temporarily 

used for project activities, approximately 13 acres), removal of insect affected dead and dying trees and 

reforestation on NFS lands (approximately 600 acres) with associated management requirements.

Web link: http://www.fs.usda.gov/project/?project=48304

5. Biggie Vegetation Management and Fuels Reduction Project

Description: The project includes the following actions: (1) thin approximately 1,203 acres with ground 

based equipment; (2) thin approximately 324 acres with cable yarding equipment; (3) precommercial thin 

approximately 305 acres of natural stands; (4) precommercial thin approximately 332 acres of plantation 

stands; (5) prescribe burn approximately 256 acres (not including follow-up fuels treatments in areas 

proposed for thinning); (6) implement prescribed burning follow-up fuels treatments within the thinned 

areas; (7) reduce surface and ladder fuels along 13 miles (approximately 481 acres) of roads and ridgetops to create fuelbreaks. (There are approximately 174 acres of overlap between fuelbreaks and other 

proposed vegetation treatments.); and (8) protect 11 rust-resistant sugar pines by radial thinning within 

150 to 300 feet around each sugar pine tree and reducing surface and ladder fuels within the vicinity of 

the protected sugar pine trees (64 acres).

Web link: http://www.fs.usda.gov/project/?project=37683
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6. PCWA Gate

This decision authorizes Placer County Water Agency (PCWA) to install a gate on NFS Road 96 

(Mosquito Ridge Road) at a location to the east, and within 1,000 feet of, Interbay Road (NFS Road 96-

17), past an area safe for vehicles to turn around. PCWA needs to use this road during the winter to access 

its French Meadows and Hell Hole Reservoirs. PCWA will plow the road; however, not to standards 

required for public access and safety. A gate is needed to ensure a 15-mile segment of the Mosquito Ridge 

Road is closed to wheeled motor vehicle use from January 1 through March 31 (consistent with the Tahoe 

National Forest Motor Vehicle Use Map (MVUM 2013).) The Forest Service will issue a road use permit 

to allow PCWA to plow an approximately 15-mile segment of the Mosquito Ridge Road, from east of 

Interbay Road to the intersection with NFS Road 22. Due to OSV use on NFS Road 43, a sign alerting 

OSV users of potential pavement will be placed along the shoulder of NFS Road 43 approximately 100 

yards north of its intersection with the Mosquito Ridge Road.

Additional Information: Karen Walden, Environmental Coordinator, American River Ranger District

Sierraville Ranger District

1. Phoenix Project

Description: This project includes the following actions:

• Mechanical thinning of selected trees from below on approximately 2, 675 acres. Live trees greater 

than or equal to 30 inches diameter breast height (dbh) would remain.

♦ Group selection (GS) harvest (30-inch dbh limit) on approximately 273 acres. Live trees greater 

than or equal to 30 inches dbh would remain.

♦ Aspen restoration (40-inch dbh limit) on approximately 225 acres. In general, trees marked for 

removal would be less than 30 inches dbh. Some trees greater than 30 inches would be removed 

on a case by case basis, where it is determined that their removal would significantly benefit the 

aspen restoration objective. In no case would trees greater than 40 inches be removed.

• Hand thinning and piling on approximately 996 acres.

• Mechanical thinning by mastication of brush and saplings on approximately 800 acres.

• Existing ground fuels or harvest generated fuels would be removed, masticated, piled mechanically 

or by hand, or burned in the mechanically thinned areas as needed to achieve the desired fuel 

objectives.

• Road maintenance on up to approximately 135 miles of roads.

• Road repair for watershed restoration including 4.2 miles of road decommissioning, 53.8 miles of 

road drainage improvement, and 9.8 miles of surface improvement.

• Use approximately 6.9 miles of temporary roads. Decommission these temporary roads after use.

• Reconstruct approximately 2.1 miles of existing National Forest System roads.

• Construct 2 new permanent roads totaling approximately 1.7 miles in length.

• Restrict access to 30 existing and newly constructed permanent roads with gates or earth barriers to 

reduce potential disturbance to wildlife. The total affected road miles would be approximately 47 

miles.

Additional Information: Karie Wiltshire, Environmental Coordinator, Sierraville Ranger District
Draft Environmental Impact Statement – Volume II

Appendices

Tahoe National Forest

19

2. Saddle Project

Description: The project includes the following actions: implementation of up to 4,151 acres of 

vegetation (silvicultural) management prescriptions (including hand thinning, variable thinning, radial 

thinning, group selection, meadow and aspen restoration) and up to 534 acres of prescribed burn optional 

areas. These activities will require use of up to 8.1 miles of existing, tilled roads or roadbeds. All 

temporarily-used roads will be obliterated after project implementation. Most of the Saddle Project’s 

treatments will be conducted near the community of Calpine, and will complement and complete fuels 

management needs in the Calpine Wildland Urban Interface (WUI).

Web Link: http://www.fs.usda.gov/project/?project=30935

3. Dingo Aspen Restoration, Thinning, and Group Selection Project

Description: This project includes the following actions: (1) aspen restoration on approximately 

162 acres by removing conifers (Restoration treatments may extend beyond the perimeter of an aspen 

stand up to 11⁄2 times the height of conifers.); (2) mechanical thinning from below and hand thinning on 

approximately 138 acres; and (3) group selection (GS) harvest with groups less than or equal to 2 acres in 

size, on approximately 10 acres. (Within the GS units, all live trees greater than or equal to 30 inches 

DBH would be retained, except as needed for equipment operability.) In the aspen restoration treatment 

units, when fuels treatments are determined necessary, pre-existing ground fuels will be removed, 

masticated, or piled mechanically or by hand to achieve fuel treatment objectives. In the thinning and 

group selection treatment units, some pre-existing ground fuels and/or non-merchantable vegetation on 

approximately 40 percent of those areas mechanically thinned will be removed, masticated, or piled 

mechanically or by hand to achieve fuel treatment objectives. Piles created mechanically or by hand will 

be burned. 

Other actions include the following:

• Relocate National Forest System Road 05-72 (which is currently in riparian areas in Unit 7304039) 

after project implementation. Approximately 0.5 mile of existing unauthorized roadbed and 0.7 mile 

newly constructed road would become the new National Forest System Road 05-60-15 and 0.6 mile 

of the existing route 05-72 would be obliterated. 

• Install and replace a road drainage system (culverts and French drains) along the Treasure Mountain 

Road near Unit 7304150 to restore the hydrologic connectivity of the waterflow. 

• Decommission and obliterate 1.1 miles of roads that are not part of the National Forest 

Transportation System (also known as non-system roads). This includes: 

♦ Removing a culvert and obliteration of a non-system road in Unit 7304151, and the reshape of 

the adjacent landscape and slope to restore the hydrologic connectivity. 

♦ Obliterating a non-system road, removing adjacent landing fills, and reshaping the adjacent 

landscape on routes in and around Units 7304139 and 7304163. These actions would restore the 

seasonal drainage and the hydrologic connectivity in this part of the project area. 

• Install a gate to eliminate public access at the beginning of the National Forest System Road 05-70 

to protect sensitive wildlife.

• Use approximately 2.8 miles of previously tilled temporary roads or existing roadbeds to provide 

short-term access to treatment units. Decommission the roads after project completion. Road 

decommissioning would include actions to reduce compaction as needed, dispersing water flows 
Over-snow Vehicle Use Designation

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with waterbar or drainage placement, and providing cover with mulch, slash, wood chips or weedfree straw (preferably with materials from the surrounding setting). 

• Construct approximately 0.1 mile of temporary road to provide short-term access to treatment units. 

Construct the roads to a 12-foot width with minimal cuts and fills. Decommission this road section 

after project completion. Road decommissioning would include actions to reduce compaction as 

needed, dispersing water flows with waterbar or drainage placement, and providing cover with 

mulch, slash, wood chips or weed-free straw (preferably with materials from the surrounding 

setting). 

• Use 3 temporary stream crossings during project implementation to provide short-term access to the 

treatment units. One would cross a perennial stream adjacent to National Forest System Road 89-55 

and the others would be low water crossings over seasonal-flowing streams on existing non-system 

temporarily-used roads. Crossings would be constructed and used during low flows only, and would 

be removed before the onset of winter. Post-use, crossing locations would be cleaned out, reshaped, 

and stabilized. 

• Maintain approximately 17 miles of existing National Forest System roads to provide for public and 

contractor safety, road surface protection, and erosion control. 

Additional Information: Karie Wiltshire, Environmental Coordinator, Sierraville Ranger District

4. Ox Project

Description: The proposed project includes approximately 677 acres of vegetation treatments as follows: 

(1) variable density mechanical thinning (131 acres); (2) variable density hand thinning (20 acres); 

(3) variable density mechanical thinning in plantations (484 acres); (4) variable density hand thinning in 

plantations (13 acres); and (5) hand or manual aspen enhancement (27 acres) and mechanical aspen 

enhancement (2 acres) by removing the majority of conifers less than 30 inches dbh. Pre-existing surface 

fuels, activity-generated and/or non-merchantable vegetation(less than 11inches dbh) on approximately 25

to 50 percent of silviculturally treated areas may receive a secondary phase of treatment to achieve fuel 

treatment objectives. Treatments will be completed by hand or mechanically (grapple piled or masticated 

or removal of material), or a combination of methods to achieve desired fuels objectives. Prescribed fire 

would be applied on up to approximately 25 to 50 percent of the silvicultural treatments by Forest Service 

staff.

The following watershed restoration actions are designed to improve aquatic organism passage, overland 

flows and subsurface processes to reduce legacy impacts to riparian areas:

Action W-1: (Valley Loop Road (012-055-15)): This action would replace an existing gabion 

structure crossing with an open-bottom bridge or stream simulation culvert design to facilitate fish 

passage and increase access to fish habitat. It is expected to require some road realignment within 

200 feet of the approach on each side of the crossing. A constructed channel grade control designed 

to hold the existing grade would also be implemented. Upstream and downstream elements using 

pool/cascade design features would be implemented to ensure fish passage up to the constructed 

perennial stream crossing. The downstream structures would use both rock and wood to create 

roughness and diversity for fish passage, and would be needed for approximately 250 to 500 feet 

along the channel depending on the slope and existing grade of the crossing. Similar upstream 

structures would be implemented up to 75 feet upstream of the crossing. Recontouring of the 

roadway and approach to the drainage would be completed to ensure that during a flood situation, 

water would follow the drainage way and would not divert away from the drainage. Action W-1 
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Appendices

Tahoe National Forest

21

would open access to approximately 2.0 miles of juvenile rearing habitat and spawning areas for 

adults.

Actions W-2 and W-3 (Long Valley Creek Road (012-055) Crossings A and B: These actions 

would remove the existing embedded fallen bridge structure (degraded and unusable) over two 

perennial stream crossings. This action would not replace the original bridge function. The 

reconstructed channel would be designed to match the stream channel gradient that previously 

existed prior to installation of the bridge and would incorporate fish passage design components 

including structures would use both rock and wood to create roughness and pools for fish passage. 

The downstream pool construction would be needed for approximately 150 to 250 feet depending on 

the final design slope based on upstream and downstream conditions each of the stream crossings. 

Actions W- 2 and W-3 would create access to a total of approximately 2.2 miles of juvenile rearing 

habitat and spawning areas for adults. The needed re-contouring of the remaining road bed that 

continues past the existing old bridge is described in Action W-4 below.

Action W-4 (Long Valley Creek Road (012-055-20 and 012-055-30): Currently the road which 

crosses two perennial streams (described in Actions W-2 and W-3 above) concentrates the natural 

water flow from the upland drainage above project Units Ox-7, Ox-4 and a portion of Ox-10 along 

the length of the road. Through obliterating approximately 0.7 miles (1.7 acres) of the existing road 

template that currently interrupts dispersed surface and subsurface flows, the downstream riparian 

system has the potential to-expand in vigor and improve the hydric conditions. Action W-4 would regrade the road to match the natural topographic configuration, sub-soil compacted areas, and 

reconnect drainage swales across the road to restore hydrologic connectivity and improve delivery of 

water to the downstream riparian system. Mulching and the protection of existing down wood would 

control erosion and maintain soil productivity. While it is expected that the area will naturally revegetate, seeding with native weed-free vegetation, brush forbs and grasses may be implemented as 

needed to achieve desired species composition. Action W-4 would improve hydrologic connectivity 

and restore riparian systems on approximately 10 acres.

Road and transportation system maintenance and management actions include the following:

A. The status of the following routes would be changed with this Proposed Action:

Action R-1: Under Action W-4 described in the watershed actions above, NFS routes 012-055-20 

and 012-055-30 (maintenance level 1 closed routes) would be obliterated to improve hydrologic 

connectivity and restore riparian systems. These routes would be removed from the National 

Forest Road System, removing a total of 0.437 miles from the National Forest System.

Action R-2: This route provides access to radio repeaters used by: Sierra County Sheriff, Sierra 

County Public Works, California Department of General Services, and California Department of 

Transportation (CALTRANS), but is not currently a designated NFS route. To provide for longterm access and maintenance it would be designated as NFS route 09-15-45 with an operational 

maintenance level 2 with administrative use only.

B. Use approximately 1.2 miles of previously tilled temporary roads and existing unclassified non-system 

roads to provide short-term access to plantation units. Temporary roads will be decommissioned 

including actions to reduce compaction as needed, dispersing water flows with waterbar or drainage 

placement, and where needed to maintain hydrology pull berms and reestablish topography. Final 

configuration will provide ground cover with mulch, slash, wood chips or weed-free straw (preferably 

with materials from the surrounding setting) in amounts adequate to control erosion.
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C. Maintain approximately 16.6 miles of existing National Forest System roads to provide for public and 

contractor safety, road surface protection, and erosion control.

Web Link: http://www.fs.usda.gov/project/?project=41703

Truckee Ranger District

1. Sagehen Project

Description: This project includes the following actions: (1) variable thinning (along with retention of 

small dense cover areas and creation of small openings) in natural stands using mechanical, manual, and 

prescribed fire treatments on approximately 1,660 acres; (2) thinning of plantations on approximately 

960 acres; (3) conifer removal in 6 acres of aspen stands using mechanical and manual methods; and 

(4) stabilizing and restoring approximately 1.0 mile of road to a more natural state through 

decommissioning and re-contouring the roadbed to a hydrologically neutral state. 

Web link: http://www.fs.usda.gov/project/?project=9156

2. Dry Creek Project

Description: This project includes the following actions: 

(1) Underburning will be applied across 1,120 acres, and in the form of pile burning, on 195 acres. In 

addition, mechanical and manual vegetation treatments will occur across 1,885 acres. These treatments 

combined are designed to mimic what active fire will achieve in an active fire regime. This project

reduces hazardous fuel loadings across 2,773 acres with mechanical, manual and prescribed fire 

vegetation treatments. (Note the overlap between a portion of the underburning and pile burn acreages 

with the mechanical and manual vegetation treatments.)

(2) Seven sites will be treated with restorative actions including stabilization of headcuts, elimination of 

gullies, grade control structures, decommissioning of non-system roadbeds, and minor re-routing of 

one Forest Service system road to reduce erosion and to improve/re-establish hydrologic connectivity.

(3) Approximately 22 acres of aspen stand treatments will reduce and/or eliminate conifer competition 

and will regenerate the aspen stands. Perpetuate the aspen stands over the long term.

Web Link: http://www.fs.usda.gov/project/?project=41631

3. Sugarplum Project

Description: The harvest prescription is over-the-snow salvage, sanitation, and thinning on 197 acres in 

the Sugar Bowl Ski Area. All work is planned in areas with already established ski runs and lifts. No new 

ski terrain, ski runs, ski lifts, or ski areas are developed under this project. Salvage harvest will remove all 

currently dead and dying standing trees posing a hazard to improvements and forest users. Away from 

improvements, dead and dying trees will be salvage harvested while still maintaining some snags for 

wildlife habitat (where not a high risk of insect or disease transmission). Sanitation harvest will remove 

damaged and/or diseased trees that have indicators of a weakened condition in the roots or bole of the 

tree. Adjacent trees remaining from the salvage and sanitation harvest will be thinned to minimize the risk 

of insect or disease spread and to create an environment that will enhance the health and vigor of the 

remaining trees. Thinning would occur from below, thereby retaining the tallest, best formed, damageand disease-free trees on site. 

Additional Information: Karie Wiltshire, Environmental Coordinator, Truckee Ranger District
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Tahoe National Forest

23

4. Onion Creek Project

Description: Forest thinning and sanitation treatments will be conducted on approximately 155 acres to 

establish a roadside fuelbreak along approximately 2.5 miles of road. Project is located in the wildland 

urban intermix zone near private lands at The Cedars and Serene Lakes.

Additional Information: Karie Wiltshire, Environmental Coordinator, Truckee Ranger District

5. Prosser Wildland Urban Intermix Project

Description: The Prosser WUI (wildland-urban intermix) Project will treat vegetation and improve stand 

conditions on 151 acres of NFS lands near structures located near the Prosser Lakeview Estates along 

East Alder Creek Road. Identified treatment units will be thinned and/or masticated with some material 

piled and burned. Because the majority of the Project area encompasses sensitive resources, most of the 

units will be treated with a low-pressure minimally ground disturbing “spider” masticator and with hand 

thinning under consultation with resource specialists.

Web Link: http://www.fs.usda.gov/project/?project=45345

6. North American Ski Training Center Special Use Permit Renewal

Description: Renew SUP Special Use Permit TRU670301B for guiding and instruction of rock climbing, 

winter mountaineering, back-country skiing, natural ice climbing, snowboarding, snow shoeing 

excursions, and leading of avalanche seminars.

Additional Information: Mary Westmoreland, Special Uses Permit Administrator, Truckee Ranger District

7. Tahoe Nordic Search and Rescue (TNSAR) 5-year Special Use Permit Renewal

Description: The existing Special Use Permit TRU197 for The Great Ski Race was issued to Tahoe 

Nordic Search and Rescue (TNSAR). The 5-year permit renewal would reauthorize TNSAR's use of NFS 

lands for this one-day annual ski race using NFS routes and existing staging areas.

Additional Information: Joseph Canas, Recreation Technician, Truckee Ranger District.

8. Truckee River 2016 Tributaries Project

Description: Actions include watershed remediation to increase infiltration and allow slope hydrologic 

properties to be re-established while decreasing the length of concentrated flow patterns; road obliteration 

in the Prosser Creek watershed area; and forest systems route drainage improvements.

Additional Information: Karie Wiltshire, Truckee Ranger District.

Yuba River Ranger District

1. Camp Project

Description: The project includes the following actions: (1) underburn approximately 4,472 acres; 

(2) hand thin/machine or hand pile/pile burn/underburn approximately 2,195 acres; (3) mechanically thin 

approximately 1,715 acres; (4) precommercially thin approximately 16 acres; (5) improve/create cover 

piles and log structures for wildlife habitat on approximately 135 acres; (6) cultivate hardwood sprouts 

using handcutting on approximately 474 acres; (7) hand pull non-native invasive plant species along roads 

and in treatment units; (8) re-route approximately 0.5 mile of a non-motorized trail; (9) re-route a section 

of stream channel to its original alignment by raising the ground level of the existing diverted channel 

using onsite fill material (total disturbance area not to exceed 0.1 acre); (10) maintain approximately 

34 miles of roads; (11) repair approximately 16.2 miles of roads; (12) remove hazard trees along 
Over-snow Vehicle Use Designation

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Maintenance Level 3, 4, and 5 roads and high use recreation/administrative sites within treatment units 

only; and (13) decommissioning/closing/gating approximately 15.6 miles of roads (of which 

approximately 13.7 miles are unauthorized routes).

Web Link: http://www.fs.usda.gov/project/?project=39521

2. Plum Project

Description: The project includes the following actions: (1) underburn approximately 1,242 acres, 

masticate approximately 37 acres, (2) hand thin/tractor pile/burn approximately 403 acres, 

(3) mechanically thin approximately 1,738 acres, and (4) precommercially thin approximately 44 acres. 

Because some areas will receive more than one treatment, the total treated area for all activities under this 

Project is approximately 3,050 aggregate acres. Canopy cover on mechanically thinned acres would not 

fall below 50 percent in any unit outside Wildland Urban Intermix (WUI) defense zones. Conifers that are 

over 29.9 inches dbh would not be thinned (excluding hazard trees). Additional benefits from some of the 

proposed actions listed above include treating smaller diameter materials (less than 10 inches dbh) on 

approximately 485 acres (through the hand thinning/tractor piling, mastication, and precommercial 

thinning), maintaining approximately 21 miles of roads, repairing approximately 6 miles of roads, 

improving/creating cover piles and log structures for wildlife habitat on approximately 175 acres, 

enhancing hardwoods by removing small conifers (less than 10 inches) beneath and around oaks in 

specific units, and decommissioning/closing approximately 7.23 miles of roads.

Web Link: http://www.fs.usda.gov/project/?project=32911

3. Gold Project

Description: The project includes the following actions: (1) underburn approximately 673 acres, 

(2) masticate approximately 67 acres, (3) treat (restore) approximately 22 acres of aspen, (4) hand 

thin/hand pile/burn approximately 65 acres, (5) hand thin/tractor pile/burn approximately 621 acres, 

(6) mechanically thin approximately 777 acres, (7) precommercially thin approximately 42 acres, and 

(8) plant approximately 133 acres. Canopy cover on mechanically thinned acres would not fall below 

40 percent in any unit. Conifers that are over 29.9 inches dbh would not be thinned (excluding aspen 

stands and hazard trees. Additional actions include treating smaller diameter materials (less than 10 inches 

dbh) on approximately 795 acres, aspen stand restoration on approximately 22 acres, reconstruct 

approximately 1 mile of roads, improve/create cover piles and log structures for wildlife habitat on 

approximately 240 acres, enhancement of hardwoods, removing hazardous trees along maintenance level 

3, 4, and 5 Forest Service system roads, and within or immediately adjacent to high-use recreational and 

administrative sites, and decommissioning approximately 4.8 miles of roads. These additional actions are 

funding-dependent. 

Web Link: http://www.fs.usda.gov/project/?project=28369

4. Bloody Run Sub-Watershed Improvement Project

Description: The project includes the following actions: (1) underburn approximately 1,260 acres, 

(2) mechanically thin and hand cut/hand pile/pile burn approximately 598 acres, (3) hand cut/hand pile/ 

pile burn approximately 61 acres, (4) masticate and enhance oaks on approximately 127 acres, 

(5) mechanically thin approximately 87 acres, (6) site prep/ treat weeds/plant native conifers on 

approximately 6 acres, and (7) conduct non-native invasive plant treatment (cutting or pulling target nonnative invasive plants) on approximately 7 acres. Canopy cover on mechanically thinned acres would not 

fall below 40 percent in any natural stand. Additional actions include enhancing hardwoods, protecting 

large trees, applying borate on freshly cut stumps to minimize root infections, non-native invasive plant 
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Tahoe National Forest

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removal (by pulling or cutting if plants are found within any treatment unit or within 100 feet of roads in 

the Project area), repairing approximately 2 miles of roads, replacing 2 undersized culverts, removing 

hazard trees, decommissioning/closing approximately 2.6 miles of roads.

Web Link: http://www.fs.usda.gov/project/?project=40396

5. Coleman Project

Description: The project includes the following actions: (1) underburn approximately 388 acres, 

(2) masticate approximately 387 acres, (3) treat for non-native weeds on up to approximately 539 acres, 

(4) enhance hardwoods on approximately 467 acres, (5) machine pile approximately 38 acres, (6) plant 

native conifers on approximately 42 acres, and (7) mechanically thin approximately 467 acres. Additional 

actions include protecting large trees, applying borate on freshly cut stumps to minimize root infections, 

maintaining approximately 3.35 miles of existing roads to implement project activities, and removing 

trees encroaching on, and within 10 feet of, National Forest Transportation System roads.

Web Link: http://www.fs.usda.gov/project/?project=40398

6. Western Nevada County Community Defense Project

Description: This project includes the following proposed actions: (1) underburn approximately 

2,366 acres; (2) masticate and underburn approximately 157 acres; (3) hand thin, machine pile, pile burn 

and/or underburn 152 acres; (4) hand thin, hand pile, pile burn and/or underburn 970 acres; 

(5) mechanical thin and underburn 648 acres; (6) develop 7 helispots on 7 acres; and (7) create 4 water 

developments on 4 acres. Additional actions include protecting large trees; applying borate on freshly cut 

stumps to minimize root infections; maintaining approximately 3.23 miles of existing roads; and 

constructing approximately 5.03 miles of temporary roads (whether utilizing existing road prisms, 

existing unclassified, non-system road prisms or newly constructed road prisms) to implement project 

activities. New infestations of non-native invasive plants will be managed by pulling, scattering and/or 

piling plant material for burning to prevent establishment and spread. Existing infestations will be 

controlled or eliminated by hand clipping, digging, or pulling along roadsides within specific units and on 

landings. The proposed project also includes identification and removal of hazardous trees along National 

Forest System roads.

Web Link: http://www.fs.usda.gov/project/?project=43595

REASONABLY FORESEEABLE FUTURE ACTIONS

American River Ranger District

1. French Meadows Project

Description: Project objectives are to improve forest and watershed health and resilience, to enhance 

wildlife habitat, and to reduce the risk of uncharacteristic, high-severity wildland fire as proposed in the 

French Meadows Project. The Project area is located 30 miles east of Foresthill, California on National 

Forest System (NFS) lands surrounding French Meadows Reservoir. The legal location includes portions 

of T15N, R13E, Sections 25, 26, 35, 36; T15N, R14E, Sections 1, 2, 3, 9-11, 14-17, 20-22, 24, 26-34, 36; 

and T16N, R14E, Section 34 of the Mount Diablo Base Meridian, in Placer County, California.

The following activities are proposed:

• Mechanically thin approx. 2,245 acres with ground-based equipment.
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26

• Prescribe underburn on approx. 6,122 acres (not including follow-up fuels treatments).

• Protect five rust-resistant sugar pines by radial thinning and reducing woody fuels.

• Restore meadows, cottonwood and aspen communities.

• Fall and/or remove trees posing an imminent hazard to public safety along roads, designated trails and 

recreation facilities within the project boundaries.

• Pre-commercial mechanical thin on approx. 1,646 acres and mastication thin on approx. 1,275 acres.

• Reforest approx. 102 acres.

• Release mastication on approx. 411 acres.

• Follow-up thinning with mastication, tractor pile and burn, or broadcast burn fuels treatments 

(approx. 4,225 acres overlap).

• Construct approx. 6 miles of non-motorized trails; reconstruct and maintain roads (e.g., regrading and 

replacing culverts) on approx. 20.8 miles of roads; build approx. 2.1 miles of short temporary spur 

roads and decommission; close approx. 0.9 mile of NFS roads to public wheeled motor vehicle travel 

and gate; decommission approx. 6.1 miles of road.

• Authorize installation of pressure transducers, dendrometers, and sensors for research.

Web Link: http://www.fs.fed.us/nepa/nepa_project_exp.php?project=51549

Sierraville Ranger District

1. Little Truckee Summit Parking Area Improvement Project

Description: Demand for winter parking far exceeds the capacity of the existing parking areas at Little 

Truckee Summit Parking and Trailhead Area, and the existing parking lot does not meet current user 

needs. The proposed project would construct a new lot to double the current parking capacity, repave the 

existing parking lot, realign and replace access routes, upgrade and increase restroom and snow grooming 

shed facilities, and install a warming hut. The total area affected would be approximately 11 acres, of 

which 5 acres would be temporarily affected and rehabilitated after project construction.

Web Link: http://www.fs.usda.gov/project/?project=46058

2. Randolph Wildland Urban Intermix Project 

Description: Treat approximately 206 acres in Randolph wildland urban intermix. Apply prescribed fire, 

mastication, grapple piling, mechanical and hand thinning generally with a 12-inch tree diameter limit to 

reduce fire hazard, increase fire suppression effectiveness, and improve stand structure and vigor. 

Web Link: http://www.fs.fed.us/nepa/nepa_project_exp.php?project=46578

Truckee Ranger District

1. Big Jack East Project

Description: The Big Jack East Project is designed to treat approximately 2,059 acres on National Forest 

System lands to reduce fuel loadings and create a safer, more effective fire suppression environment in 

the wildland urban intermix (WUI), and to create conditions that would improve the forest’s resiliency to 

fire, insects, disease, drought and climate change. 

To accomplish these objectives, the Forest Service is proposing to: (1) use mechanical tools to conduct 

forest thinning, grapple piling, biomass removal, and mastication on approximately 1,883 acres and 

(2) use hand tools to thin small trees on approximately 108 acres. In addition, the following treatments are 

proposed in the WUI threat zone portions of the Project area to improve forest heterogeneity and 
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Appendices

Tahoe National Forest

27

resiliency : (1) creating small openings, ranging in size from 0.1 to 1.25 acres, scattered throughout the 

treatment units (approximately 52 acres total of small openings created in the Project area); (2) thinning 

around individual desirable trees (generally larger, older trees) scattered throughout the treatment units 

(approximately 15 acres total of this treatment in the Project area); and (3) leaving small untreated areas, 

ranging in size from 0.1 - 2.25 acres, scattered throughout the treatment units to provide patches of 

continuous vertical and horizontal vegetative cover (approximately 68 acres of leave areas in the Project 

area). Residual activity fuels and some naturally occurring surface fuels would be piled by hand or 

machine in the treatment units and burned, or this material would be moved to landings for pile burning 

or biomass use. Underburning or jackpot burning is proposed for the entire Project area; however, it is 

likely that only a portion of the Project area would receive this treatment.

The Forest Service is also proposing the following changes to the National Forest Transportation System 

(NFTS): (1) removing a 0.26-mile segment of Road 06-08, which has already been obliterated and 

restored to a natural state, from the NFTS; (2) removing two short unneeded spur routes from the NFTS; 

(3) adding an existing 0.42-mile route, which provides administrative access for powerline maintenance, 

to the NFTS; and (4) adding two existing routes (totaling 0.61 mile), frequently used by the public for 

access and overlooks and for forest management purposes, to the NFTS.

Web Link: http://www.fs.fed.us/nepa/nepa_project_exp.php?project=49215

2. Squaw Valley to Alpine Meadows Base-to-Base Gondola Project

Description: The proposed action would amend the Alpine Meadows Special Use Permit (SUP) to 

authorize construction, operation and maintenance of the following proposed infrastructure and 

improvements:

• Construction of a gondola connecting the ski and base areas of Alpine Meadows and Squaw Valley.

• Installation of eight Gazex® avalanche mitigation exploders (seven on National Forest System [NFS] 

Detailed information about this project is available at the project website: http://squawalpinegondolaeis.com

Web Link: http://www.fs.fed.us/nepa/nepa_project_exp.php?project=48417

3. Tahoe Donner Cross Country Ski Area Renewal

Description: Reissue SUP TKD662401A to Tahoe Donner Association for daily grooming and use of an

18-foot wide ski corridor and placement of a temporary 12- by 12-foot weather shelter on snow skids. 

Includes two improvements to remove obstructions and widen trail in two locations.

Additional Information: Mary Westmoreland, Special Uses Permit Administrator, Truckee Ranger District

Sierraville and Truckee Ranger Districts

1. Eagle Ridge Snowmobiles, Inc. Special Use Permit Re-Authorization

Description: Re-authorize permit for snowmobile tours on Tahoe National Forest using groomed 

snowmobile trail system (160 miles), designated snowplay areas. Base facilities are located at Little 

Truckee Summit designated parking area.

Additional Information: Jeff Wiley, OHV Program Manager, Sierraville Ranger District
Over-snow Vehicle Use Designation

Tahoe National Forest

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Yuba River Ranger District

1. Yuba Project

Description: The Yuba Project includes thinning, aspen restoration, weed treatments, hazard tree 

removal, prescribed burning, habitat enhancements, and transportation system improvements on a total of 

approximately 5,660 acres. The proposed action includes the following activities:

1. Mechanical thinning, 

2. Planting native conifers in a portion of the gaps 

3. Aspen restoration (conifer removal both by hand and/or mechanical equipment), 

4. Precommercial thinning, 

5. Manual, mechanical and smothering treatments of non-native invasive plants, 

6. Removal of hazard trees along Highway 49, Gold Lake Highway and maintenance level 2-3 roads 

within the project area and removal of vegetation that could grow into or fall onto distribution 

lines, 

7. Borate compound application to freshly cut stumps, 

8. Mechanical thinning with handcutting, handpiling, and pile burning, 

9. Handcutting, handpiling, and pile burning, 

10. Underburning, 

11. Helitorch prescribed fire for wildlife habitat (shrubfield) enhancement, 

12. Decommissioning approximately 3.23 miles of unauthorized and/or unneeded roads, 

13. Recondition/reconstruct approximately 3 miles of roads, 

14. Approximately 38.8 miles of road maintenance, 

15. Replace/restore a non-functioning waterhole with a functioning one, 

16. Meadow habitat enhancement (conifer removal both by hand and/or mechanical equipment), 

17. Installation of nest boxes and creation of wildlife cover piles. 

18. Construct a new connector trail (approximately 0.75 mile) between the Haskell Peak Trail and the 

Chapman Creek Trail, 

19. Offering public Christmas tree cutting areas along designated roads. 

The table below displays proposed treatment acreages for the Yuba Project.

Treatment Total Treatment Acres 

Aspen Work – Hand Cut/Hand Pile 35 

Aspen Work – Mechanical and Hand Cut/Hand Pile 233 

Aspen Work – Mechanical and Hand Cut/Hand Pile/Pile Burn 136 

Hand Cut/Handpile/Pile Burn 242 

Meadow and Aspen Work 222 

Meadow Restoration (Hydrology) 318 

Meadow Work – Hand Cut/Hand Pile 9 
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Tahoe National Forest

29

Treatment Total Treatment Acres 

Mechanical Thin 841 

Mechanical Thin and Aspen Work 347 

Mechanical Thin and Aspen Work and Hand Cut/Hand Pile 12 

Precommercial Thin (PCT) 67 

Rx Helitorch Burn in Shrubfields 846 

Powerline Hazard Tree/Veg Removal 323 

Underburn 3,258 

Invasive Plant Treatments 75 

Water Hole Development 1 

**Totals 6,965 

**Note: Some of the units displayed have more than one type of treatment proposed on the unit acreage 

shown (i.e., Thinning / Mastication). The total treated area for all activities under this proposed action is 

approximately 5,660 aggregate acres.

Web Link: http://www.fs.usda.gov/project/?project=47786

2. Deer Meadow Restoration Project

Description: Deer Meadow would have watershed restoration work conducted in fall 2018 or summer 

2019. The restoration work would primarily be in the upper (eastern) half of the meadow would 

encompass approximately 15 acres. This project proposal falls within a categorically excluded action.

Additional Information: Luke Rutten, Hydrologist, Yuba River Ranger District

3. Yuba Trails Enhancement Project

Description: Re-route 4 existing motorized trails (Rattlesnake/Downie River, Lavezzola, Pauley Creek, 

and Big Boulder Trails). Construct a 0.15-mile connector motorized trail. Decommission and restore three

unauthorized routes (Sisson Mine, Hawley Mdw, and Butcher Ranch)

Web Link: http://www.fs.fed.us/nepa/nepa_project_exp.php?project=52991

4. Beartrap Meadow Restoration Project

Description:Meadow restoration through gully filling and channel stabilization. Road repair and 

realignment work proposed as well. This project proposal falls within a categorically excluded action.

Additional Information: Luke Rutten, Hydrologist, Yuba River Ranger District

5. Black Jack Fen Hydrologic Rehabilitation Project

Description: Repair and restore fen hydrologic function by backfilling headcuts, removing conifers, 

and/or altering surface water flow using fallen trees. This project proposal falls within a categorically 

excluded action.

Additional Information: Luke Rutten, Hydrologist, Yuba River Ranger District

Draft Environmental Impact Statement – Volume II

Appendices

Tahoe National Forest

31

Appendix D. Water Quality Best Management Practices

BMP 2-25 (USFS R5 FSH 2509.22 - soil and water conservation handbook, 2011): Snow Removal 

Controls to Avoid Resource Damage 

a. Objective: To minimize the impact of snowmelt runoff on road surfaces and embankments 

and to consequently reduce the probability of sediment production resulting from snow 

removal operations. 

b. Explanation: This is a preventative measure used to protect resources and indirectly to protect 

water quality. Forest roads are sometimes used throughout winter for a variety of reasons. For 

such roads the following measures are employed to meet the objectives of this practice.

1. The contractor will be responsible for snow removal in a manner which will protect roads 

and adjacent resources.

2. Rocking or other special surfacing and drainage measures will be necessary before the 

operator is allowed to use the roads.

3. Snow berms will be removed where they result in an accumulation or concentration of 

snowmelt runoff on the road and erosive fill slopes.

4. Snow berms will be installed where such placement will preclude concentration of 

snowmelt runoff and serve to rapidly dissipate melt water. If the road surface is damaged 

during snow removal, the purchaser or contractor will be required to replace lost surface 

material with similar quality of material and repair structures damaged in snow removal 

operations as soon as practical unless otherwise agreed to in writing.

c. Implementation: Project location and detailed mitigation will be developed by the IDT 

[interdisciplinary team] during environmental analysis and incorporated into the project plan 

and/or contracts. Project crew leaders and supervisors will be responsible for implementing

force account projects to construction specifications and project criteria.

National Core BMP Rec-7. Over-snow Vehicle Use

Reference: FSM 7718

Objective: Avoid, minimize or mitigate adverse effects to soil, water quality and riparian resources from 

over-snow vehicle use. 

Explanation: An over-snow vehicle is a motor vehicle that is designed for use over snow and that runs on 

a track or tracks and/or a ski or skis, while in use over snow. Over-snow vehicles include snowmobiles, 

snowcats, and snow grooming machines. Snowmobiles and snowcats are used for access and for 

recreational activities. Snow grooming machines are used to prepare snow on trails for downhill or crosscountry skiing or snowmobile use. 

An over-snow vehicle traveling over snow results in different impacts to soil and water resources than 

motor vehicles traveling over the ground. Unlike other motor vehicles traveling cross-country, over-snow 

vehicles generally do not create a permanent trail or have direct impact on soil and ground vegetation

when snow depths are sufficient to protect the ground surface. Emissions from over-snow vehicles, 

particularly two-stroke engines on snowmobiles, release pollutants like ammonium, sulfate, benzene, 

polycyclic aromatic hydrocarbons, and other toxic compounds that are stored in the snowpack. During 

spring snowmelt runoff, these accumulated pollutants are released and may be delivered to surrounding 

waterbodies. In addition, over-snow vehicles that fall through thin ice can pollute waterbodies. 
Over-snow Vehicle Use Designation

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32

Use of NFS lands and/or trails by over-snow vehicles may be allowed, restricted or prohibited at the 

discretion of the local line officer. 

Practices:

Develop site-specific BMP prescriptions for the following practices, as appropriate or when required, 

using state BMPs, Forest Service regional guidance, Forest or Grassland Plan direction, BMP monitoring 

information and professional judgment:

• Use suitable public relations and information tools, and enforcement measures to encourage the 

public to conduct cross-country over-snow vehicle use and on trails in a manner that will avoid, 

minimize or mitigate adverse effects to soil, water quality and riparian resources.

♦ Provide information on the hazards of running over-snow vehicles on thin ice.

♦ Provide information on effects of over-snow vehicle emissions on air quality and water quality. 

• Use applicable practices of BMP Rec-4 (Motorized and Nonmotorized Trails) when locating, 

designing, constructing and maintaining trails for over-snow vehicle use.

• Allow over-snow vehicle use cross-country or on trails when snow depths are sufficient to protect 

the underlying vegetative cover and soil or trail surface.

• Specify the minimum snow depth for each type or class of over-snow vehicle to protect underlying 

resources as part of any restrictions or prohibitions on over-snow use.

• Specify season-of-use to be at times when the snowpack is expected to be of suitable depth.

• Specify over-snow vehicle class suitable for the expected snowpack and terrain or trail conditions.

• Use closure orders to mitigate effects when adverse effects to soil, water quality or riparian 

resources are occurring.

• Use applicable practices of BMP Rec-2 (Developed Recreation Sites) when constructing and 

operating over-snow vehicle trailheads, parking and staging areas. 

• Use suitable measures to trap and treat pollutants from over-snow vehicle emissions in snowmelt 

runoff or locate the staging area at a sufficient distance from nearby waterbodies to provide 

adequate pollutant filtering.
Draft Environmental Impact Statement – Volume II

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33

Road-10. Equipment Refueling and Servicing

FSM 2160 and FSH 7109.19, chapter 40.

Avoid or minimize adverse effects to soil, water quality, and riparian resources from fuels, lubricants,

cleaners, and other harmful materials discharging into nearby surface waters or infiltrating through soils 

to contaminate groundwater resources during equipment refueling and servicing activities. Many 

activities require the use and maintenance of petroleum-powered equipment in the field. For example, 

mechanical vegetation management activities may employ equipment that uses or contains gasoline, 

diesel, oil, grease, hydraulic fluids, antifreeze, coolants, cleaning agents, and pesticides. These petroleum 

and chemical products may pose a risk to contaminating soils, surface water, and groundwaters during 

refueling and servicing the equipment. BMP Fac-6 (Hazardous Materials) provides additional guidance 

for handling hazardous materials.

• Develop site-specific BMP prescriptions for the following practices, as appropriate or when

required, using State BMPs, Forest Service regional guidance, land management plan direction,

BMP monitoring information, and professional judgment.

• Plan for suitable equipment refueling and servicing sites during project design.

• Allow temporary refueling and servicing only at approved locations, located well away from the 

AMZ, groundwater recharge areas, and waterbodies.

• Develop or use existing fuel and chemical management plans (e.g., Spill Prevention Control and 

Countermeasures [SPCC], spill response plan, and emergency response plan) when developing the 

management prescription for refueling and servicing sites.

• Locate, design, construct, and maintain petroleum and chemical delivery and storage facilities

consistent with applicable local, State, and Federal regulations.

• Use suitable measures around vehicle service, storage and refueling areas, chemical storage and use 

areas, and waste dumps to fully contain spills and avoid or minimize soil contamination and

seepage to groundwater.

• Provide training for all agency personnel handling fuels and chemicals in their proper use, handling,

storage, and disposal.

• Ensure that contractors and permit holders provide documentation of proper training in handling 

hazardous materials.

• Use suitable measures to avoid spilling fuels, lubricants, cleaners, and other chemicals during

handling and transporting.

• Prohibit excess chemicals or wastes from being stored or accumulated in the project area.

• Remove service residues, used oil, and other hazardous or undesirable materials from NFS land and 

properly dispose them as needed during and after completion of the project.

• Clean up and dispose of spilled materials according to specified requirements in the appropriate

guiding document.

• Report spills and initiate suitable cleanup action in accordance with applicable State and Federal

laws, rules, and regulations.

• Remove contaminated soil and other material from NFS lands and dispose of this material in a 

manner consistent with controlling regulations.

• Prepare and implement a certified SPCC Plan for each facility, including mobile and portable

facilities, as required by Federal regulations.
Over-snow Vehicle Use Designation

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• Use applicable practices of BMP Fac-10 (Facility Site Reclamation) to reclaim equipment refueling

and services site when the need for them ends.
Draft Environment Impact Statement – Volume II

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Appendix E. Mitigations to Address the Minimization Criteria in the Travel Regulations for 

Areas Designated for OSV Use

Barker Area

This 9,847-acre area lies directly south of the Granite Chief Wilderness at the southern end of the Tahoe National Forest, bordered by the Lake 

Tahoe Basin Management Unit (LTBMU) and the Eldorado National Forest. No designated OSV trails are located within this area. This area 

is used as a “bridge” by OSV recreationists staging at Blackwood Canyon (LTBMU) and snowmobiling west over the Sierra crest to the 

Eldorado National Forest. The Pacific Crest National Scenic Trail bisects the Barker Area.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected 

by allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to soils and vegetation, which will 

protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (e.g. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants and 

soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will 

be protected by allowing OSV use to occur 

only when there is adequate snow depth to 

prevent damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in 

meadows when snow depths are inadequate 

for resource protection.

Does the trail or area drain into 

a 303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

36

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage to soil 

and water quality.

(continued)

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A 

Does the trail or area include 

designated botanical areas 

(SIA, RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, there is one northern goshawk PAC in the 

Barker area. 

Generally, goshawks initiate breeding in 

February or March. OSV use during the goshawk 

breeding season has the potential to disrupt 

nesting activities. 

SNFPA ROD S&G 82 (pg. 61): Mitigate 

impacts where there is documented 

evidence of disturbance to the nest site from 

existing recreation, off highway vehicle 

route, trail, and road uses (including road 

maintenance). Evaluate developments for 

their potential to disturb nest site.

If there is documented evidence of 

disturbance to nest site, implement a 

breeding season limited operating period 

from February 15 through September 15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. Federally endangered Sierra Nevada 

yellow-legged frog (SNYLF) suitable habitat and

designated critical habitat are located in the 

Barker area.

SNYLF suitable and critical habitat in the 

Barker Area would be protected by only 

allowing OSV use to occur when there is 

adequate snow depth to prevent damage to 

aquatic habitats including, soil, water and 

riparian vegetation. 
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

37

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats. (continued)

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, there is low to moderately high quality 

wolverine denning habitat in the Barker Area 

where late spring deep snow persistence ranges 

from 0 to 5 out of 7 years. About 50% of the 

Barker area provides moderately high quality 

denning habitat. No verified wolverine detections 

are known from the Barker area.

Suitable habitat for marten occurs in the Barker 

Area, but no detections are known.

OSV use has the potential to adversely affect 

subnivean habitat used by wolverine and its prey 

species, such as small mammals. OSV use can 

result in snow compaction and loss of subnivean 

habitat particularly when snow depth is low or 

inadequate. 

• OSV use is allowed only when there is 

adequate snow depth to prevent 

disruption to subnivean habitat important 

to prey species for the marten, wolverine 

or other sensitive forest carnivores.

• Wolverine Detections (SNFPA ROD S&G 

32, pg. 54): When verified (wolverine) 

sightings occur, conduct an analysis to 

determine if activities within 5 miles of a 

detection have a potential to affect the 

species. If necessary, apply a limited 

operating period from January 1 to June 

30 to avoid adverse impacts to potential 

breeding. Evaluate activities for a 2-year 

period for detections not associated with 

a den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, Wilderness, 

Wild & Scenic Rivers, ski areas 

(cross-country, downhill)?

Yes. There is a potential for conflicts between 

motorized and non-motorized winter 

recreationists near the Granite Chief Wilderness 

and the Pacific Crest Trail.

Motorized use is not permitted in Granite 

Chief Wilderness, nor on the PCT. Signing, 

winter patrolling, and education would be 

used to mitigate OSV incursions into these 

areas. Over Snow Vehicle Use map would 

clearly show the Granite Chief Wilderness 

Area, 

“Winter use (cross-country skiing and 

snowshoeing) [on the PCT] should be 

accommodated where practical and 

feasible” (USDA Forest Service 1982).Three 

designated OSV crossing locations of the 
Over-snow Vehicle Use Designation

Tahoe National Forest

38

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands.

(continued)

PCT are proposed in the Barker OSV Area. 

The PCT segment in this Area is a long 

distance from winter trailhead parking and 

access, resulting in little winter nonmotorized recreational use along this 

segment of the PCT.

Conflicts between motor 

vehicle use and existing 

or proposed 

recreational uses of 

Does the area abut a 

wilderness area or National 

Park managed by other 

agencies?

No (Granite Chief Wilderness managed by 

Tahoe National Forest).

N/A

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different classes 

of motor vehicle uses of 

NFS lands. 

Does this area allow wheeled 

motor vehicle use over snow? If

so, does this affect safety and 

winter management of this 

area?

No N/A

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings 

allowed by OSVs?

No N/A

Minimize conflicts 

among different classes 

of motor vehicle uses of 

other neighboring 

Federal lands.

Does this area receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow vehicles (timber 

sleds, ATVs, UTVs, 4x4s, snow tractors) has 

been low in this area, but is expected to increase 

overtime as their popularity increases.

OSVs wider than 50 inches would not be 

allowed off the designated snow trail 

system. Because the Barker area has no 

designated OSV trails, OSVs wider than 

50 inches could not be used in this area.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

39

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

40

Black Buttes Area

This approximately 41,252-acre area is located south of Henness Pass Road north of Highway 20 and Interstate 80. It includes the Grouse 

Ridge area and has numerous private inholdings along Interstate 80 and in the Henness Pass Road area. The area is mostly higher than 

4,500 feet with roads and terrain suitable for over-snow vehicle use. This area includes the Rattlesnake and Sterling OSV Trails.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, 

what measures will be taken to 

manage OSV use to minimize these 

effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected 

by allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to soils and vegetation, which will 

protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (e.g., during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants and 

soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will 

be protected by allowing OSV use to occur 

only when there is adequate snow depth to 

prevent damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in 

meadows when snow depths are inadequate 

for resource protection.

Does the trail or area drain into 

a 303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

41

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, 

what measures will be taken to 

manage OSV use to minimize these 

effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use?

Yes. Three species of sensitive plants 

occurrences are known from the Black Butte 

area: Erigeron miser, Bruchia bolanderi, and 

Phacelia stebbinsii.

Sensitive plant occurrences within the 

Black Butte area will be protected by 

allowing OSV use to occur only when there 

is adequate snow depth to prevent damage 

to plants and prevent soil compaction.

Would the trail or area include 

designated botanical areas 

(SIA, RNA)?

No.

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, there are seven California spotted owl and 

five northern goshawk PACs in the Black Butte 

area. 

Generally, goshawks and spotted owls initiate 

breeding in February and March, respectively. 

OSV use during breeding season initiation has 

the potential to disturb nesting owls and 

goshawks and could potentially disrupt nesting 

activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate 

impacts where there is documented 

evidence of disturbance to the nest site from 

existing recreation, off highway vehicle 

route, trail, and road uses (including road 

maintenance). Evaluate developments for 

their potential to disturb nest site.

Implement a breeding season limited 

operating period if there is documented 

evidence of disturbance to nest site(s) from 

the above as follows: California spotted owl 

– March 1 through August 15 and northern

goshawk – February 15 through September 

15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

Yes, however, the bald eagle nest sites are 

located on private land and would not be 

impacted by proposed OSV use. 

N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

42

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, 

what measures will be taken to 

manage OSV use to minimize these 

effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. Federally endangered Sierra Nevada 

yellow-legged frog (SNYLF) occupied sites, 

suitable habitat and designated critical habitat 

are located in the Black Butte area.

SNYLF occupied habitat, suitable habitat, 

and critical habitat in the Black Buttes area 

would be protected by only allowing OSV 

use to occur when there is adequate snow 

depth to prevent damage to aquatic habitats 

including, soil, water and riparian vegetation.

There are numerous western pond turtle 

locations in the Black Butte area. 

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs during when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes. 

Marten detections and suitable habitat occurs in 

the Black Butte area.

There are verified wolverine detections from the 

Black Butte area. 

OSV use has the potential to directly disrupt 

wolverine behavior and can indirectly affect 

subnivean habitat used by marten and wolverine 

and their prey species, such as small mammals. 

OSV use can result in snow compaction and loss 

of subnivean habitat particularly when snow 

depth is low or inadequate. 

• OSV use is allowed only when there is 

adequate snow depth to prevent 

disruption to subnivean habitat important 

to prey species for the marten, wolverine 

or other sensitive forest carnivores.

• Marten Den Sites (SNFPA ROD - S&G 

89, pg. 62). Mitigate impacts where there 

is documented evidence of disturbance 

to the den site from existing recreation, 

off-highway vehicle route, trail, and road 

uses (including road maintenance). 

Evaluate proposals for new roads, trails, 

off highway vehicle routes, and 

recreation and other developments for 

their potential to disturb den sites.

• Wolverine Detections (SNFPA ROD S&G 

32, pg. 54): When verified (wolverine) 

sightings occur, conduct an analysis to 

determine if activities within 5 miles of a 
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

43

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, 

what measures will be taken to 

manage OSV use to minimize these 

effects?

Minimize significant 

disruption of wildlife 

habitats. (continued)

detection have a potential to affect the 

species. If necessary, apply a limited 

operating period from January 1 to June 

30 to avoid adverse impacts to pot4ential 

breeding. Evaluate activities for a 2-year 

period for detections not associated with 

a den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, Wilderness, 

Wild & Scenic Rivers, ski areas 

(cross-country, downhill), and/or 

IRAs?

No. The Grouse non-motorized area is included 

in this area. However, the Grouse non-motorized 

area allows for OSV use in the winter (LRMP, pg. 

V-248).

The Black Buttes Area encompasses the entire 

Grouse Lakes IRA and a portion of the Middle 

Yuba IRA. Noise from OSV use could adversely

impact opportunities for solitude and quiet 

recreation in these IRAs. However, these areas 

are sufficiently far from the trailhead that it 

receives limited or little non-motorized use during 

the winter.

Wheeled vehicles are allowed on the first 5 miles 

of the Fordyce Jeep Trail in winter when there is 

at least 15 inches of snow depth present. 

However, non-motorized use is minimal in the 

southern portion of this area near Indian Springs. 

The District will monitor for conflict.

Conflicts between motor 

vehicle use and existing 

or proposed 

recreational uses of 

Does the area abut a 

wilderness area or National 

Park managed by other 

agencies?

No N/A

neighboring Federal 

lands.

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

44

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, 

what measures will be taken to 

manage OSV use to minimize these 

effects?

Conflicts between motor 

vehicle use and existing 

or proposed 

recreational uses of

neighboring Federal 

lands. (continued)

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different classes 

of motor vehicle uses of 

NFS lands. 

Does this area allow wheeled 

motor vehicle use over snow? If

so, does this affect safety and 

winter management of this 

area?

Yes. The first 4.8 miles of the Fordyce Jeep Trail 

allows wheeled over snow travel when there is at 

least 15 inches of snow.

Wheeled over-snow use is common on the 

Fordyce Jeep Trail because it is one of the 

few places open to this type of use. Snow 

mobile use on this trail is rare. 

Minimize conflicts 

among different classes 

of motor vehicle uses of 

NFS lands.(continued)

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings 

allowed by OSVs?

No. The area abuts Interstate 80, which is 

plowed. However, OSV crossings are not 

allowed.

N/A

Minimize conflicts 

among different classes 

of motor vehicle uses of 

other neighboring 

Federal lands.

Does this area receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow vehicles over 

50 inches wide is not common, but is expected to 

increase over time.

OSVs wider than 50 inches would not be 

allowed off the designated OSV trail system. 

Experience has shown that there is 

adequate space for all users on the OSV 

trail system. 
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

45

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, 

what measures will be taken to 

manage OSV use to minimize these 

effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

No.

The areas includes the Big Bend, Jackson 

Creek, and Prairie Creek recreation residence 

tracts. A few recreation resident cabin owners at 

Prairie Creek and Jackson Creek use OSVs to 

access their cabins during the winter months. 

OSV use is compatible with the characteristics of 

these recreation residence tracts.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

46

Bowman Area

This approximately 19,604-acre area is located the north of Highway 20, east of the town of Washington and west of the Grouse Ridge area.

This area includes numerous private inholdings. This area is mostly over 4,500 feet with roads and terrain suitable to over-snow vehicle use 

and includes the Bowman OSV trail.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil 

during the times OSV use 

could occur? Is there 

potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can cause 

rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the Fish and Wildlife Service National 

Wetlands Inventory. This area also contains 

sensitive riparian areas. If OSV use occurs when 

snow depth and density are inadequate (i.e. during 

the shoulder seasons), OSV use can result in 

compaction of snow, crushing and loss of 

meadow/riparian plants and soil, hence, potentially 

causing damage and degradation to sensitive 

meadow/riparian areas. 

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows when 

snow depths are inadequate for resource 

protection.

Does the trail or area drain 

into a 303(d)-listed 

waterbody?

No N/A

Does the area have a 

hydraulic mine site or sites?

Yes. The soils on hydraulic mine sites are often 

contaminated with mercury. Mercury attaches to soil 

particles and can be carried into nearby water 

bodies during rainstorms and snowmelt runoff.

Many of the hydraulic mine sites have dense brush 

which discourage OSV use. Adequate snow depth 

would minimize mercury contaminated sediment 

from being transported to nearby waterbodies.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

47

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

soil and water quality

(continued).

Could OSV use affect a 

municipal water system 

comprised of a small 

reservoir that goes directly 

into a local community water 

supply?

No N/A

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to 

occur in or around the trail or 

area under consideration that 

could potentially be affected 

by OSV use? 

If OSV use occurs when 

snow levels are low (i.e. 

during the shoulder seasons), 

OSV use can result in 

compaction of snow, crushing 

of Sensitive plants and soil, 

potentially causing direct 

mortality and/or loss of vigor 

and productivity.

Yes. Sensitive and Watchlist plant occurrences 

known from the Bowman area are: Erigeron miser

and Meesia triquetra (Sensitive plants) and 

Darlingtonia californica, Stellaria obtusa, Silene 

occidentalis ssp. Occidentalis (Watchlist plants).

Sensitive and Watchlist plant occurrences within 

the Bowman area will be protected by allowing 

OSV use to occur only when there is adequate 

snow depth to prevent damage to plants and 

prevent soil compaction.

Would the trail or area include 

designated botanical areas 

(SIA, RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest 

sites?

Yes, there are 10 California spotted owl and 7 

northern goshawk PACs in the Bowman area.

Generally, goshawks and spotted owls initiate 

breeding in February and March, respectively. OSV 

use during breeding season initiation has the 

potential to disturb nesting owls and goshawks and 

could potentially disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and road 

uses (including road maintenance). Evaluate 

developments for their potential to disturb nest site.

Implement a breeding season limited operating 

period if there is documented evidence of 

disturbance to nest site from the above as follows:

California spotted owl – March 1 through August 15 

and northern goshawk – February 15 through 

September 15.
Over-snow Vehicle Use Designation

Tahoe National Forest

48

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Does the trail or area 

encompass sandhill crane 

nest sites?

No. N/A

Minimize harassment 

of wildlife.(continued)

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. Federally endangered Sierra Nevada yellowlegged frog (SNYLF) suitable habitat and 

designated critical habitat are located in the 

Bowman area.

OSV use has the potential to disrupt and/or degrade 

aquatic habitat by damaging streambanks and 

causing sedimentation if use occurs when snow 

depth and density are inadequate as evidenced by 

exposed soil and open waterways. OSV use in 

areas with exposed soil can lead to reduced water 

quality from soil erosion and sedimentation.

SNYLF occupied habitat, suitable habitat, and 

critical habitat in the Black Buttes area would be 

protected by only allowing OSV use to occur when 

there is adequate snow depth to prevent damage 

to aquatic habitats including, soil, water and 

riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, 

or other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, 

Wilderness, Wild & Scenic 

Rivers, ski areas (crosscountry, downhill), and/or 

IRAs?

No. This area abuts the Grouse non-motorized 

area, however the Grouse non-motorized area is 

designated for motorized over snow use in the 

winter (LRMP, pg. V-248). The Grouse Ridge NonMotorized Area is sufficiently far from the trailhead 

that it receives little non-motorized use during the 

winter.

A segment of the South Yuba Recommended Wild 

and Scenic River traverses the Bowman Area.

The South Yuba Recommended Wild and Scenic 

River segment in the Bowman Area is not 

designated for OSV use under the proposed action.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

49

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of 

Does the area abut a 

wilderness area or National 

Park managed by other 

agencies?

No N/A

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other 

Federal lands?

No. N/A

Does the area abut a 

developed recreation site on 

neighboring Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? 

If so, does this affect safety 

and winter management of 

this area?

No. N/A

Does this area cross or 

contain plowed roads 

allowing vehicle use? Are 

road crossings allowed by 

OSVs?

Yes. On its southern boundary State Highway 20 is 

plowed.

There are no designated OSV crossings on State 

Highway 20.

N/A

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands. (Fast –

snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this area receive use by 

both tracked over-snow 

vehicles under 50 inches 

wide and over 50 inches 

wide? Is this potentially 

creating conflicts?

Yes. Use by tracked over-snow vehicles over 

50 inches wide is not common, but is expected to 

increase over time.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users. 
Over-snow Vehicle Use Designation

Tahoe National Forest

50

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

51

Donner Summit Area

This approximately 11,634-acre area lies directly north of Interstate 80 at Donner Summit. The Area encompasses the popular non-motorized 

areas of Castle Valley and Round Valley (which are not designated for cross-country OSV use, LRMP, pg. V-262), and the Peter Grubb Hut. 

The Donner Summit Area contains higher elevations of the Tahoe National Forest with good winter access and greater snow accumulations. 

The Pacific Crest National Scenic Trail bisects the Donner Summit Area.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water 

quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with OSV 

use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (e.g. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants and 

soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows when 

snow depths are inadequate for resource 

protection.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a 

small reservoir that goes directly 

into a local community water 

supply?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

52

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could 

potentially be affected by OSV 

use? 

Yes, four species of Sensitive plants occur in the 

Donner Summit area: Donner Pass buckwheat, 

starved daisy, Bolander’s bruchia moss, and 

Truckee lewisia.

If OSV use occurs when snow depth and density 

are inadequate (e.g., during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Sensitive plants, potentially 

causing direct mortality and/or loss of vigor and 

productivity. 

Sensitive plants within the Donner Summit area will 

be protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to plants and prevent soil compaction.

Does the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize 

harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, there is a northern goshawk PAC in the 

Donner Summit Area.

Generally, goshawks initiate breeding in February 

or March. OSV use during the goshawk breeding 

season has the potential to disrupt nesting 

activities.

SNFPA ROD S&G 82 (pg. 61) would apply to

goshawk PACs where OSV use is allowed: Mitigate 

impacts where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and road 

uses (including road maintenance). Evaluate 

developments for their potential to disturb nest site.

If there is documented evidence of disturbance to 

nest site, implement a breeding season limited 

operating period from February 15 through 

September 15. 

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A

Does the trail or area contain key 

deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

53

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes, there is one historic Sierra Nevada yellowlegged frog (SNYLF) detection and SNYLF 

suitable habitat within the Donner Summit area. 

The Donner Summit area falls almost entirely 

within SNYLF designated critical habitat.

OSV use has the potential to disrupt and/or 

degrade SNYLF and habitat from habitat 

alteration, including increased sedimentation if 

use occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

Suitable and designated critical SNYLF habitat 

would be protected by only allowing OSV use to 

occur when there is adequate snow depth to 

prevent damage to aquatic habitats including, soil, 

water and riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

Yes, there is a known wolverine detection in the 

Donner Summit Area.

OSV use has the potential to adversely affect 

subnivean habitat used by wolverine and its prey 

species, such as small mammals. OSV use can 

result in snow compaction and loss of subnivean 

habitat particularly when snow depth is low or 

inadequate.

OSV use is allowed only when there is adequate 

snow depth to prevent disruption to subnivean 

habitat that is important to prey species for the 

wolverine. 

SNFPA ROD S&G 32 (pg. 54): When verified 

(wolverine) sightings occur, conduct an analysis to 

determine if activities within 5 miles of the detection 

have a potential to affect the species. If necessary, 

apply a limited operating period from January 1 to 

June 30 to avoid adverse impacts to potential 

breeding. Evaluate activities for a 2-year period for 

detections not associated with a den site. 

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor 

vehicle use and 

existing or proposed 

recreational uses of 

NFS lands 

Would OSV use of this area cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill), and/or IRAs?

Yes. There is a potential for conflicts between 

motorized and non-motorized winter 

recreationists near Castle Valley, Round Valley, 

and the Pacific Crest Trail. The winter trailhead at 

Donner Summit on Interstate 80 is the most 

popular way to access the PCT going either north 

or south in the wintertime.

Signing, field map displays at trailhead; winter 

patrolling by the Forest Service and North Tahoe 

Backcountry Ski Patrol volunteers; education.

“Winter use (cross-country skiing and 

snowshoeing) [on the PCT] should be 

accommodated where practical and feasible”

(USDA Forest Service 1982). No designated OSV 

crossings of the PCT are proposed in the Donner 

Summit Area. Areas adjacent to the PCT where 
Over-snow Vehicle Use Designation

Tahoe National Forest

54

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

The Castle Peak IRA is located within the Donner 

Summit Area. Noise from OSV use could 

adversely impact opportunities for solitude and 

quiet recreation in this IRA.

noise conflicts have been an issue would not be 

designated for OSV use. Areas not designated for 

OSV use extend north in this Area (and south in 

the Summit West Area) along the PCT from the 

Donner Summit Winter Trailhead at Interstate 80 to 

accommodate the distances non-motorized winter 

recreationists would generally travel on a day-trip 

from the Interstate 80 Trailhead.

The Castle Valley and Round Valley areas, which 

are popular for winter non-motorized recreation, 

are not designated for OSV use under the 

proposed action. 

Conflicts between 

motor vehicle use 

and existing or 

Does the area abut a wilderness 

area or National Park managed by 

other agencies?

No. N/A

proposed 

recreational uses of 

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? If

so, does this affect safety and 

winter management of this area?

No N/A

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands.

Does this area receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 50 

inches wide? Is this potentially 

creating conflicts?

Yes. Use by tracked over-snow vehicles (timber 

sleds, ATVs, UTVs, 4x4s, snow tractors) has 

been low-medium in this area, but is expected to 

increase overtime as their popularity increases.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users on the OSV trail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

55

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider 

compatibility of 

motor vehicle use 

with existing 

conditions in 

populated areas, 

taking into account 

sound, emissions, 

and other factors.

Is the area adjacent to 

neighborhoods and communities? 

Is the area adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail or 

area compatible with distinct 

characteristics of the community?

No.

No.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

56

Foresthill East Area

This approximately 90,992-acre area is located south of the North Fork American Wild and Scenic River. The Area borders the Foresthill 

West Area on its western boundary, Granite Chief Wilderness on its eastern boundary, and the El Dorado National Forest on its southern 

boundary. Most of the Area is over 4,500 feet and receives substantial OSV use. This Area encompasses all the designated OSV trails 

available for grooming on the American River Ranger District.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil 

during the times OSV use 

could occur? Is there 

potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and coverage can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails as 

well as soil disturbance to streambanks at 

crossings and in areas without adequate snow 

depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils and 

vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (i.e. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants and 

soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage to 

soils and vegetation.

Include public education/information on the OSVUM 

to discourage OSV use in meadows when snow 

depths are inadequate for resource protection.

Does the trail or area drain 

into a 303(d)-listed 

waterbody?

No N/A

Does the area have a 

hydraulic mine site or sites?

Yes. The soils on hydraulic mine sites are often 

contaminated with mercury. Mercury attaches to 

soil particles and can be carried into nearby water 

bodies during rainstorms and snowmelt runoff.

Many of the hydraulic mine sites have dense brush 

which discourages OSV use. Adequate snow cover 

would minimize mercury contaminated sediment from 

being transported to nearby waterbodies.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

57

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

soil and water quality.

(continued)

Could OSV use affect a 

municipal water system 

comprised of a small 

reservoir that goes directly 

into a local community water 

supply?

No N/A

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to 

occur in or around the trail or 

area under consideration that 

could potentially be affected 

by OSV use?

Yes. There are numerous occurrences of 

Sensitive and Watchlist plants in the Foresthill 

East area: 

Sensitive plants – Erigeron miser, Poa sierrae, 

Lewisia kelloggii ssp. hutchisonii, Lewisia serrata, 

Pinus albicaulis, Phacelia stebbinsii

Watchlist plants – Allium sanbornii var. congdonii, 

A. sanbornii var. sanbornii, Arctostaphylos 

mewukka ssp. truei, Erigeron petrophilus var. 

sierrensis, Meesia triquetra, Piperia colemanii, 

Pseudostellaria sierra, Stellaria obtusa

Sensitive and Watchlist plants occurrences within 

the Foresthill East area will be protected by allowing 

OSV use to occur only when there is adequate 

snow depth to prevent damage to plants and 

prevent soil compaction.

Would the trail or area include 

designated botanical areas 

(SIA, RNA)?

Yes, two special interest areas (SIAs) are located 

in the Foresthill East Area: Placer County Big 

Tree Grove Botanical Area and Grouse Falls 

Scenic Area. 

The Forest Plan does not designate these SIAs for 

OSV use (LRMP, pp. V-523 and V-535). 

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest 

sites?

Yes, there are 18 northern goshawk PACs and 34 

California spotted owl PACs in the Foresthill East 

area. 

Generally, goshawks and spotted owls initiate 

breeding in February and March, respectively. 

OSV use during the breeding season has the 

potential to disturb nesting owls and goshawks 

and could potentially disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of disturbance 

to the nest site from existing recreation, off highway 

vehicle route, trail, and road uses (including road 

maintenance). Evaluate developments for their 

potential to disturb nest site.

Implement a breeding season limited operating 

period if there is documented evidence of 

disturbance to nest site from the above as follows:

California spotted owl – March 1 through August 15 

and northern goshawk – February 15 through 

September 15.
Over-snow Vehicle Use Designation

Tahoe National Forest

58

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Does the trail or area 

encompass sandhill crane 

nest sites?

No. N/A

Minimize harassment 

of wildlife.(continued)

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

Yes. A small portion of key deer winter range is 

located on the far southwestern portion of the 

Foresthill East area.

The portions of this Area that encompass key deer 

winter range will not be designated for OSV use 

under the proposed action.

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. SNYLF suitable habitat exists in the 

Foresthill East area, but no SNYLF detections are

known.

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

SNYLF suitable habitat in the Foresthill East area 

would be protected by only allowing OSV use to 

occur when there is adequate snow depth to prevent 

damage to aquatic habitats including, soil, water and 

riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, 

or other sensitive forest 

carnivores?

Yes, there are marten detections in the Foresthill 

East Area.

OSV use has the potential to adversely affect 

subnivean habitat used by marten and its prey 

species, such as small mammals. OSV use can 

result in snow compaction and loss of subnivean 

habitat particularly when snow depth is low or 

inadequate. 

• OSV use is allowed only when there is adequate 

snow depth to prevent disruption to subnivean 

habitat important to prey species for the marten, 

wolverine or other sensitive forest carnivores.

• Marten Den Sites (SNFPA ROD - S&G 89, pg. 

62): Mitigate impacts where there is documented 

evidence of disturbance to the den site from 

existing recreation, off-highway vehicle route, trail, 

and road uses (including road maintenance). 

Evaluate proposals for new roads, trails, off 

highway vehicle routes, and recreation and other 

developments for their potential to disturb den 

sites.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

59

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, 

Wilderness, Wild & Scenic 

Rivers, ski areas (crosscountry, downhill), and/or 

IRAs?

The North Fork American Wild and Scenic River 

borders the northern portion of the Area, and the 

Granite Chief Wilderness borders the eastern 

portion of the Area.

Winter use of the River’s Wild and Scenic inner 

gorge is very infrequent due to lack of snow; 

hence, there are no known winter-use conflicts.

There is no known OSV use in Granite Chief 

Wilderness originating from the Foresthill East 

Area.

The Duncan Canyon IRA and the northeastern 

portion of the North Fork of the Middle Fork 

American River IRA are located in the Foresthill 

East Area. The Duncan Canyon IRA receives little 

if any non-motorized use during the winter, given 

its distance from the nearest winter trailhead at 

China Wall. The North Fork of the Middle Fork 

American River IRA is below 4,500 feet so it only 

infrequently receives snow and therefore little, if 

any, OSV use. The potential for conflicts between 

motorized and non-motorized winter use of these 

IRAs is minimal.

The Forest Plan does not designate the North Fork 

American Wild and Scenic River or Granite Chief 

Wilderness for OSV use (LRMP, pp. V-419 and V429). 

The North Fork of the Middle Fork American River 

IRA will not be designated for OSV use under the 

proposed action.

Conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of 

Does the area abut a 

wilderness area or National 

Park managed by other 

agencies?

No N/A

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other 

Federal lands?

No. N/A

Does the area abut a 

developed recreation site on 

neighboring Federal lands?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

60

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? 

If so, does this affect safety 

and winter management of 

this area?

Yes. There are two Forest Service roads that 

allow for wheeled traffic in winter (22 and 44 

Roads). However, these roads are surrounded by 

roads that do not allow wheeled motor vehicle use 

over snow, and are, therefore, effectively 

inaccessible to wheeled traffic.

Does this area cross or 

contain plowed roads 

allowing vehicle use? Are 

road crossings allowed by 

OSVs?

No. 

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands.

Does this area receive use by 

both tracked over-snow 

vehicles under 50 inches

wide and over 50 inches

wide? Is this potentially 

creating conflicts?

Yes. Use by tracked over-snow vehicles over 

50 inches is not common, but is expected to 

increase over time.

Over-snow vehicles larger than 50 inches wide would 

not be allowed off the designated OSV trail system.

Experience has shown there is adequate width for 

combined use of the snow-trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

Parcels of private property exist approximately 

2 miles from the China Wall Winter Trailhead. 

These parcels contain a few residences. 

Residents live year-round in this rural community 

and the distinct characteristics of this community 

are compatible with winter motorized uses of all 

types

There are no recreation residences in this Area.

The Forest Service is not authorizing public use of 

private lands. Private lands will be displayed on the 

Tahoe National Forest Over-Snow Vehicle Use Map. 

Signing, education, Over Snow Vehicle Use maps.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

61

Foresthill North Area

This approximately 36,151-acre area is located south of Interstate 80 and north of the North Fork American Wild and Scenic River corridor. 

On its western boundary, the Area follows the Tahoe National Forest boundary and its eastern boundary borders the Summit West Area. The 

area is mostly over 4,500 feet, with roads and terrain suitable for over-snow vehicle use. This area does not include any designated OSV trails, 

and is used by advanced over-snow vehicle riders.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with OSV

use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This Area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (e.g. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants and 

soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows when 

snow depths are inadequate for resource 

protection.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

62

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

soil and water quality.

(continued)

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could 

potentially be affected by OSV 

use? 

Yes. There are several occurrences of Sensitive 

plants in the Foresthill North area: 

Sensitive plants – Botrychium crenulatum, 

Erigeron miser, Phacelia stebbinsii

Sensitive plant occurrences within the Foresthill 

North area will be protected by allowing OSV use 

to occur only when there is adequate snow depth 

to prevent damage to plants and prevent soil 

compaction.

Does the trail or area include 

designated botanical areas (SIA, 

RNA)?

No N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, there are 6 northern goshawk PACs and 9 

California spotted owl PACs in the Foresthill 

North area. 

Generally, goshawks and spotted owls initiate 

breeding in February and March, respectively. 

OSV use during the breeding season has the 

potential to disturb nesting owls and goshawks 

and could potentially disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and road 

uses (including road maintenance). Evaluate 

developments for their potential to disturb nest site.

Implement a breeding season limited operating 

period if there is documented evidence of 

disturbance to nest site from the above as follows:

California spotted owl – March 1 through August 15 

and northern goshawk – February 15 through 

September 15.

Does the trail or area encompass 

sandhill crane nest sites?

No N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A

Does the trail or area contain key 

deer winter range?

No.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

63

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

• The Foresthill North Area has suitable and 

designated critical habitat for the Sierra 

Nevada yellow-legged frog (SNYLF), but no 

known detections.

• There is a known foothill yellow-legged frog 

(FYLF) detection.

• There is suitable habitat for the California redlegged frog (CRLF), but no known occupied 

habitat.

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

TES aquatic and designated critical habitat in the 

Foresthill North Area would be protected by only 

allowing OSV use to occur when there is adequate 

snow depth to prevent damage to aquatic habitats 

including, soil, water and riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

Yes. There are no known detections of marten or 

wolverine in the Foresthill North Area. However, 

there is a small proportion of moderate quality 

wolverine denning habitat in the northern and 

eastern-most edge of the area, as well as marten 

habitat.

OSV use has the potential to adversely affect 

subnivean habitat used by martens and 

wolverines and their prey species, such as small 

mammals. OSV use can result in snow 

compaction and loss of subnivean habitat 

particularly when snow depth is inadequate.

• OSV use is allowed only when there is 

adequate snow depth to prevent disruption to 

subnivean habitat important to prey species for 

the marten, wolverine or other sensitive forest 

carnivores.
Over-snow Vehicle Use Designation

Tahoe National Forest

64

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill)?

Yes. The North Fork American Wild and Scenic 

River borders the southern portion of the 

Foresthill North Area. Based on District 

observations, winter use of the River’s inner 

gorge is non-existent. Due to the lack of winter 

use of the inner canyon near where any 

motorized over-snow vehicles operate, there are 

no known winter recreation use conflicts in the 

Wild and Scenic River Area.

There is the potential for conflicts between 

motorized and non-motorized winter 

recreationists in the Loch Leven Lakes area, 

which is used by both user groups. However, 

OSV use is in the Loch Leven Lakes area is 

limited due to the advanced skills needed to ride 

the area. Some complaints of noise have been 

made to the District from snowbike use in the 

area.

Trail etiquette information would be placed on the 

Tahoe NF Over Snow Vehicle Use map.

The Loch Leven Lakes area (which is located in the 

northeast portion of the Foresthill North Area) is not 

designated for OSV use under the proposed action, 

thereby minimizing the potential for conflicts 

between motorized and non-motorized winter 

recreationists in this area. 

Conflicts between 

motor vehicle use and 

existing or proposed 

Does the area abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

recreational uses of 

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No. N/A

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? If

so, does this affect safety and 

winter management of this area?

Yes. Motorized wheeled vehicles are allowed to 

use the 19 Road in winter. Due to the infrequent 

use of this Road by either tracked or wheeled 

motorized vehicles in winter, there is little 

potential for conflict among different classes of 

motor vehicle uses on this Road.

If wheeled/tracked vehicle conflict arises on the 19 

Road, the District would monitor the situation and 

may install trail etiquette signs.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

65

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. (continued)

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

Yes. The area contains California State Highway 

40, which is plowed. There are no restrictions to

OSVs crossing the road.

When snow accumulation occurs at a sufficiently 

low elevation, Placer County Water Agency will 

plow the 96 Road (Mosquito Ridge Road) to the 

Interbay turnoff. 

The area abuts Interstate 80 which is plowed.

However, OSV crossings of the Interstate are not 

allowed.

There is no designated trail system in the area of 

HWY 40. OSV users will decide where it is safe to 

cross.

When the 96 Road is plowed to the Interbay 

turnoff, OSV users would unload their vehicles and 

start from that point, traveling east. They would not 

be crossing the plowed road west of the starting 

point.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands. (Fast –

snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this area receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow vehicles over 50 

inches is not common, but is expected to 

increase over time.

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV trail 

system. Experience has shown there is adequate 

width for combined use of the snow-trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

Yes. There are some vacation homes in the area 

of Big Bend.

Yes. The area includes the Big Bend and Casa 

Loma Recreation Residence Tracts.

Private landowners and recreation residence 

cabin owners engage in both motorized and nonmotorized forms of winter recreation. There have 

been no indications that theses uses are 

incompatible near these neighborhoods and 

residences. 

Signing, education, Over-Snow Vehicle Use maps.
Over-snow Vehicle Use Designation

Tahoe National Forest

66

Foresthill West

This approximately 32,957 acre area is located south of Interstate 80, east of Foresthill, south of the North Fork American River Wild and 

Scenic corridor, and the eastern boundary borders the Foresthill East Area. The area is mostly under the 4,500-foot elevation and receives little 

OSV use. This area does not include any groomed snow trails.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil 

during the times OSV use 

could occur? Is there potential 

for soil disturbance associated 

with OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and coverage can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow cover.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow to prevent damage to soils and 

vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the Fish and Wildlife Service. This 

area also contains sensitive riparian areas. If OSV 

use occurs when snow levels are low (i.e., during 

the shoulder seasons), OSV use can result in 

compaction of snow, crushing and loss of 

meadow/riparian plants and soil, hence, potentially 

causing damage and degradation to sensitive 

meadow/riparian areas. 

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow to prevent damage to soils 

and vegetation.

Use signage to discourage use in meadows when 

snow conditions are low.

Does the trail or area drain into 

a 303(d)-listed waterbody?

No

Does the area have a 

hydraulic mine site or sites?

Yes. The soils on hydraulic mine sites are often 

contaminated with mercury. Mercury attaches to 

soil particles and can be carried into nearby water 

bodies during rainstorms and snowmelt runoff.

Many of the hydraulic mine sites have dense brush 

which discourage OSV use. Adequate snow cover 

would be necessary to minimize mercury laden 

sediment from being transported to nearby 

waterbodies.

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

Yes, Sugarpine Reservoir is the drinking water 

source for the town of Foresthill. OSV use could 

cause sediment and the by-products of combustion 

engines to enter the reservoir.

To protect the reservoir, a buffer of 1000 feet or 

more for OSV use around the reservoir. Additional, 

use should only be allowed when there is adequate 

snow depth to protect the underlying soil and 

vegetation.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

67

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes. There are numerous occurrences of TES and 

Watchlist plant occurrences in the Foresthill West 

area: 

TES plants – Fritillaria eastwoodiae, Lewisia 

serrata, Packera layneae, Poa sierrae

Watchlist plants – Allium sanbornii var. sanbornii, 

Arctostaphylos mewukka ssp. truei, Cardamine 

pachystigma var. dissectifolia, Calystegia 

vanzuukiae, Chlorogalum grandiflorum, Clarkia

biloba ssp. brandegeeae

Sensitive and Watchlist plant occurrences within 

the Foresthill East area will be protected by 

allowing OSV use to occur only when there is 

adequate snow to prevent damage to plants and 

prevent soil compaction.

Would the trail or area include 

designated botanical areas 

(SIA, RNA)?

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest 

sites?

Yes, there are 2 northern goshawk PACs and 9 

California spotted owl PACs in the Foresthill West 

area. 

Generally, goshawk and spotted owls initiate 

breeding in February or March when the OSV 

season is waning, depending on snow levels and 

conditions. It is expected that the overlap between 

OSV use and the nesting season would be limited, 

and therefore, disturbance and disruption to 

nesting activities is expected to be low.

LRMP S&G 82. Mitigate impacts where there is 

documented evidence of disturbance to the nest 

site from existing recreation, off highway vehicle 

route, trail, and road uses (including road 

maintenance). Evaluate developments for their 

potential to disturb nest site.

Implement a breeding season Limited Operating 

Period if there is documented evidence of 

disturbance to nest site from the above as follows:

California spotted owl – March 1 through August 15 

and northern goshawk – February 15 through 

September 15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

68

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize harassment 

of wildlife.(continued)

Does the trail or area contain 

key deer winter range?

Yes. The Foresthill West area contains both deer 

winter and critical winter range. OSV use is not 

likely to cause adverse effects to winter and critical 

winter deer range, due to the location at lower 

elevations that is generally not conducive to 

snowmobiling. 

A large proportion of the deer critical winter range 

including some areas of deer winter range falls 

within areas prohibited to OSV use per the LRMP 

to protect deer on winter and critical winter ranges. 

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. 

There are numerous detections of foothill yellowlegged frog (FYLF) in the Foresthill West area. 

FYLF occurs in locations that are generally below 

elevations where OSV activities occur. 

FYLF and habitat in the Foresthill West area would 

be protected by only allowing OSV use to occur 

when there is adequate snow depth to prevent 

damage to aquatic habitats including, soil, water 

and riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, 

or other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, 

Wilderness, Wild & Scenic 

Rivers, ski areas (crosscountry, downhill), and/or 

IRAs?

Yes. The North American River designated Wild & 

Scenic River borders the northern portion of the 

area. However, based on district observations 

winter use of the river’s Wild and Scenic inner 

gorge is non-existent. Due to the lack of use of the 

inner canyon and the lack of OSV use, there are 

no known winter-use conflicts.

“Share the Trail” information would be placed on 

the Tahoe NF Over Snow Vehicle Use map.

Conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of 

Does the area abut a 

wilderness area or National 

Park managed by other 

agencies?

No

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No.

Does the area abut a 

developed recreation site on 

neighboring Federal lands?

No
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

69

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? 

If so, does this affect safety 

and winter management of this 

area?

Yes. There exist several Forest Service roads that 

allow for wheeled traffic in winter (10, 23, 24, 88-

11, 96). Due the infrequent use of either tracked or 

wheeled motorized vehicles in winter, there is little 

opportunity for conflict on these roads.

If wheeled/tracked vehicle conflict arises in this 

area, the district would monitor the situation and 

may install share the road signs.

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings 

allowed by OSVs?

Yes. The area contains Foresthill Divide Road 

(Placer County), which is plowed through this area.

There are no restrictions to OSVs crossing the 

road.

There is no designated trail system in the area.

OSV users will decide where it is safe to cross.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands.

Does this area receive use by 

both tracked over-snow 

vehicles under 50 inches wide

and over 50 inches wide? Is 

this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles over 

50 inches is not common, but is expected to 

increase over time.

Experience has shown that there is adequate 

space for all users. The district will monitor any 

future user complaints.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

Yes. The town of Foresthill and community of 

Baker Ranch are just west of this area.

No, there are no recreation residence tracks in this 

area.

Due to their elevation, snow of sufficient depth to 

utilize over-snow vehicles is rare in or around the 

town of Foresthill (3,000 feet) and Baker Ranch 

(3,700 feet). The residents that live year-round in 

these rural communities are generally compatible 

with motorized uses of all types.

The lands immediately surrounding the residences 

in the town of Foresthill and community of Baker 

Ranch are private and not subject to Forest Service 

jurisdiction.
Over-snow Vehicle Use Designation

Tahoe National Forest

70

Lafayette Area

This approximately 46,807-acre area is located northeast of Malakoff Diggins State Historic Park; Highway 49 forms its northern boundary. 

The Area contains Lafayette Ridge and the small communities of Forest City and Alleghany and has numerous private inholdings. The 

southern half of the Area is under 4,500 feet and rarely receives sufficient snow to attract over-snow vehicle users. The northern half of the 

Area is mostly over 4,500 feet, with roads and terrain suitable for over-snow vehicle use. Over-snow vehicle use occurs in this Area, but not in 

significant amounts.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (e.g. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants and 

soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows when 

snow depths are inadequate for resource 

protection.

Does the trail or area drain into 

a 303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

Yes. The soils on hydraulic mine sites are often 

contaminated with mercury. Mercury attaches to 

soil particles and can be carried into nearby 

water bodies during rainstorms and snowmelt 

runoff.

Many of the hydraulic mine sites have dense brush, 

which discourages OSV use in these areas. 

Adequate snow cover would minimize mercury 

contaminated sediment from being transported to 

nearby waterbodies.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

71

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to soil 

and water 

quality.(continued)

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes. There are several occurrences of Sensitive 

plants and a Watchlist plant in the Lafayette 

Area: 

Sensitive plants – Botrychium simplex, Bruchia 

bolanderi, Cypripedium fasciculatum, Lewisia 

cantelovii, Lewisia kelloggii ssp. hutchisonii, 

Penstemon personatus, Tauschia howellii

Watchlist plants – Darlingtonia californica

If OSV use occurs when snow depth and density 

are inadequate (e.g. during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Sensitive and/or Watchlist 

plants, potentially causing direct mortality and/or 

loss of vigor and productivity.

Sensitive plant occurrences within the Lafayette 

area will be protected by allowing OSV use to 

occur only when there is adequate snow depth to 

prevent damage to plants and prevent soil 

compaction.

Does the trail or area include 

designated botanical areas 

(SIA, RNA)?

No N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, there are 13 northern goshawk PACs and 

29 California spotted owl PACs in the Lafayette 

area. 

Generally, goshawks and spotted owls initiate 

breeding in February and March, respectively. 

OSV use during the breeding season has the 

potential to disturb nesting owls and goshawks 

and could potentially disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and road 

uses (including road maintenance). Evaluate 

developments for their potential to disturb nest site.

Implement a breeding season limited operating 

period if there is documented evidence of 

disturbance to nest site from the above as follows:

California spotted owl – March 1 through August 15 

and northern goshawk – February 15 through 

September 15.
Over-snow Vehicle Use Designation

Tahoe National Forest

72

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize harassment of 

wildlife. (continued)

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

Yes. The Lafayette area contains key deer 

winter range in the southwest corner. 

The lower elevations of the Lafayette Area (below 

4,500 feet) at which deer winter range occurs will 

not be designated for OSV use under the proposed 

action.

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. 

• There are numerous foothill yellow-legged frog 

(FYLF) detections in the Lafayette Area.

• There is suitable habitat for the federally listed 

California red-legged frog (CRLF) and Sierra 

Nevada yellow-legged frog (SNYLF) in the 

Lafayette Area, but no known occupied 

habitat.

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with 

exposed soil can lead to reduced water quality 

from soil erosion and sedimentation.

TES aquatic habitat in the Lafayette area would be 

protected by only allowing OSV use to occur when 

there is adequate snow depth to prevent damage 

to aquatic habitats including, soil, water and 

riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes. There is a wolverine detection on SPI land 

in the Lafayette area, and it has the potential to 

occur on adjacent NFS land.

OSV use has the potential to adversely affect 

subnivean habitat used by wolverine and its prey 

species, such as small mammals. OSV use can 

result in snow compaction and loss of subnivean 

habitat particularly when snow depth is low or 

inadequate.

• OSV use is allowed only when there is 

adequate snow depth to prevent disruption to 

subnivean habitat important to prey species for 

the marten, wolverine or other sensitive forest 

carnivores.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

73

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this trail or 

area cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, Wilderness, 

Wild & Scenic Rivers, ski areas 

(cross-country, downhill), or 

IRAs)?

The Lafayette Area encompasses the western 

portion of the Middle Yuba Inventoried Roadless 

Area (IRA). As this area receives light OSV use 

(most of it lies below 4,500 feet), the potential for 

conflicts with non-motorized users is minimal.

Most of the Middle Yuba IRA that lies within the 

Lafayette Area will not be designated for OSV use 

under the proposed action.

Conflicts between motor 

vehicle use and existing 

or proposed recreational 

uses of neighboring 

Does the trail or area abut a 

wilderness area or National 

Park managed by other 

agencies?

No N/A

Federal lands Does the trail or area abut a 

non-motorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail or area abut a 

developed recreation site on 

neighboring Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different classes 

of motor vehicle uses of 

NFS lands. 

Does this area allow wheeled 

motor vehicle use over snow? If

so, does this affect safety and 

winter management of this 

area?

Yes. The 98 Road allows for over snow wheeled 

traffic. 

No mitigations are necessary due to the long 

distance from the nearest plowed road as over 

snow wheeled traffic does not use this road.

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings 

allowed by OSVs?

Yes. Sierra County 

Public Works plows County Road 180 to the 

community of Alleghany. Tracked winter vehicles 

are allowed to cross the County Road.

Over-snow vehicle users will decide where it is safe 

to cross the county road.

Minimize conflicts 

among different classes 

of motor vehicle uses of 

other neighboring 

Federal lands. 

Does this area receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow vehicles over 50 

inches wide is not common, but is expected to 

increase over time.

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV trail 

system. Experience has shown there is adequate 

width for combined use of the snow-trail system.
Over-snow Vehicle Use Designation

Tahoe National Forest

74

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking 

into account sound, 

emissions, and other 

factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

This area includes the towns of Forest City and 

Alleghany. Residents that live year-round in the 

town of Alleghany are accustomed to living in 

snow in the winter, many of whom own oversnow vehicles, and the distinct characteristics of 

this community are compatible with motorized 

uses of all types.

Only one family lives year round in Forest City.

The lands immediately surrounding the residences 

in the town of Alleghany are private and not subject 

to Forest Service jurisdiction.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

75

Reservoirs Area

This approximately 40,883-acre area includes the generally lower snow accumulation areas around Boca, Stampede, and Prosser Reservoirs, 

north and east of Truckee. No designated OSV trails exist within this area.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to soil 

and water from OSV use? Potential 

for exposed soil during the times 

OSV use could occur? Is there 

potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts from OSV 

use. Snow depth and density can vary 

considerably, especially in the spring and fall. 

OSV use can cause rutting on underlying 

roads and trails, soil disturbance to 

streambanks at crossings and in areas without 

adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for example 

wet meadows, fens, etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish and 

Wildlife Service National Wetlands Inventory in 

the Reservoirs Area. This area also contains 

sensitive riparian areas. If OSV use occurs 

when snow depth and density are inadequate 

(e.g. during the shoulder seasons), OSV use 

can result in compaction of snow, crushing and 

loss of meadow/riparian plants and soil, hence, 

potentially causing damage and degradation to 

sensitive meadow/riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows when 

snow depths are inadequate for resource 

protection.

Does the trail or area drain into a 

303(d)-listed waterbody?

Yes. The Truckee River is listed as impaired 

due to sediment.

Sediment contribution from OSV use in this area 

would be minimized by allowing OSV use only 

when there is adequate snow depth to prevent 

disturbance to bare soil.

Does the area have a hydraulic mine 

site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

76

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in or 

around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

Yes, The Sensitive plant Ivesia sericoleuca

(Plumas mousetail) ocurrences (13) are known 

to occur in the Reservoirs Area. If OSV use 

occurs when snow depth and density are 

inadequate (e.g. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing of Ivesia sericoleuca plants, 

potentially causing direct mortality and/or loss 

of vigor and productivity. 

Sensitive plan occurrences within the Reservoirs 

Area will be protected by allowing OSV use to 

occur only when there is adequate snow depth to 

prevent damage to plants and prevent soil 

compaction. 

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No.

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, there are four northern goshawk PACs in 

the Reservoirs Area.

Goshawks generally initiate breeding in 

February. OSV use during the goshawk 

breeding season has the potential to disrupt 

nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and road 

uses (including road maintenance). Evaluate 

developments for their potential to disturb nest site.

Implement a breeding season limited operating 

period from February 15 through September 15 if 

there is documented evidence of disturbance to 

nest sites.

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

Yes, there are known bald eagle nest sites at 

Stampede, Boca, and Prosser Reservoirs.

OSV use can result in disturbance and 

disruption to breeding bald eagles. 

Bald eagles are protected under the Bald and 

Golden Eagle Protection Act (Eagle Act) and the 

Migratory Bird Treaty Act. USFWS developed 

National Bald Eagle Management Guidelines to 

provide guidance in minimizing human impacts to 

bald eagles that may affect their ability to forage, 

nest, roost, breed, or raise young, particularly 

where they may cause disturbance, which is 

prohibited by the Eagle Act. During the breeding 

season (January 1 to August 31), do not operate 

snowmobiles within 330 feet of known, occupied 

nests. In open areas, where there is increased 

visibility and exposure to noise, the distance should 

be extended to 660 feet.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

77

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize harassment 

of wildlife. (continued)

Does the trail or area contain key 

deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes, there are three historic SNYLF detections 

(prior to 1990) and suitable habitat within the 

Reservoirs Area. No SNYLF designated critical 

habitat occurs within the Reservoirs OSV open 

area. OSV use has the potential to disrupt 

and/or degrade SNYLF habitat by damaging 

habitat and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with 

exposed soil can lead to reduced water quality 

from soil erosion and sedimentation.

Sierra Nevada yellow-legged frog: Historic SNYLF 

locations and suitable habitat within the Reservoirs 

Area will be protected by only allowing OSV use to 

occur when there is adequate snow depth to 

protect the frogs and their habitats, especially when 

frogs may be dispersing over the snow during the 

spring.

Does the trail or area contain habitat 

for marten, wolverine, or other 

sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor 

vehicle use and 

existing or proposed 

recreational uses of 

NFS lands 

Would OSV use of this area cause 

conflicts with non-motorized visitors’ 

desire for solitude and quiet 

recreation (for example, PCT, 

Wilderness, Wild & Scenic Rivers, 

ski areas (cross-country, downhill), 

and/or IRAs?

No. A segment of the Sagehen Creek 

Recommended Wild and Scenic River drains 

into Stampede Reservoir. No conflicts between 

OSV and non-motorized recreation uses have 

been identified for the Creek’s corridor in this 

Area.

N/A

Conflicts between 

motor vehicle use 

and existing or 

proposed recreational 

uses of neighboring 

Federal lands

Does the area abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

Does the area abut a non-motorized 

area on adjacent national forest or 

other Federal lands?

No N/A

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

78

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled motor 

vehicle use over snow? If so, does 

this affect safety and winter 

management of this area?

No N/A

Does this area cross or contain 

plowed roads allowing vehicle use?

Are road crossings allowed by 

OSVs?

Yes, within residential communities and the 

Russel Valley road.

There is no designated OSV trail system in the 

Reservoirs Area. The over-snow vehicles users will 

decide where it is safe to cross.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands.

Does this area receive use by both 

tracked over-snow vehicles under 50 

inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles 

(timber sleds, ATVs, UTVs, 4x4s, snow 

tractors) has been low in this area, but is 

expected to increase overtime as their 

popularity increases.

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV trail 

system. Experience has shown there is adequate 

width for combined use of the snow-trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider 

compatibility of motor 

vehicle use with 

existing conditions in 

populated areas, 

taking into account 

sound, emissions, 

and other factors.

Is the area adjacent to 

neighborhoods and communities? 

Is the area adjacent to recreation 

residences used during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the community?

Yes. There is a small potential for conflicts 

between motorized and non-motorized winter 

recreationists near the communities of Russel 

Valley and East Alder Creek. Private 

landowners use both motorized and nonmotorized recreation.

No recreation residences.

Truckee Ranger District will monitor any complaints 

from the communities. 
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

79

Sierraville East Area

This approximately 57,557-acre area includes Sardine Lookout, Mount Ina Coolbrith, and areas with less snow accumulation near the 

communities of Loyalton, Sierraville, and Sierra Brooks. The Sierraville East area includes the winter Babbitt Peak Research Natural Area 

north and west of Babbitt Lookout. No designated OSV trails exist within this area.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT INDICATORS If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to soil and 

water from OSV use? Potential for 

exposed soil during the times OSV 

use could occur? Is there potential for 

soil disturbance associated with OSV 

use?

Yes, there is potential for impacts from OSV 

use. Snow depth and density can vary 

considerably, especially in the spring and 

fall. OSV use can cause rutting on 

underlying roads and trails, soil disturbance 

to streambanks at crossings and in areas 

without adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for example 

wet meadows, fens, etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish and 

Wildlife Service National Wetlands 

Inventory. This area also contains sensitive 

riparian areas. If OSV use occurs when 

snow depth and density are inadequate (e.g. 

during the shoulder seasons), OSV use can 

result in compaction of snow, crushing and 

loss of meadow/riparian plants and soil, 

hence, potentially causing damage and 

degradation to sensitive meadow/riparian 

areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic mine 

site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a local 

community water supply?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

80

CRITERIA POTENTIAL EFFECT INDICATORS If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in or 

around the trail or area under 

consideration that could potentially be 

affected by OSV use? 

Yes, several sensitive plant occurrences are 

located in the Sierraville East Area, including 

Ivesia sericoleuca (Plumas mousetail), 

Ivesia aperta var. aperta (Sierra valley 

mousetail), Pyrrocoma lucida (sticky 

goldenweed), and Meesia uliginosa (meesia 

moss). If OSV use occurs during the 

shoulder seasons when snow depth and 

density are inadequate, OSV use can result 

in compaction of snow, crushing of TES 

plants and soil potentially causing direct 

mortality and/or loss of vigor and 

productivity. 

Sensitive plant occurrences within designated OSV 

open areas will be protected by allowing OSV use 

to occur only when there is adequate snow depth 

to prevent damage to plants and prevent soil 

compaction. 

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

Yes. The Babbitt Peak RNA is located in the 

Sierraville East Area.

The Forest Plan does not designate the Babbitt 

Peak RNA for OSV use (LRMP, pg. V-141).

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, five northern goshawk PACs are 

located within the Sierraville East area. 

Generally, goshawks initiate breeding in 

February or March. OSV use during the 

goshawk breeding season has the potential 

to disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and road 

uses (including road maintenance). Evaluate 

developments for their potential to disturb nest site.

Implement a breeding season limited operating 

period if there is documented evidence of 

disturbance to nest site from February 15 through 

September 15.

Does the trail or area encompass 

sandhill crane nest sites?

Yes, sandhill cranes are known to nest in 

the Kyburz Flat area during nesting season 

(March 15 through August 31). Sandhill 

crane nesting habitat can be adversely 

affected by OSV use through compaction of 

meadow vegetation and soils, if use occurs 

when snow depth and density are 

inadequate, particularly during the shoulder 

seasons.

The Forest Plan does not designate the Kyburz 

Flat area for OSV use from February 1 to July 15 

(LRMP, pg. V-206). The Kyburz Flat area is not 

proposed for OSV use designation under the 

proposed action.

OSV travel does occur on an OSV trail that is not 

under Forest Service jurisdiction along the northern 

side of the Kyburz Flat area (Sierra County Road 

450). The Forest Service does not have the 

authority to manage OSV use of this OSV trail.

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

81

CRITERIA POTENTIAL EFFECT INDICATORS If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize harassment 

of wildlife (continued)

Does the trail or area contain key 

deer winter range?

Yes, there is key deer winter range for the 

Loyalton-Truckee Deer Herd.

Key deer winter range is not designated for crosscountry OSV use under the Forest Plan (LRMP, pp. 

V-30, V-120, and V-124) or the proposed action.

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

There is a limited amount of SNYLF suitable 

habitat in the Sierraville East area at the 

very southwestern boundary. 

OSV use has the potential to disrupt and/or 

degrade SNYLF aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when snow 

depth and density are inadequate as 

evidenced by exposed soil and open 

waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from 

soil erosion and sedimentation.

SNYLF habitat will be protected by only allowing 

OSV use to occur when there is adequate snow 

depth to protect the frogs and their habitats.

Does the trail or area contain habitat 

for marten, wolverine, or other 

sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area cause 

conflicts with non-motorized visitors’ 

desire for solitude and quiet 

recreation (for example, PCT, 

Wilderness, Wild & Scenic Rivers, ski 

areas (cross-country, downhill), 

and/or IRAs?

No. The Bald Mountain Inventoried 

Roadless Area (IRA), which extends east 

onto the Humboldt-Toiyabe National Forest, 

lies within the Sierraville East Area. The 

Bald Mountain IRA is not designated for 

OSV use under the proposed action.

N/A

N/A

Conflicts between 

motor vehicle use and 

existing or proposed 

Does the area abut a wilderness area 

or National Park managed by other 

agencies?

No N/A

recreational uses of 

neighboring Federal 

lands

Does the trail or area abut a nonmotorized area on adjacent national 

forest or other Federal lands?

No N/A

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

82

CRITERIA POTENTIAL EFFECT INDICATORS If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled motor 

vehicle use over snow? If so, does 

this affect safety and winter 

management of this area?

No N/A

Does this area cross or contain 

plowed roads allowing vehicle use?

Are road crossings allowed by OSVs?

No. N/A

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands. 

Does this area receive use by both 

tracked over-snow vehicles under 50 

inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles has 

been very low in this area, but is expected to 

increase overtime as their popularity 

increases.

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV trail 

system. Experience has shown there is adequate 

width for combined use of the snow-trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to neighborhoods 

and communities? 

Is the area adjacent to recreation 

residences used during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the community?

Yes. There is small potential for conflicts 

between motorized and non-motorized 

recreationists near the communities of 

Loyalton, Sierra Brooks, and Sierraville. 

This area is adjacent to the communities of 

Loyalton, Sierra Brooks, and Sierraville. Due 

to its elevation, snow of sufficient depth to 

utilize over-snow vehicles is limited. 

Residents live year-round in this rural 

community and the distinct characteristics of 

this community are compatible with 

motorized uses of all types

No recreation residences.

Designate motorized use only on designated trails 

(underlying Forest Service Road System) near 

communities. Areas of potential conflict near these 

communities are not designated for cross-country 

OSV use under the proposed action. OSV use in 

this area is designated on an OSV trail that 

overlays Forest Service Road System, Bear Valley 

04 road, Troci Canyon Road.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

83

Sierraville North Area

The Sierraville North Area, approximately 17,564 acres, includes the Calpine area and Calpine Lookout (Sierraville District rental during 

winter months, with snowmobile, ski, or snowshoe access from Highway 89). There are no designated OSV trails available for grooming 

within this area.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil 

during the times OSV use 

could occur? Is there potential 

for soil disturbance associated 

with OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth and density to prevent 

damage to soils and vegetation, which will 

protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow levels are low (i.e. during the 

shoulder seasons), OSV use can result in 

compaction of snow, crushing and loss of 

meadow/riparian plants and soil, hence, 

potentially causing damage and degradation to 

sensitive meadow/riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation. OSV use in 

the Carman Valley area would be designated 

on trails overlaying Forest Service roads under 

the proposed action. 

Does the trail or area drain into 

a 303(d)-listed waterbody?

No

Does the area have a 

hydraulic mine site or sites?

No

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

84

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes, 20 TES occurrences are in the Sierraville 

North area [10 occurrences Ivesia sericoleuca

(Plumas mousetail) and 10 occurrences of 

Pyrrocoma lucida (sticky goldenweed)]. If OSV 

use occurs when snow depth and density are 

inadequate (i.e. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing of TES plants and soil, potentially 

causing direct mortality and/or loss of vigor and 

productivity. 

In the Sierraville North area, Sensitive plant 

occurrences will be protected by allowing 

OSV use to occur only when there is 

adequate snow depth to prevent damage to 

plants and prevent soil compaction. OSV use 

in the Carman Valley area would be 

designated on trails overlaying Forest Service 

roads under the proposed action.

Would the trail or area include 

designated botanical areas 

(SIA, RNA)?

No.

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest

sites?

Yes, within the Sierraville North area, there are 2 

northern goshawk PACs and 2 California spotted 

owl PACs. Spotted owls and goshawks initiate 

breeding in February and March when OSV 

disturbance during breeding season initiation has 

the potential to disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate 

impacts where there is documented evidence 

of disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season Limited 

Operating Period if there is documented 

evidence of disturbance to nest site from the 

above as follows: California spotted owl –

March 1 through August 15 and northern

goshawk – February 15 through September 

15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

85

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, 

or other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor 

vehicle use and 

existing or proposed 

recreational uses of 

NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, 

Wilderness, Wild & Scenic 

Rivers, ski areas (crosscountry, downhill), and/or 

IRAs?

No

Conflicts between 

motor vehicle use 

and existing or 

proposed recreational 

Does the area abut a 

wilderness area or National 

Park managed by other 

agencies?

No

uses of neighboring 

Federal lands

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Does the area abut a 

developed recreation site on 

neighboring Federal lands?

No

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? 

If so, does this affect safety 

and winter management of this 

area?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

86

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. (continued)

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings 

allowed by OSVs?

Yes. Highway 89 is plowed and traverses through 

this area. There would be no designated snow 

trails over underlying Forest Service roads that 

would cross the Highway 89; therefore, there 

would be no designated OSV crossings of 

Highway 89 under the proposed action.

N/A

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands.

Does this area receive use by 

both tracked over-snow 

vehicles under 50 inches wide

and over 50 inches wide? Is 

this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles has been 

very low in this area, but is expected to increase 

over time as their popularity increases.

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider 

compatibility of motor 

vehicle use with 

existing conditions in 

populated areas, 

taking into account 

sound, emissions, 

and other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the trail or area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this trail or 

area compatible with distinct 

characteristics of the 

community?

This area includes the town of Calpine. Due to its 

elevation, snow of sufficient depth to utilize oversnow vehicles is infrequent. Residents live yearround in this rural community, and the distinct 

characteristics of this community are compatible 

with motorized uses of all types

No.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

87

Sierraville West Area

This approximately 96,311-acre area contains the main concentration of East Side OSV groomed routes, including winter trailheads/OSV 

staging areas at Little Truckee Summit and Yuba Pass SnoPark. This area includes the Independence Management Area (MA #35), which is 

not designated for OSV use (Record of Decision for Eight Eastside Rivers Wild and Scenic River Study Report and Final Environmental 

Impact Statement (1999, ROD pg. 3; FEIS pg. C.4-C.5)). Sierraville West is bordered on the east by State Highway 89, the primary route 

between Sierraville and Truckee.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water 

quality.

Are there potential impacts to soil 

and water from OSV use? Potential 

for exposed soil during the times 

OSV use could occur? Is there 

potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow density and depth to prevent 

damage to soils and vegetation, which will 

protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (i.e. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants and 

soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

No

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

88

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

Yes, several TES and Watchlist plant 

occurrences are in the Sierraville West OSV 

area, including Botrichium ascendens 

(trianglelobe moonwort), Botrichium crenulatum 

(scalloped moonwort), Claytonia megarhiza 

(alpine springbeauty), Epilobium howellii (Yuba 

Pass willowherb), Erigeron miser (Starved 

fleabane), Eriogonum umbellatum var. 

torreyanum (Donner Pass buckwheat), Ivesia 

sericoleuca (Plumas mousetail), Ivesia aperta 

var. aperta (Sierra valley mousetail), Lewisia 

longipetala (Truckee lewisia) Pyrrocoma lucida

(sticky goldenweed), and Meesia uliginosa

(meesia moss),. Meesia triquetra (meesia moss), 

Tauschia howellii (Howell’s umbrellawort). If OSV 

use occurs when snow depth and density are 

inadequate (i.e. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing of TES and Watchlist plants and soil, 

potentially causing direct mortality and/or loss of 

vigor and productivity. 

TES plant occurrences within the Sierraville 

West area will be protected by allowing OSV use 

to occur only when there is adequate snow depth 

to prevent damage to plants and prevent soil 

compaction. 

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

Yes, this area encompasses the Upper 

Independence Creek Special Interest Area, 

established in the Record of Decision: Eight 

Eastside Rivers Wild and Scenic River Study 

Report and Final Environmental Impact 

Statement (February 1999). The Upper 

Independence Creek SIA was added to the 

Forest Plan as the Independence Management 

Area (MA #35).

The Forest Plan does not designate the 

Independence Management Area for OSV use.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

89

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize 

harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, within the Sierraville West area, there are 

32 northern goshawk PACs and 15 California 

spotted owl PACs. Spotted owls and goshawks 

initiate breeding in February and March when 

OSV disturbance during breeding season 

initiation has the potential to disrupt nesting 

activities.

SNFPA S&G 82 (pg. 61): Mitigate impacts where 

there is documented evidence of disturbance to 

the nest site from existing recreation, off highway 

vehicle route, trail, and road uses (including road 

maintenance). Evaluate developments for their 

potential to disturb nest site.

Implement a breeding season Limited Operating 

Period if there is documented evidence of 

disturbance to nest site from the above as 

follows: California spotted owl – March 1 through 

August 15 and northern goshawk – February 15 

through September 15.

Does the trail or area encompass 

sandhill crane nest sites?

Yes, sandhill cranes are known to nest March 15 

through August 31 at Perazzo Meadows. 

Sandhill crane nesting habitat can be adversely 

affected by OSV use through compaction of 

meadow vegetation and soils, if use occurs when 

snow depth and density are inadequate, 

particularly during the shoulder seasons.

Meadows will be protected by allowing OSV use 

to occur only when there is adequate snow depth 

to prevent damage to plants and prevent soil 

compaction. Include public education/information 

on the OSVUM to discourage OSV use in 

meadows when snow depths are inadequate for 

resource protection.

Does the trail or area encompass 

known bald eagle nest sites?

Yes, there are known bald eagle nest sites at 

Independence Creek, Webber Lake (pvt), and 

Milton Reservoir (pvt). 

OSV use near or adjacent to bald eagle nest 

sites has the potential to disrupt and/or disturb 

bald eagles during the nesting season, including 

nesting abandonment. The Bald Eagle and 

Golden Eagle Act prohibits the “take” of bald 

eagles, which includes both direct taking of 

individuals and take due to disturbance where 

“disturb” is defined as: “to agitate or bother a 

bald eagle to a degree that causes, or is likely to 

cause, based on the best scientific information 

available, 1) injury to an eagle, 2) a decrease in 

its productivity, by substantially interfering with 

normal breeding, feeding, or sheltering 

behavior.” (50 CFR 22.3). 

To minimize impacts, OSV use would be 

prohibited in or near occupied bald eagle nest 

sites during the nesting season (January 1

through August 15) within 330 feet of the nest. In 

open areas, where there is increased visibility 

and exposure to noise, this distance should be 

extended to 660 feet. 

Does the trail or area contain key 

deer winter range?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

90

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes. Federally threatened Lahontan cutthroat 

trout, federally endangered Sierra Nevada 

yellow-legged frog (SNYLF) occupied habitat and 

the northeast portion of the Black Butte SNYLF 

designated critical habitat all lie within the Sierra 

West area.

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

Sierra Nevada yellow-legged frog: SNYLF 

locations will be protected by only allowing OSV 

use to occur when there is adequate snow depth 

to protect the frogs and their habitats.

Lahontan cutthroat trout: Recovery populations 

of occupied LCT habitat in Independence Creek 

and Independence Lake are within areas not 

designated for OSV use in the Forest Plan as 

amended (Record of Decision for Eight Eastside 

Rivers Wild and Scenic River Study Report and 

Final Environmental Impact Statement (1999, 

ROD pg. 3; FEIS pg. C.4-C.5)). A portion of 

occupied LCT habitat within Austin Meadow that 

falls within the Sierraville West area will be 

protected by allowing OSV use only when there 

is adequate snow cover and depth to prevent 

damage to soil and water resources.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

Yes, several detections of both Pacific marten 

and wolverine are known in the Sierraville West 

area. 

OSV use has the potential to adversely affect 

subnivean habitat used by marten and its prey 

species, such as small mammals. OSV use can 

result in snow compaction and loss of subnivean 

habitat particularly when snow depth is low or 

inadequate. 

• OSV use is allowed only when there is 

adequate snow cover and depth to prevent 

disruption to subnivean habitat important to prey 

species for the marten, wolverine or other 

sensitive forest carnivores.

• Marten Den Sites (SNFPA ROD - S&G 89, pg. 

62): Mitigate impacts where there is 

documented evidence of disturbance to the den 

site from existing recreation, off-highway vehicle 

route, trail, and road uses (including road 

maintenance). Evaluate proposals for new 

roads, trails, off highway vehicle routes, and 

recreation and other developments for their 

potential to disturb den sites. 

•Wolverine Detections (SNFPA ROD S&G 32, pg. 

54): When verified (wolverine) sightings occur, 

conduct an analysis to determine if activities 

within 5 miles of a detection have a potential to 

affect the species. If necessary, apply a limited 

operating period from January 1 to June 30 to 

avoid adverse impacts to pot4ential breeding. 

Evaluate activities for a 2-year period for 

detections not associated with a den site.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

91

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor 

vehicle use and 

existing or proposed 

recreational uses of 

NFS lands 

Would OSV use of this area cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, PCT, 

Wilderness, Wild & Scenic Rivers, 

ski areas (cross-country, downhill) 

and/or IRAs?

Yes: There is the potential for conflicts between 

motorized and non-motorized recreationists on 

the PCT, which traverses the Sierraville West 

Area towards its western side.

The Sierraville West Area includes the northern 

portion of the Castle Peak Inventoried Roadless 

Area (IRA). However, this part of the Castle Peak 

IRA receives little if any non-motorized use 

during the winter, given its distance from the 

nearest winter trailheads at Donner Summit and 

Little Truckee Summit.

“Winter use (cross-country skiing and 

snowshoeing) [on the PCT] should be 

accommodated where practical and feasible”

(USDA Forest Service 1982).

Motorized use is prohibited on the PCT. Six

designated OSV crossings of the PCT are 

proposed for the relatively long segment of the 

Trail that traverses the Sierraville West Area. 

The PCT segment in this Area and the 

designated OSV crossings are located a long 

distance from winter trailhead parking and 

access at Donner Summit and Little Truckee 

Summit. This distance limits the use of this 

segment of the PCT by winter non-motorized 

recreationists and also limits the potential for 

noise conflicts along the PCT in this Area. 

Conflicts between 

motor vehicle use 

and existing or 

Does the area abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

proposed 

recreational uses of 

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

Does this area allow wheeled 

motor vehicle use over snow? If so, 

does this affect safety and winter 

management of this area?

No N/A

lands. Does this area cross or contain 

plowed roads allowing vehicle use?

Are road crossings allowed by 

OSVs?

Yes. Highway 89 is plowed and is on the eastern 

edge of this area. There would be no designated 

snow trails over underlying Forest Service roads 

that would cross Highway 89; therefore, there 

would be no designated OSV crossings of 

Highway 89 under the proposed action.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

92

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands.

Does this area receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles of all 

widths is common place (grooming machine, 

snow tractors, snowmobile, tracked motorcycles, 

tracked ATVs, tracked 4x4s)

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider 

compatibility of 

motor vehicle use 

with existing 

conditions in 

populated areas, 

taking into account 

sound, emissions, 

and other factors.

Is the area adjacent to 

neighborhoods and communities? 

Is the area adjacent to recreation 

residences used during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the community?

No.

No
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

93

South of 20 Area

This approximately 17,346-acre area is located approximately 5 miles east of Nevada City/Grass Valley on the south side of Highway 20 to 

the intersection with Interstate 80. The area has numerous private inholdings. The southern edge ends along the Bear River on the Tahoe 

National Forest boundary. The southern half of the area is under 4,500 feet and rarely receives sufficient snow to attract over-snow vehicle 

users, while the northern half includes the Burlington OHV area and is around 4,500 feet, with roads and terrain suitable to over-snow vehicle 

use. Over-snow vehicle users do travel to this area to ride, but not in large numbers.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage 

to soil and water 

quality.

Are there potential impacts to soil 

and water from OSV use? Potential 

for exposed soil during the times 

OSV use could occur? Is there 

potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts from OSV 

use. Snow depth and coverage can vary 

considerably, especially in the spring and fall.

OSV use can cause rutting on underlying roads 

and trails, soil disturbance to streambanks at 

crossings and in areas without adequate snow 

cover.

Soil and water resources will be protected by 

allowing OSV use to occur only when there 

is adequate snow depth and density to 

prevent damage to soils and vegetation, 

which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish and 

Wildlife Service National Wetlands Inventory.

This area also contains sensitive riparian 

areas. If OSV use occurs when snow depth 

and density are inadequate (i.e. during the 

shoulder seasons), OSV use can result in 

compaction of snow, crushing and loss of 

meadow/riparian plants and soil, hence, 

potentially causing damage and degradation to 

sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will 

be protected by allowing OSV use to occur 

only when there is adequate snow depth to 

prevent damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows 

when snow depths are inadequate for 

resource protection.

Does the trail or area drain into a 

303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

Yes. The soils on hydraulic mine sites are often 

contaminated with mercury. Mercury attaches 

to soil particles and can be carried into nearby 

water bodies during rainstorms and snowmelt 

runoff.

Many of the hydraulic mine sites have dense 

brush which discourage OSV use. Adequate 

snow cover would minimize mercury 

contaminated sediment from being 

transported to nearby waterbodies.
Over-snow Vehicle Use Designation

Tahoe National Forest

94

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage 

to soil and water 

quality.(continued)

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No

Minimize damage 

to vegetation and 

other forest 

resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

Yes. There are several occurrences of 

Sensitive plants and a Watchlist plant in the 

South of 20 area: 

Sensitive plants – Cypripedium fasciculatum, 

Fritillaria eastwoodiae, Poa sierrae

Watchlist plants – Arctoshaphylos nisseniana, 

Cardamine pachystigma var. dissectifolia

If OSV use occurs when snow depth and

density are inadequate (i.e. during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Sensitive and/or Watchlist 

plants, potentially causing direct mortality 

and/or loss of vigor and productivity.

Sensitive plant occurrences within the South 

of 20 area will be protected by allowing OSV 

use to occur only when there is adequate 

snow depth to prevent damage to plants 

and prevent soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No.

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize 

harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, there are 7 northern goshawk PACs and 

21 California spotted owl PACs in the South of 

20 area. 

Spotted owls and goshawks initiate breeding in 

February and March when OSV disturbance 

during breeding season initiation has the 

potential to disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate

impacts where there is documented 

evidence of disturbance to the nest site from 

existing recreation, off highway vehicle route, 

trail, and road uses (including road 

maintenance). Evaluate developments for 

their potential to disturb nest site.

Implement a breeding season Limited 

Operating Period if there is documented 

evidence of disturbance to nest site from the 

above as follows: California spotted owl –

March 1 through August 15 and northern

goshawk – February 15 through September 

15.

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

95

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize 

harassment of 

wildlife.

(continued)

Does the trail or area encompass 

known bald eagle nest sites?

Yes. There is a known bald eagle nest territory 

at Deer Creek/Scotts Flat Reservoir within the 

South of 20 area. 

This nest site is located at low elevation where 

OSV use is not likely to occur and therefore 

would not impact or disrupt bald eagle nesting. 

N/A

Does the trail or area contain key 

deer winter range?

Yes. The South of 20 Area contains key deer 

winter range.

Key deer winter range in the South of 20 

Area will not be designated for OSV use 

under the proposed action.

Minimize 

significant 

disruption of 

wildlife habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes. 

• There are numerous detections of FYLF and 

a Western pond turtle detection in the South 

of 20 area. 

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with 

exposed soil can lead to reduced water quality 

from soil erosion and sedimentation.

TES aquatic habitat in the South of Hwy 20 

area would be protected by only allowing 

OSV use to occur when there is adequate 

snow depth to prevent damage to aquatic 

habitats, including soil, water and riparian 

vegetation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor 

vehicle use and 

existing or 

proposed 

recreational uses 

of NFS lands 

Would OSV use of this area cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, PCT, 

Wilderness, Wild & Scenic Rivers, 

ski areas (cross-country, downhill), 

and/or IRAs?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

96

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Conflicts between 

motor vehicle use 

and existing or 

Does the area abut a wilderness 

area or National Park managed by 

other agencies?

No

proposed 

recreational uses 

of neighboring 

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Federal lands Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of 

NFS lands. 

Does this area allow wheeled 

motor vehicle use over snow? If so, 

does this affect safety and winter 

management of this area?

Yes. Forest Service Road 0424-006 for public 

use.

There is rarely snow at the elevation of this 

road and it does not attract OSV use.

Does this area cross or contain 

plowed roads allowing vehicle use?

Are road crossings allowed by 

OSVs?

Yes. On its northern boundary it borders State 

Highway 20.

OSV use will not be designated on the north 

side of Highway 20 adjacent to the South of 

20 Area, so there will be no reason for OSV 

crossings of State Highway 20.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of 

other neighboring 

Federal lands. 

Does this area receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles over 

50 inches is not common, but is expected to 

increase over time.

Over-snow vehicles larger than 50 inches 

wide would not be allowed off the designated 

OSV trail system. Experience has shown 

there is adequate width for combined use of 

the snow-trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider 

compatibility of 

motor vehicle use

with existing 

conditions in 

populated areas, 

taking into account 

sound, emissions, 

and other factors.

Is the area adjacent to 

neighborhoods and communities? 

Is the area adjacent to recreation 

residences used during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the community?

No.

No.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

97

Summit West Area

This approximately 15,560-acre area lies directly south of Interstate 80 and west of the Sierra Crest at Donner Summit, and includes ski 

resorts, the Benson Hut, Onion Creek Experimental Forest, and Lyon Peak/Needle Lake Research Natural Area (RNA). No Forest Service 

groomed OSV trails are located within this Area. The Pacific Crest National Scenic Trail traverses along, and adjacent to, the Area’s eastern

boundary. The Summit West Area contains a mix of public and private lands, and abuts the Granite Chief Wilderness on its southern border 

and the North Fork American River Wild and Scenic corridor on its southwest boundary. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to soil 

and water from OSV use? Potential

for exposed soil during the times 

OSV use could occur? Is there 

potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts from OSV 

use. Snow depth and coverage can vary 

considerably, especially in the spring and fall.

OSV use can cause rutting on underlying 

roads and trails, soil disturbance to 

streambanks at crossings and in areas without 

adequate snow cover.

Soil and water resources will be protected 

by allowing OSV use to occur only when 

there is adequate snow to prevent damage 

to soils and vegetation, which will protect 

water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

Yes. There are mapped meadows and 

wetlands designated by the US Fish and 

Wildlife Service. This area also contains 

sensitive riparian areas. If OSV use occurs 

when snow levels are low (i.e. during the 

shoulder seasons), OSV use can result in 

compaction of snow, crushing and loss of 

meadow/riparian plants and soil, hence, 

potentially causing damage and degradation to 

sensitive meadow/riparian areas.

Meadows, wetlands and riparian areas will 

be protected by allowing OSV use to occur 

only when there is adequate snow to 

prevent damage to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

No

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

98

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

Yes, there are occurrences of 5 Sensitive plant 

species in the Summit west area: Erigeron 

miser, Eriogonum umbellatum var. 

torreyanum, Lewisia kelloggii ssp. hutchisonii, 

Lewisia longipetala, and Phacelia stebbinsii.

If OSV use occurs when snow levels are low 

(i.e. during the shoulder seasons), OSV use 

can result in compaction of snow, crushing of 

Sensitive plants, potentially causing direct 

mortality and/or loss of vigor and productivity. 

Sensitive plant occurrences within the 

Sierraville West area will be protected by 

allowing OSV use to occur only when there 

is adequate snow to prevent damage to 

plants and prevent soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

Yes. The Lyon Peak Needle Lake RNA and 

the Onion Creek Experimental Forest both fall 

within the Summit West area. 

OSV use is prohibited within these 

designated botanical areas.

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, there is a northern goshawk and a 

California spotted owl PAC within the Summit 

West area.

Generally, goshawk and spotted owl nesting 

season initiates in February/March when the 

OSV season is waning, depending on snow 

levels and conditions. It is expected that the 

overlap between OSV use and the nesting 

season would be limited, and therefore, 

disturbance and disruption to nesting activities 

is expected to be low.

The spotted owl PAC is located within the 

Onion Creek Experimental Forest, which is 

prohibited to OSV use. The majority of the 

goshawk PAC is located within the Onion 

Creek Experimental Forest. 

LRMP S&G 82 would apply to goshawk or 

spotted owl PACs where OSV use is 

allowed: Mitigate impacts where there is 

documented evidence of disturbance to the 

nest site from existing recreation, off 

highway vehicle route, trail, and road uses 

(including road maintenance). Evaluate 

developments for their potential to disturb 

nest site.

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A

Does the trail or area contain key 

deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

99

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes, there is a historic SNYLF record (1958) 

and a more recent record from 1998, SNYLF 

suitable habitat, and SNYLF designated critical 

habitat in the Summit West area. 

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs during low snow conditions as 

evidenced by exposed soil and open 

waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation. 

Areas open to OSVs in the Summit West 

area would be protected by only OSVs use 

to occur when there is adequate snow depth 

to prevent damage to vegetation and soils.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

Yes, there is suitable marten habitat within the 

Summit West area and known detections to 

the just outside the eastern boundary.

There is moderately suitable wolverine 

denning habitat within the area as represented 

by 3-5 out of 7 years with late persistent deep 

snow. However, there have not been any 

verified wolverine detections in the Summit 

West area.

OSV use is allowed only when there is 

adequate snow cover to prevent disruption 

to subnivean habitat that is important to prey 

species for the marten, wolverine, or other 

sensitive forest carnivores.

• Marten Den Sites (SNFPA ROD - S&G 

89). Mitigate impacts where there is 

documented evidence of disturbance to 

the den site from existing recreation, offhighway vehicle route, trail, and road uses 

(including road maintenance). Evaluate 

proposals for new roads, trails, off 

highway vehicle routes, and recreation 

and other developments for their potential 

to disturb den sites. 

• Wolverine Detections (SNFPA S&G 32): 

When verified (wolverine) sightings occur, 

conduct an analysis to determine if 

activities within 5 miles of the detection 

have a potential to affect the species. If 

necessary, apply a limited operating 

period from January 1 to June 30 to avoid 

adverse impacts to potential breeding.

Evaluate activities for a 2-year period for 

detections not associated with a den site.
Over-snow Vehicle Use Designation

Tahoe National Forest

100

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, PCT, 

Wilderness, Wild & Scenic Rivers, 

ski areas (cross-country, downhill)?

Yes. There is a potential for conflicts between 

motorized and non-motorized winter 

recreationists near the Pacific Crest trail

(generally along the Area’s eastern edge), 

Onion Valley Experimental Forest, Royal 

Gorge ski area, the Granite Chief Wilderness 

and the North Fork American River Wild and 

Scenic corridor. The winter trailhead at Donner 

Summit on Interstate 80 is the most popular 

way to access the PCT in the wintertime for 

those wishing to travel either north or south on 

the Trail in the wintertime.

OSV use would largely not be designated in 

areas adjacent to the PCT in this Area 

(although an area that lies below the PCT to 

the east in the Truckee OSV Area would be 

designated for OSV use). OSV use would 

not be designated in the Onion Valley 

Experimental Forest or Lyon Peak Needle 

Lake RNA. Motorized use is prohibited in the

Granite Chief Wilderness and North Fork 

American River Wild and Scenic corridor. ; 

Signing, field map displays; winter patrolling 

and education would be used to inform 

winter recreation users about designated 

OSV use in and around the Summit West 

Area. 

Winter use (cross-country skiing and 

snowshoeing) [on the PCT] should be 

accommodated where practical and 

feasible” (USDA Forest Service 1982). No 

designated OSV crossings of the PCT are 

proposed in the Summit West Area. Areas 

adjacent to the PCT where noise conflicts 

have been an issue would not be designated 

for OSV use. Areas not designated for OSV 

use extend south in this Area (and north in 

the Donner Summit Area) along the PCT 

from the Donner Summit Winter Trailhead at 

Interstate 80 to accommodate the distances 

non-motorized winter recreationists would 

generally travel on a day-trip from the 

Interstate 80 Trailhead.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

101

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of 

neighboring Federal 

lands

Does the area abut a wilderness 

area or National Park managed by 

other agencies?

No.

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? If so, 

does this affect safety and winter 

management of this area?

No

Does this area cross or contain 

plowed roads allowing vehicle use?

Are road crossings allowed by 

OSVs?

Yes. Road crossings allowed by OSV’s at right 

angles. There are no designated snow trails 

over underlying Forest Service roads that 

would cross any plowed roads.

OSV users that desire to cross plowed roads 

would decide where it is safe to cross.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands.

Does this area receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles 

(timber sleds, ATVs, UTVs, 4x4s, snow 

tractors) has been low-medium in this area, 

but is expected to increase overtime as their 

popularity increases.

Experience shows there is adequate width 

for combined use of the snow-trails and 

open areas.
Over-snow Vehicle Use Designation

Tahoe National Forest

102

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and communities? 

Is the area adjacent to recreation 

residences used during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the community?

Yes.

No.

Signing and designate OSV use areas on 

the Over Snow Vehicle Use Map (OSVUM, 

free to public).
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

103

Truckee Area

This approximately 34,446-acre area includes the town of Truckee and the Highway 80, 89, and 267 corridors. The Area encompasses 

scattered National Forest System lands. The Sawtooth Trail is groomed once/year for the “Great Ski Race” (a permitted commercial event). 

The Truckee Area includes the Pole Creek drainage, heavily used by non-motorized users, within the Forest Plan’s Pole Management Area 

(MA #70): this drainage, along with Deep and Silver creek drainages, is not designated for OSV use (LRMP, pg. V- 376). The popular 

Bradley Hut and sections of the Pacific Crest Trail (PCT) are located within this Area. The Truckee Area also includes the Sagehen 

Experimental Forest; the Sagehen Station Management Area (MA #43) is not designated for OSV use (LRMP, pg. V-258). On its southern 

end, the Truckee Area abuts the Granite Chief Wilderness. The Truckee Area contains three major ski resorts (Squaw Valley, Alpine 

Meadows, and North Star), and other smaller ski resorts.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water 

quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with OSV 

use?

Yes, there is potential for impacts from OSV 

use. Snow depth and coverage can vary 

considerably, especially in the spring and fall.

OSV use can cause rutting on underlying 

roads and trails, soil disturbance to 

streambanks at crossings and in areas 

without adequate snow cover.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to 

soils and vegetation, which will protect water 

quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the US Fish and 

Wildlife Service. This area also contains 

sensitive riparian areas. If OSV use occurs 

when snow depth and density are inadequate 

(i.e. during the shoulder seasons), OSV use 

can result in compaction of snow, crushing 

and loss of meadow/riparian plants and soil, 

hence, potentially causing damage and 

degradation to sensitive meadow/riparian 

areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation. 

Include public education/information on the 

OSVUM to discourage OSV use in meadows 

when snow depths are inadequate for 

resource protection.

Does the trail or area drain into a 

303(d)-listed waterbody?

Yes. The Truckee River is listed as impaired 

due to sediment.

Sediment contribution from OSV trails would 

be minimized when there is adequate snow 

depth to prevent disturbance to bare soil.

Does the area have a hydraulic 

mine site or sites?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

104

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

soil and water 

quality.(continued)

Could OSV use affect a municipal 

water system comprised of a 

small reservoir that goes directly 

into a local community water 

supply?

No

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could 

potentially be affected by OSV 

use? 

Yes, there are several Sensitive and 

Watchlist plant species occurrences in the 

Truckee OSV area.

If OSV use occurs when snow depth and 

density are inadequate (i.e. during the 

shoulder seasons), OSV use can result in 

compaction of snow, crushing of Sensitive 

and/or Watchlist plants, potentially causing 

direct mortality and/or loss of vigor and 

productivity. 

Sensitive plant occurrences within the Truckee 

area will be protected by allowing OSV use to 

occur only when there is adequate snow depth 

to prevent damage to plants and prevent soil 

compaction.

Does the trail or area include 

designated botanical areas (SIA, 

RNA)?

Yes, the Truckee Area contains three special 

interest areas (SIAs): Glacier Meadow 

Geologic Area (SIA), the Sagehen 

Headwaters SIA, and the Mason Fen 

Botanical Area (SIA).

The Forest Plan does not designate the 

Glacier Meadow or Mason Fen SIAs for OSV 

use (LRMP, pp. V-257, V-258, and V-385). 

The Sagehen Headwaters SIA is not 

designated for OSV use under the proposed 

action.

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize 

harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, there are 12 northern goshawk PACs 

and 7 California spotted owl PACs in the 

Truckee OSV area.

Spotted owls and goshawks initiate breeding 

in February and March when OSV 

disturbance during breeding season initiation 

has the potential to disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61) would apply to 

goshawk or spotted owl PACs where OSV use 

is allowed: Mitigate impacts where there is 

documented evidence of disturbance to the 

nest site from existing recreation, off highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate developments 

for their potential to disturb nest site.

Implement a breeding season Limited 

Operating Period if there is documented 

evidence of disturbance to nest site from the 

above as follows: California spotted owl –

March 1 through August 15 and northern

goshawk – February 15 through September 

15.

Does the trail or area encompass 

sandhill crane nest sites?

No.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

105

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize 

harassment of 

wildlife.(continued)

Does the trail or area encompass 

known bald eagle nest sites?

There is a known bald eagle nest site near 

Donner Lake on private land, however, there 

are no known bald eagle nest sites on NFS 

lands designated for OSV use under the 

proposed action.

N/A

Does the trail or area contain key 

deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. An occupied Lahontan cutthroat trout 

stream occurs within Pole Creek.

There is one recent and several historic 

SNYLF detections and SNYLF suitable 

habitat within the Truckee area. A small 

portion of SNYLF critical habitat occurs on 

the western edge of the Truckee OSV area.

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if 

use occurs when snow depth and density are 

inadequate as evidenced by exposed soil 

and open waterways. OSV use in areas with 

exposed soil can lead to reduced water 

quality from soil erosion and sedimentation. 

The occupied LCT stream at Pole Creek is 

located in an area not designated for OSV use 

in the Forest Plan (LRMP, pg. V-376).

Aquatic habitat in the Truckee area would be 

protected by only allowing OSV use to occur 

when there is adequate snow depth to prevent 

damage to aquatic habitats, including soil, 

water and riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

Yes, several marten detections are known in 

the Truckee Area, but den sites have not 

been identified.

Additionally, there is limited suitable 

wolverine habitat in the westernmost portion 

in the higher elevations of the Truckee area.

However a single verified male wolverine was 

detected in the Sagehen area in 2007, but no 

den sites have been identified.

OSV use is allowed only when there is 

adequate snow cover to prevent disruption to 

subnivean habitat that is important to prey 

species for the marten.

Marten Den Sites (SNFPA ROD - S&G 89). 

Mitigate impacts where there is documented 

evidence of disturbance to the den site from 

existing recreation, off-highway vehicle route, 

trail, and road uses (including road 

maintenance). Evaluate proposals for new 

roads, trails, off highway vehicle routes, and 

recreation and other developments for their 

potential to disturb den sites.
Over-snow Vehicle Use Designation

Tahoe National Forest

106

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Verified Wolverine Detections (SNFPA ROD 

S&G 32): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor 

vehicle use and 

existing or proposed 

recreational uses of 

NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas (crosscountry, downhill), and/or IRAs?

Yes: There is a potential for conflicts between 

motorized and non-motorized winter 

recreationists near the many outlying 

communities of Truckee, the Granite Chief 

Wilderness, and the Pacific Crest National 

Scenic Trail (generally along the Area’s 

western boundary). The winter trailhead at 

Donner Summit on Interstate 80 is the most 

popular way to access the PCT going either 

north or south in the wintertime. A segment of 

the Sagehen Creek Recommended Wild and 

Scenic River lies within the within this area in 

the Sagehen Experimental Forest. 

OSV use would largely not be designated in 

areas adjacent to the PCT in this Area; 

however, an area that lies below the PCT near 

the western boundary of the Truckee OSV 

Area would be designated for OSV use. 

Signing; winter patrolling of areas not 

designated for OSV use; and education would 

be used to inform winter recreation users 

about designated OSV use in and around the 

Truckee OSV Area. 

“Winter use (cross-country skiing and 

snowshoeing) [on the PCT] should be 

accommodated where practical and feasible”

(USDA Forest Service 1982). No designated 

OSV crossings of the PCT are proposed in the 

Truckee Area. Areas adjacent to the PCT 

where noise conflicts have been an issue

would not be designated for OSV use. Areas 

not designated for OSV use extend along the 

PCT south from the Donner Summit Winter 

Trailhead at Interstate 80 to accommodate the 

distances non-motorized winter recreationists 

would generally travel on a day-trip from the 

Interstate 80 Trailhead.

The Sagehen Experimental Forest (which 

includes Sagehen Creek) is not designated for 

OSV use under the proposed action. 
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

107

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Conflicts between 

motor vehicle use 

and existing or 

Does the area abut a wilderness 

area or National Park managed 

by other agencies?

No

proposed 

recreational uses of 

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? If

so, does this affect safety and 

winter management of this area?

No

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

Yes, many locations. OSVs may cross at 90 

degrees.

Signing, education, Over-Snow Vehicle Use 

maps.

OSV users that desire to cross plowed roads 

would decide where it is safe to cross.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal

lands.

Does this area receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this potentially 

creating conflicts?

Yes. Use by tracked over-snow vehicles 

(timber sleds, ATVs, UTVs, 4x4s, snow 

tractors) has been low-medium in this area, 

but is expected to increase overtime as their 

popularity increases.

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated snowtrail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Over-snow Vehicle Use Designation

Tahoe National Forest

108

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider 

compatibility of 

motor vehicle use 

with existing 

conditions in 

populated areas, 

taking into account 

sound, emissions, 

and other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the community?

Yes. Private landowners use both motorized 

and non-motorized recreation.

Yes, recreation residences in the Truckee 

River canyon.

Signing, education, Over-Snow Vehicle Use 

maps.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

109

Yuba NE Area

This approximately 83,273-acre area located in the northern edge of the Tahoe National Forest. The area contains the communities of 

Downieville and Sierra City. Elevations in the area range between 2,500 to 9,000 feet. The higher elevations (above 4,500 feet) and eastern 

parts of this area receive sufficient snow to attract over-snow vehicle users. Over-snow vehicle users travel on groomed trails as well as crosscountry. Over-snow vehicle users travel to higher elevations and eastern part of this area to ride in significant numbers.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to 

soil and water from OSV use?

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from OSV 

use. Snow depth and coverage can vary 

considerably, especially in the spring and fall.

OSV use can cause rutting on underlying 

roads and trails, soil disturbance to 

streambanks at crossings and in areas 

without adequate snow cover.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to 

soils and vegetation, which will protect water 

quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish and 

Wildlife Service National Wetlands Inventory.

This area also contains sensitive riparian 

areas. If OSV use occurs when snow depth 

and density are inadequate (i.e. during the 

shoulder seasons), OSV use can result in 

compaction of snow, crushing and loss of 

meadow/riparian plants and soil, hence, 

potentially causing damage and degradation 

to sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to 

prevent damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows 

when snow depths are inadequate for 

resource protection.

Does the trail or area drain into a 

303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

Yes. The soils on hydraulic mine sites are 

often contaminated with mercury. Mercury 

attaches to soil particles and can be carried 

into nearby water bodies during rainstorms 

and snowmelt runoff.

Many of the hydraulic mine sites have dense 

brush which discourage OSV use. Adequate 

snow cover would minimize mercury 

contaminated sediment from being 

transported to nearby waterbodies.
Over-snow Vehicle Use Designation

Tahoe National Forest

110

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage to 

soil and water quality. 

(continued)

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes. There are several occurrences of 

Sensitive plants and a Watchlist plant in the 

Yuba NE area: 

Sensitive plants – Bruchia bolanderi, 

Epilobium howellii, Lewisia cantelovii, 

Lewisia kelloggii ssp. hutchisonii, Lewisia 

eastwoodiae var. kelloggii, Meesia uliginosa

Watchlist plants – Asplenium trichomanesramosum, Corydalis caseana ssp. caseana, 

Meesia triquetra, Sphagnum, Stellaria obtuse

If OSV use occurs when snow depth and 

density are inadequate (i.e. during the 

shoulder seasons), OSV use can result in 

compaction of snow, crushing of Sensitive 

and/or Watchlist plants, potentially causing 

direct mortality and/or loss of vigor and 

productivity.

Sensitive plant occurrences within the Yuba 

NE area will be protected by allowing OSV 

use to occur only when there is adequate 

snow depth to prevent damage to plants and 

prevent soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No.

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, there are 20 northern goshawk PACs 

and 30 California spotted owl PACs in the 

Yuba NE area. 

Generally, goshawks and spotted owls 

initiate breeding in February and March, 

respectively. OSV use during the breeding 

season has the potential to disturb nesting 

owls and goshawks and could potentially 

disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate 

impacts where there is documented evidence 

of disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season limited 

operating period if there is documented 

evidence of disturbance to nest site from the 

above as follows: California spotted owl –

March 1 through August 15 and northern

goshawk – February 15 through September 

15.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

111

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Minimize harassment 

of wildlife.(continued)

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

Yes. The Yuba NE area contains deer winter 

range along the North Yuba River. 

The Tahoe Forest Plan does not designate 

the Forty-Niner Management Area (MA #13), 

which lies along the North Yuba River 

corridor, for cross-country OSV use (LRMP, 

pg. V-129). No designated OSV trails are 

proposed in deer winter range along the North 

Yuba corridor. Therefore, OSV use would not 

impact deer winter range along the Yuba 

River corridor.

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. 

• There are several detections of SNYL frog 

and designated critical habitat in the Yuba 

NE area. 

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if 

use occurs when snow depth and density are 

inadequate as evidenced by exposed soil 

and open waterways. OSV use in areas with 

exposed soil can lead to reduced water 

quality from soil erosion and sedimentation.

TES aquatic habitat in the North Yuba NE 

area would be protected by only allowing OSV 

use to occur when there is adequate snow 

depth to prevent damage to aquatic habitats 

including, soil, water and riparian vegetation
Over-snow Vehicle Use Designation

Tahoe National Forest

112

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.(continued)

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes. There are known marten detections in 

the Yuba NE area. 

OSV use has the potential to impact 

subnivean habitat used by marten and their 

prey species, such as small mammals. OSV 

use can result in snow compaction and loss 

of subnivean habitat particularly when snow 

depth is low or inadequate.

OSV use is allowed only when there is 

adequate snow depth to prevent disruption to 

subnivean habitat that is important to prey 

species for the marten, wolverine, or other 

sensitive forest carnivores.

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg.62): Mitigate impacts where there is 

documented evidence of disturbance to

the den site from existing recreation, offhighway vehicle route, trail, and road uses 

(including road maintenance). Evaluate 

proposals for new roads, trails, off highway 

vehicle routes, and recreation and other 

developments for their potential to disturb

den sites.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor 

vehicle use and 

existing or proposed 

recreational uses of 

NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill), and/or 

IRAs?

Yes: there is the potential for conflicts 

between motorized and non-motorized 

recreationists. 

The PCT traverses the Yuba NE Area from 

south of Highway 49, east of Sierra City, and 

along the boundary with the Plumas NF and 

then continues off the Tahoe NF on its 

northern boundary. The most likely areas of 

potential future conflict along the PCT are 

near where the PCT crosses Highway 49 

(both north and south) east of Sierra City. 

These areas are where winter non-motorized 

recreationists might access the PCT and 

could generally travel on a day-trip from the 

Highway crossing. (Currently, in the winter 

there are typically no suitable places to park

near the PCT crossing of the Highway due to 

snow berms, however this could possibly

change with how the highway is plowed.) The 

PCT along the border of Tahoe NF and 

Plumas NF (Gold Lakes Basin/Gold Valley) 

has a low likelihood for potential conflicts due 

to the winter recreation use patterns in this 

area. Non-motorized users typically cross the

“Winter use (cross-country skiing and 

snowshoeing) [on the PCT] should be 

accommodated where practical and feasible” 

(USDA Forest Service 1982). Motorized use 

is not permitted on the PCT. Eleven 

designated OSV crossings of the PCT are 

proposed in the Yuba NE Area. Designated 

crossings of the PCT for OSVs would be 

designated and shown on the Over-Snow 

Vehicle Use map (OSVUM). All the 

designated OSV crossings in the Yuba NE 

Area are long distances from winter trailhead 

access and winter non-motorized recreational 

use on the PCT is limited in this Area. To 

mitigate OSV noise in areas with the most 

future potential for conflict along the PCT, 

OSV use would not be designated near the 

areas where the PCT crosses Highway 49 

(both north and south) east of Sierra City.

The Haskell Peak Trail would be managed as 

an OSV designated trail where it bisects the 

winter non-motorized area (located in the 

easternmost portion of the Yuba NE Area). 
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

113

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize conflicts 

between motor 

vehicle use and 

existing or proposed 

recreational uses of 

NFS lands 

(continued)

PCT (rather than traverse along the Trail) in 

order get the desired recreation experience 

of skiing downhill in this area. This area has 

been, and continues to be, popular with OSV 

users and skiers. The majority of winter 

recreationists in the Gold Lakes Basin/Gold 

Valley area are OSV users. Backcountry 

skiers who access this area typically use a 

snowmobile to reach the high country. There 

have not been any reported conflicts 

between motorized users in this area with 

non-motorized users on the PCT looking for 

solitude or quite recreation.

There is the potential for conflicts between 

OSV use in the Yuba NE Area and nonmotorized recreationists within an area 

popular with non-motorized users located 

north of the Yuba Pass Winter Trailhead (a 

state Sno-Park). There are three designated 

cross-country ski trails within the area.

The Yuba NE Area includes the East Yuba 

and a portion of the West Yuba Inventoried 

Roadless Areas. However, these areas are 

sufficiently far from a trailhead that it receives 

limited or little non-motorized use during the 

winter.

The Yuba NE Area includes a segment of the 

Canyon Creek Recommended Wild and 

Scenic River. However, this area is 

sufficiently far from a trailhead that it receives 

limited or little non-motorized use during the 

winter.

The southern boundary of Yuba NE Area is 

bordered by the North Yuba Recommended 

Wild and Scenic River.

This easternmost portion of the Area would 

not be designated for OSV use. “No 

Motorized Use” signs would be posted on the 

borders of the winter non-motorized area. The 

Haskell Peak Trail would be signed as a 

shared trail with winter non-motorized users 

for the extent that it borders and bisects the 

winter non-motorized area. This strategy has 

been used in this area for decades with a high 

rate of success, with only a few motorized 

vehicle incursions into the non-motorized area 

each year despite the heavy use.

The corridor for the North Yuba 

Recommended Wild and Scenic River is not 

designated for cross-country OSV use in the 

existing Forest Plan (LRMP, pg. V-129). This 

corridor is not designated for OSV use under 

the proposed action.
Over-snow Vehicle Use Designation

Tahoe National Forest

114

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Conflicts between 

motor vehicle use and 

existing or proposed 

Does the area abut a wilderness 

area or National Park managed 

by other agencies?

No

recreational uses of 

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

Yes. The Yuba Northeast Area abuts the 

Plumas National Forest’s Lakes Basin winter 

non-motorized area, which has the potential 

to cause impacts to non-motorized 

recreationists in the Lakes Basin seeking a 

quiet experience.

“No Motorized Use” signs will be posted on 

the ridgeline that borders the two areas. 

Does the area abut a developed 

recreation site on neighboring 

Federal lands?

No

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No.

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

Yes. On its southern boundary the Yuba 

Northeast Area borders State Highway 49.

Crossings of the highway is allowed by 

tracked winter vehicles, which commonly 

occur at Yuba Pass and Bassetts.

There is adequate sight distances at Yuba 

Pass and Bassetts crossings in both 

directions of the highway to allow safe 

crossing by tracked motorized vehicles.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal

lands. 

Does this area receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow vehicles over 

50 inches is not common, but is expected to 

increase over time.

Over-snow vehicles larger than 50 inches 

wide would not be allowed off the designated 

snow-trail system. Experience has shown 

there is adequate width for combined use of 

the snow-trail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

115

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing 

conditions in 

populated areas, 

taking into account 

sound, emissions, 

and other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

This area includes the towns of Goodyears 

Bar (a portion), Downieville and Sierra City. 

Due to their elevation, snow of sufficient 

depth to utilize over-snow vehicles is rare in 

or around the towns of Goodyears Bar 

(2,700 feet) and Downieville (3,000 feet). The 

residents that live year-round in these rural 

communities are compatible with motorized 

uses of all types.

Residents that live year-round in the town of 

Sierra City are accustomed to living in snow 

in the winter, many of whom own over-snow 

vehicles. The characteristics of this 

community are compatible with winter 

motorized uses.

The Yuba NE Area includes the Loganville, 

Wild Plum, Carvin, Haskell, Sierra, and Clark 

Station recreation residences.

The lands immediately surrounding the 

residences in the towns of Goodyears Bar, 

Downieville and Sierra City are private and 

not subject to Forest Service jurisdiction.

Winter use of these recreational residences is 

uncommon due to the amount of snow 

needed to be removed to access the cabins.

The winter use of these that does occur is 

most frequently done by users who access 

the cabins via over-snow motorized vehicles, 

who also use the vehicles for recreation.

There have been no complaints to the Forest 

Service from recreation residence owners 

about over-snow vehicle users. 
Over-snow Vehicle Use Designation

Tahoe National Forest

116

Yuba NW Area

This approximately 43,255-acre area is located in the northwest corner of the Tahoe National Forest. The area contains the small community 

of Goodyears Bar. The southern half of the area is under 4,500 foot elevation and rarely receives sufficient snow to attract over-snow vehicle 

users, but the northern half is mostly over 4,500 foot elevation with roads and terrain suitable to over-snow vehicles users. If the narrow CalIda road that climbs steeply out of Indian Valley is not icy, over-snow vehicles users will travel to this area to ride, but not in large numbers.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil 

during the times OSV use 

could occur? Is there potential 

for soil disturbance associated 

with OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected 

by allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to soils and vegetation, which will 

protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (i.e. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants and 

soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will 

be protected by allowing OSV use to occur 

only when there is adequate snow depth to 

prevent damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in 

meadows when snow depths are 

inadequate for resource protection.

Does the trail or area drain into 

a 303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

No

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

117

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes. There are several occurrences of Sensitive 

and Watchlist plant species in the Yuba NW 

area. 

Sensitive: Botrychium crenulatum, Cypripedium 

fasciculatum, Lewisia cantelovii, Lewisia kelloggii

ssp. hutchisonii, Lupinus dalesiae

Watchlist: Erigeron petrophilus var. sierrensis, 

Piperia colemanii

If OSV use occurs when snow depth and density 

are inadequate (i.e. during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Sensitive plants and soil, 

potentially causing direct mortality and/or loss of 

vigor and productivity.

Sensitive plant occurrences within the 

Yuba NW area will be protected by 

allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to plants and prevent soil 

compaction.

Would the trail or area include 

designated botanical areas 

(SIA, RNA)?

Yes. The Devils Postpile geologic site occurs in 

the Yuba NW area. 

The Tahoe Forest Plan does not designate 

the Devils Postpile Management Area (MA 

#14) for OSV use (Tahoe LRMP, pg. V133).

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest 

sites?

Yes, there are 14 California spotted owl and 8 

northern goshawk PACs in the Yuba NW area

Spotted owls and goshawks initiate breeding in 

February and March when OSV disturbance 

during breeding season initiation has the 

potential to disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate 

impacts where there is documented 

evidence of disturbance to the nest site 

from existing recreation, off highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate developments 

for their potential to disturb nest site.

Implement a breeding season Limited 

Operating Period if there is documented 

evidence of disturbance to nest site from 

the above as follows: California spotted owl 

– March 1 through August 15 and northern

goshawk – February 15 through September 

15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

118

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Minimize harassment 

of wildlife. (continued)

Does the trail or area contain 

key deer winter range?

Yes, there is a limited amount of deer winter 

range along the North Yuba River corridor.

The Tahoe Forest Plan does not designate 

the Forty-Niner Management Area (MA 

#13), which lies along the North Yuba River 

corridor, for cross-country OSV use (LRMP, 

pg. V-129). No designated OSV trails are 

proposed in deer winter range in the North 

Yuba corridor. Therefore, OSV use would 

not impact deer winter range along the 

North Yuba River corridor.

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. Several occurrences of Foothill yellowlegged frog are known in the Yuba NW area, 

however the majority of sightings are in the North 

Yuba River.

There is suitable SNYLF habitat widely 

distributed across the Yuba NW area above 

4,000 feet elevation.

There is a western pond turtle detection in the 

Yuba NW area. 

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

TES aquatic habitat would be protected by 

only allowing OSV use to occur when there 

is adequate snow depth to prevent damage 

to aquatic habitats including, soil, water 

and riparian vegetation.

No designated OSV trails are proposed in 

deer winter range in the North Yuba 

corridor (LRMP, pg. V-129). Therefore, 

OSV use would not impact FYLF along the 

North Yuba River corridor.

Does the trail or area contain 

habitat for marten, wolverine, 

or other sensitive forest 

carnivores?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

119

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this trail or 

area cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, Wilderness, 

Wild & Scenic Rivers, ski areas 

(cross-country, downhill)?

A segment of the North Yuba Recommended 

Wild and Scenic River lies within the Yuba 

Northwest Area. In addition, the northern 

boundary of this Area is bordered by the Canyon 

Creek Recommended Wild and Scenic River.

No potential for conflicts exists along the North 

Yuba Recommended Wild and Scenic River 

corridor because the area does not receive snow 

due to its low elevation. Canyon Creek is located 

in a steep and narrow canyon and does not 

received OSV use within a quarter mile of the 

Creek.

The Yuba NW Area contains the western portion 

of the West Yuba Inventoried Roadless Area 

(IRA). The western portion of the West Yuba IRA 

receives little or no non-motorized use because it 

is located far from a winter trailhead.

The corridor for the North Yuba 

Recommended Wild and Scenic River is 

not designated for cross-country OSV use 

in the existing Forest Plan (LRMP, pg. V129). This corridor is not designated for 

OSV use under the proposed action.

Conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of 

neighboring Federal 

lands

Does the trail or area abut a 

wilderness area or National 

Park managed by other 

agencies?

No

Does the trail or area abut a 

non-motorized area on 

adjacent national forest or 

other Federal lands?

No

Does the trail or area abut a 

developed recreation site on 

neighboring Federal lands?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

120

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? 

If so, does this affect safety 

and winter management of this 

area?

Yes. The paved portions of the 25 and 35 roads 

allow for wheeled traffic in winter. Due to the 

infrequent use of either tracked or wheeled 

motorized vehicles in winter, there is little 

opportunity for conflict on these roads.

If wheeled/tracked vehicle conflict arises in 

this area, the district would monitor the 

situation and may install share the road 

signs.

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings 

allowed by OSVs?

Yes. Occasionally Sierra County Public Works 

will plow the first 5 miles to a private inholding on 

the Cal-Ida Road.

No mitigation is needed because the oversnow vehicles users will travel to the 

snowline where the plowing stops and 

travel away from the plowed road.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal

lands.

Does this area receive use by 

both tracked over-snow 

vehicles under 50 inches wide

and over 50 inches wide? Is 

this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles over 50 

inches is not common, but is expected to 

increase over time.

Over-snow vehicles larger than 50 inches 

wide would not be allowed off the 

designated snow-trail system. Experience 

has shown that there is adequate width for 

combined use of the snow-trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing 

conditions in 

populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

This area includes a portion of the community of 

Goodyears Bar.

The area includes the Ramshorn recreation 

residence, which is under 4,500 feet and rarely 

receives sufficient snow to attract over-snow 

vehicles users.

Goodyears Bar and the Ramshorn 

Recreation Residence Tract are both under 

4,500 feet and rarely receive sufficient 

snow to attract over-snow vehicle users
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

121

Yuba South Area

This approximately 20,657-acre area is located approximately 5 miles northeast of Nevada City/Grass Valley and ends near the Skillman 

Campground along Highway 20 at its southeast corner. The area borders a portion of Malakoff Diggings State Park and the small community 

of Washington and numerous private inholdings. Most of the area is under 4,500 feet and rarely receives sufficient snow to attract over-snow 

vehicle users, but the northern portion is mostly over 4,500 feet, with roads and terrain suitable to over-snow vehicle use. On the rare times 

there is snow, the over-snow vehicle users will travel through the Yuba South Area on Forest Road 21 to get to areas with more sustainable 

snow depth.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil 

during the times OSV use 

could occur? Is there potential 

for soil disturbance associated 

with OSV use?

Yes, there is potential for impacts from OSV 

use. Snow depth and density can vary 

considerably, especially in the spring and fall.

OSV use can cause rutting on underlying roads 

and trails, soil disturbance to streambanks at 

crossings and in areas without adequate snow 

depth and density.

Soil and water resources will be protected 

by allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to soils and vegetation, which will 

protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (i.e. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants 

and soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas. 

Meadows, wetlands and riparian areas will 

be protected by allowing OSV use to occur 

only when there is adequate snow depth to 

prevent damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in 

meadows when snow depths are inadequate 

for resource protection.

Does the trail or area drain into 

a 303(d)-listed waterbody?

No

Does the area have a 

hydraulic mine site or sites?

Yes. The soils on hydraulic mine sites are often 

contaminated with mercury. Mercury attaches to 

soil particles and can be carried into nearby 

water bodies during rainstorms and snowmelt 

runoff.

Many of the hydraulic mine sites have dense 

brush which discourage OSV use. Adequate 

snow cover would minimize mercury 

contaminated sediment from being 

transported to nearby waterbodies.
Over-snow Vehicle Use Designation

Tahoe National Forest

122

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage to 

soil and water 

quality.(continued)

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes. There are several occurrences of Sensitive 

and Watchlist plant species in the Yuba South 

area. 

Sensitive: Cypripedium fasciculatum, Fritillaria 

eastwoodiae, Lewisia cantelovii, Lewisia 

kelloggii ssp. hutchisonii, Lupinus dalesiae

Watchlist: Allium sanbornii var. congdonii, 

Arctostaphylos mewukka ssp. truei, Cardamine 

pachystigma var. dissectifolia, Clarkia biloba 

ssp. brandegeeae, Darlingtonia californica, 

Viola cuneata

If OSV use occurs when snow depth and 

density are inadequate (i.e. during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Sensitive plants and soil, 

potentially causing direct mortality and/or loss of 

vigor and productivity.

Sensitive plant occurrences within the Yuba 

South area will be protected by allowing 

OSV use to occur only when there is 

adequate snow depth to prevent damage to 

plants and prevent soil compaction.

Would the trail or area include 

designated botanical areas 

(SIA, RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest 

sites?

Yes, there are 15 California spotted owl and 6 

northern goshawk PACs in the Yuba South area

Spotted owls and goshawks initiate breeding in 

February and March when OSV disturbance 

during breeding season initiation has the 

potential to disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate 

impacts where there is documented 

evidence of disturbance to the nest site from 

existing recreation, off highway vehicle 

route, trail, and road uses (including road 

maintenance). Evaluate developments for 

their potential to disturb nest site.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

123

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize harassment 

of wildlife.(continued)

Implement a breeding season Limited 

Operating Period if there is documented 

evidence of disturbance to nest site from the 

above as follows: California spotted owl –

March 1 through August 15 and northern 

goshawk – February 15 through September 

15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

Yes, there is key deer winter range in the Yuba 

South area. 

Key deer winter range is not designated for 

cross-country OSV use under the Forest 

Plan (LRMP, pp. V-30, V-120, and V-124) or 

the proposed action.

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. 

• The Yuba South area contains designated 

and suitable habitat for the California redlegged frog, but no known occurrences.

• Several occurrences of foothill yellowlegged frog and the western pond turtle are 

within the Yuba South area.

• There is also suitable Sierra Nevada yellowlegged frog suitable habitat above 4,000 

feet elevation, but no SNYLF detections 

within the Yuba South area. 

OSV use has the potential to disrupt and/or 

degrade TES aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate, as evidenced by exposed soil and 

open waterways. OSV use in areas with 

exposed soil can lead to reduced water quality 

from soil erosion and sedimentation.

TES aquatic habitat would be protected by 

only allowing OSV use to occur when there 

is adequate snow depth to prevent damage 

to aquatic habitats including, soil, water and 

riparian vegetation.
Over-snow Vehicle Use Designation

Tahoe National Forest

124

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats. (continued)

Does the trail or area contain 

habitat for marten, wolverine, 

or other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, 

Wilderness, Wild & Scenic 

Rivers, ski areas (crosscountry, downhill), and/or 

IRAs?

A segment of the South Yuba Recommended 

Wild and Scenic River traverses the Yuba South 

Area. However, the River corridor in this Area is 

under 4,500 feet and rarely receives sufficient 

snow to attract over-snow vehicle users.

The South Yuba Recommended Wild and 

Scenic River segment in the Yuba South 

Area is not designated for OSV use under 

the proposed action.

Conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of 

neighboring Federal 

lands

Does the area abut a 

wilderness area or National 

Park managed by other 

agencies?

No

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Does the area abut a 

developed recreation site on 

neighboring Federal lands?

No.

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this area allow wheeled 

motor vehicle use over snow? 

If so, does this affect safety 

and winter management of this 

area?

No

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings 

allowed by OSVs?

No
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

125

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal

lands.

Does this area receive use by 

both tracked over-snow 

vehicles under 50 inches wide

and over 50”wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow vehicles over 50 

inches is not common, but is expected to 

increase over time.

Over-snow vehicles larger than 50 inches 

wide would not be allowed off the 

designated snow-trail system. Experience 

has shown that there is adequate width for 

combined use of the snow-trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing 

conditions in 

populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

This area includes the town of Washington. Due 

to its relatively low elevation, snow of sufficient 

depth to utilize over-snow vehicles is rare 

adjacent to this community.

No, this area is not adjacent to recreation 

residences that are used during the winter.
Over-snow Vehicle Use Designation

Tahoe National Forest

126

Yuba West

This approximately 40,708-acre area is located on the western edge of the Tahoe National Forest. The area contains the small communities of 

Camptonville and Pike with numerous private scattered inholdings. The area is under 4,500 feet in elevation and rarely receives sufficient 

snow to attract over-snow vehicle users. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil 

during the times OSV use 

could occur? Is there potential 

for soil disturbance associated 

with OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

Soil and water resources will be protected 

by allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to soils and vegetation, which will 

protect water quality.

Minimize damage to soil 

and water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife Service 

National Wetlands Inventory. This area also 

contains sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (e.g. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants and 

soil, hence, potentially causing damage and 

degradation to sensitive meadow/riparian areas.

Meadows, wetlands and riparian areas will 

be protected by allowing OSV use to 

occur only when there is adequate snow 

depth to prevent damage to soils and 

vegetation.

Include public education/information on 

the OSVUM to discourage OSV use in 

meadows when snow depths are 

inadequate for resource protection.

Does the trail or area drain into 

a 303(d)-listed waterbody?

No

Does the area have a 

hydraulic mine site or sites?

Yes. The soils on hydraulic mine sites are often 

contaminated with mercury. Mercury attaches to 

soil particles and can be carried into nearby water 

bodies during rainstorms and snowmelt runoff.

Many of the hydraulic mine sites have 

dense brush, which discourages OSV use 

in these areas. Adequate snow cover 

would minimize mercury contaminated 

sediment from being transported to 

nearby waterbodies
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

127

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage to soil 

and water 

quality.(continued)

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes. There are several occurrences of Sensitive 

and Watchlist plant species in the Yuba West 

area. 

Sensitive: Cypripedium fasciculatum, Lewisia 

kelloggii ssp. hutchisonii, Lupinus dalesiae, 

Phaecollybia olivacea

Watchlist: Cardamine pachystigma var. 

dissectifolia, Clarkia biloba ssp. brandegeeae, 

Darlingtonia californica, Lillium humboldtii ssp. 

humboldtii, Viola cuneata

If OSV use occurs when snow depth and density 

are inadequate (e.g., during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Sensitive and/or Watchlist 

plants, potentially causing direct mortality and/or 

loss of vigor and productivity.

Sensitive plant occurrences within the 

Yuba West area will be protected by 

allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to plants and prevent soil 

compaction.

Would the trail or area include 

designated botanical areas 

(SIA, RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest 

sites?

Yes, there are 24 California spotted owl and 6 

northern goshawk PACs in the Yuba West area

Spotted owls and goshawks initiate breeding in 

February and March when OSV disturbance 

during breeding season initiation has the potential 

to disrupt nesting activities.

LRMP S&G 82. Mitigate impacts where 

there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, 

and road uses (including road 

maintenance). Evaluate developments for 

their potential to disturb nest site.

Implement a breeding season Limited 

Operating Period if there is documented 

evidence of disturbance to nest site from 

the above as follows: California spotted 

owl – March 1 through August 15 and 

northern goshawk – February 15 through 

September 15.
Over-snow Vehicle Use Designation

Tahoe National Forest

128

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

Yes. OSVs can disrupt bald eagle nest sites 

during the nesting season. The bald eagle nest 

sites in the Yuba West Area are located near 

Bullard’s Bar Reservoir.

OSV use will not be designated near 

Bullards Bar in the proposed action and it 

is not designated for use in the Forest 

Plan.

Does the trail or area contain 

key deer winter range?

Yes, there is key deer winter range in the Yuba 

West area. 

OSV use will not be designated near 

Bullards Bar in the proposed action and it 

is not designated for use in the Forest 

Plan.

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. 

• The Yuba West area contains suitable habitat 

for the California red-legged frog, but no 

known occurrences.

• Several occurrences of foothill yellow-legged 

frog and the western pond turtle are within the 

Yuba West area.

• There is a very limited amount of Sierra 

Nevada yellow-legged frog suitable habitat 

above 4,000 feet elevation on the eastern 

boundary, but no SNYLF detections within the 

Yuba South area. 

OSV use has the potential to disrupt and/or 

degrade TES aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

TES aquatic habitat would be protected by 

only allowing OSV use to occur when 

there is adequate snow depth to prevent 

damage to aquatic habitats including, soil, 

water and riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, 

or other sensitive forest 

carnivores?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

129

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this area 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, 

Wilderness, Wild & Scenic 

Rivers, ski areas (crosscountry, downhill), and/or 

IRAs?

The northern boundary of the Yuba West Area is 

bordered by the North Yuba Recommended Wild 

and Scenic River (relatively short recreation and 

scenic river segments). However, the Area is 

under 4,500 feet and rarely receives sufficient 

snow to attract over-snow vehicle users.

The corridor for the North Yuba 

Recommended Wild and Scenic River is 

not designated for cross-country OSV use 

in the existing Forest Plan (LRMP, pg. V129). This corridor will not be designated 

for OSV use under the proposed action.

Conflicts between motor 

vehicle use and existing 

or proposed 

recreational uses of 

Does the area abut a 

wilderness area or National 

Park managed by other 

agencies?

No

neighboring Federal 

lands

Does the area abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Does the area abut a 

developed recreation site on 

neighboring Federal lands?

No .

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different classes 

of motor vehicle uses of 

NFS lands. 

Does this area allow wheeled 

motor vehicle use over snow? 

If so, does this affect safety 

and winter management of this 

area?

No.

Does this area cross or contain 

plowed roads allowing vehicle 

use? Are road crossings 

allowed by OSVs?

No

Minimize conflicts 

among different classes 

of motor vehicle uses of 

other neighboring 

Federal lands.

Does this area receive use by 

both tracked over-snow 

vehicles under 50 inches wide

and over 50”wide? Is this 

potentially creating conflicts?

No.
Over-snow Vehicle Use Designation

Tahoe National Forest

130

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the area adjacent to 

neighborhoods and 

communities? 

Is the area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this area 

compatible with distinct 

characteristics of the 

community?

Yes. Camptonville and Pike are included in this 

area. The area is under 4,500 feet in elevation 

and rarely receives sufficient snow to attract oversnow vehicle users.

No.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

131

Appendix F. Mitigations to Address the Minimization Criteria in the Travel Regulations for 

Trails Designated for OSV Use

American Hill Trail (SNO-12E16)

This 9.5-mile designated OSV trail, which is available for grooming, overlays the Forest Service 13 Road. This trail provides a moderate length 

loop opportunity with the Foresthill Divide OSV Trail (Sno-12E15), to which it connects.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows 

when snow depths are inadequate for resource 

protection.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

132

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to soil 

and water 

quality.(continued)

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes. The American Hill OSV Trail 

passes through a Sensitive plant 

occurrence -Erigeron miser

If OSV use occurs when snow depth 

and density are inadequate (e.g. 

during the shoulder seasons), OSV 

use can result in compaction of snow, 

crushing of Sensitive plants, potentially 

causing direct mortality and/or loss of 

vigor and productivity.

Sensitive plants occurrences within the 

American Hill OSV Trail will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to 

plants and prevent soil compaction.

Would the trail or area include 

designated botanical areas (SIA,

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No N/A

Minimize harassment of 

wildlife.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

133

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. The American Hill OSV Trail 

crosses Sierra Nevada yellow-legged 

frog (SNYLF) suitable habitat above 

4,000 feet, but not occupied habitat.

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

SNYLF suitable habitat area would be protected 

by only allowing OSV use to occur when there is 

adequate snow depth to prevent damage to 

aquatic habitats including, soil, water and 

riparian vegetation along the American Hill Trail. 

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No. Monitoring has shown that this trail 

is far enough away from the China 

Wall Winter Trailhead that nonmotorized winter use of the trail is rare.

N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

of neighboring Federal 

lands

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

134

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands.

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles over 50 inches is not 

common, but is expected to increase 

over time.

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

The trail traverses several parcels of 

private property, which contain a few 

residences. The designated OSV trail 

crosses the private land over the 

Forest Service Road with easements. 

OSV use is compatible with the 

characteristics of this residential area, 

specifically for the residents that live 

year-round, or recreate in this rural 

area during the winter.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

135

Andesite West Trail (SNO-17E04)

This 3.5-mile marked and designated OSV trail partially overlays the Forest Service 14E07 summer OHV route. This trail is located on the west 

side of Andesite Peak north of Donner Summit, starting at the Interstate 80 off-ramp. The Andesite West Trail provides for OSV travel around 

Castle Valley and Round Valley, which are not designated for cross-country OSV use (Castle Management Area #44, LRMP, pg. V-262). It also 

guides snowmobilers to a safe crossing of Lower Castle Creek. The Andesite West OSV Trail is not available for grooming, although it is 

sometimes track-packed during search and rescue operations. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on old road beds 

and in areas where there is no road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The old road beds should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff. Allowing OSV 

use on the sections of trail with no underlying 

roadbed only when adequate snow depth is 

present would prevent damage to the underlying 

soils and vegetation.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This trail also traverses 

sensitive riparian areas. If OSV use 

occurs when snow there is inadequate 

snow depth or density (i.e. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows 

when snow depths are inadequate for resource 

protection.
Over-snow Vehicle Use Designation

Tahoe National Forest

136

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Minimize damage to soil 

and water 

quality.(continued)

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Minimize harassment of 

wildlife.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

137

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. The Andesite West Trail crosses 

Sierra Nevada yellow-legged frog 

suitable and designated critical habitat. 

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when there 

is inadequate snow depth and density 

as evidenced by exposed soil and 

open waterways. OSV use in areas 

with exposed soil can lead to reduced 

water quality from soil erosion and 

sedimentation.

Sierra Nevada yellow-legged frog suitable and 

designated critical habitat will be protected by 

only allowing OSV use to occur when there is 

adequate snow depth to protect the frogs and 

their habitats.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill) and/or 

IRA)?

Yes. The Castle Valley and Round 

Valley Areas, including the Peter 

Grubb Hut, receive heavy nonmotorized use during the winter.

The northwestern segment of the Trail 

lies within the Castle Peak IRA. Noise 

from OSV use could adversely impact 

opportunities for solitude and quiet 

recreation in this IRA. 

Signing, map displays in field, patrolling by 

Forest Service and volunteers (North Tahoe 

Backcountry Ski Patrol). The Forest Plan does 

not designate Castle Valley or Round Valley for 

cross-country OSV use (LRMP, pg. V-262).

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No. N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

138

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands. (continued)

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No.

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, 

tracked motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Limited use by tracked OSVs of 

all widths occurs on this trail (snow 

tractors, snowmobile, tracked 

motorcycles-trail sleds, tracked ATVs, 

tracked UTVs).

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

139

Bald Ridge Loop Trail (SNO-13E88)

This 14.4-mile designated OSV trail, which is available for grooming, is a loop off the Jackson Meadows-Little Truckee Summit OSV Trail, and 

overlays the Forest Service 88 Road. This OSV trail is typically groomed only once or twice a month during the winter.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on graveled surface 

roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The gravel road that this trail uses should have 

adequate drainage to minimize concentrated 

snowmelt runoff. 

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This trail also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (i.e., during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas.

The road should have adequate drainage that 

directs runoff away from the meadow/wetland 

areas and from the stream crossings and 

riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows 

when snow depths are inadequate for resource 

protection.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

140

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to soil 

and water 

quality.(continued)

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, the Bald Ridge Loop Trail passes 

through a California spotted owl PAC 

and northern goshawk PAC. The trail 

is within 1⁄4 mile of spotted owl and 

goshawk activity centers. 

Spotted owls and goshawks initiate 

breeding in February and March when 

OSV disturbance during breeding 

season initiation has the potential to 

disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season Limited Operating 

Period if there is documented evidence of 

disturbance from February 15 through 

September 15 (northern goshawk) and from 

March 1 through August 15 (California spotted 

owl).

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

141

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes, the Bald Ridge Loop Trail crosses 

suitable habitat for the federally 

endangered Sierra Nevada yellowlegged frog (SNYLF). 

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when there 

is inadequate snow depth and density 

as evidenced by exposed soil and 

open waterways. OSV use in areas 

with exposed soil can lead to reduced 

water quality from soil erosion and 

sedimentation.

Sierra Nevada yellow-legged frog suitable 

habitat will be protected by only allowing OSV 

use to occur when there is adequate snow depth 

to protect the frogs and their habitats.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Bald Ridge Loop Trail passes 

through suitable marten and wolverine 

habitat. Verified wolverine detections 

are located near the trail.

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62). Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.
Over-snow Vehicle Use Designation

Tahoe National Forest

142

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No. N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands.

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths is common place 

on this trail (grooming machine, snow 

tractors, snowmobile, tracked 

motorcycles, tracked ATVs, tracked 

4x4s)

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

143

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

144

Bear Valley Trail

This 6.5-mile designated OSV trail, overlays Forest Service Road 4. This Trail starts at the Sierra Brooks community south of Loyalton and ends 

at the intersection of Lemon Canyon Road (Sierra County Road 650) and Cottonwood Road (Sierra County Road 451).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil and 

water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with OSV 

use?

Yes, there is potential for impacts on soil 

and water from OSV use. Snow depth 

and density can vary considerably, 

especially in the spring and fall. OSV 

use can cause rutting on underlying 

roads and trails and soil disturbance to 

streambanks at stream crossings and in 

areas without adequate snow depth and 

density.

This trail is located on a gravel surface 

road. 

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality. 

The Trail is located along Bear Valley Creek. The 

southern half of the trail runs along the creek and 

meadow system. The gravel surface road should 

have adequate drainage to disperse runoff and to 

prevent erosion of the road surface during runoff. 

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This area also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (e.g. during the shoulder 

seasons), OSV use can result in 

compaction of snow, crushing and loss 

of meadow/riparian plants and soil, 

hence, potentially causing damage and 

degradation to sensitive 

meadow/riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

145

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

Minimize damage to soil and 

water quality.(continued)

Could OSV use affect a municipal 

water system comprised of a 

small reservoir that goes directly 

into a local community water 

supply?

No N/A

Minimize damage to vegetation 

and other forest resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

No. N/A

Minimize harassment of 

wildlife.

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A 

Does the trail or area contain key 

deer winter range?

No. N/A

Minimize significant disruption 

of wildlife habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

146

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts between 

motor vehicle use and existing 

or proposed recreational uses 

of NFS lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill))?

No. N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses of 

neighboring Federal lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No. MVUM regulations prohibit wheeled 

motor vehicle use from December 31 to 

April 24.

N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, UTVs, 

4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 

inches wide? Is this potentially 

creating conflicts?

Yes. Use by tracked over-snow vehicles 

over 50 inches is not common, but is 

expected to increase over time.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users on the OSV trail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

147

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility of motor 

vehicle use with existing 

conditions in populated areas, 

taking into account sound, 

emissions, and other factors.

Is the trail adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

Yes, this trail starts at the small 

community of Sierra Brooks, south of 

Loyalton. Yes, the trail is compatible 

with the community’s characteristics. It is 

often used during the winter by OSV 

recreationists originating from Sierra 

Brooks/Loyalton.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

148

Bowman OSV Trail

This 13.6-mile designated OSV trail overlays the Forest Service 18 Road. The Trail connects Highway 20 and Bowman Lake and provides 

access to the Grouse Ridge area.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with OSV 

use?

Yes, there is potential for impacts from OSV 

use. Snow depth and density can vary 

considerably, especially in the spring and fall.

OSV use can cause rutting on underlying 

roads and trails, soil disturbance to 

streambanks at crossings and in areas 

without adequate snow depth and density.

Most of the trail overlies the paved Bowman 

Road; however, the northern part of the trail 

is on gravel and native surface roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to 

soils and vegetation, which will protect water 

quality. Additionally, since compacted snow 

on OSV trails increase runoff, the unpaved 

sections of the Bowman Road used for this 

OSV trail should have adequate drainage to 

minimize rilling of the road surface.

Does the trail contain sensitive 

riparian areas, for example wet 

meadows, fens, etc.?

Yes. There is a sensitive stream crossing on 

Texas Creek where the trail is located on the 

unpaved portion of the Bowman Road.

The trail sections near the Texas Creek 

stream crossing should have adequate 

drainage to minimize runoff from the road

surface transporting sediment to the Creek.

Does the trail drain into a 303(d)-

listed waterbody?

No N/A

Does the trail have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

149

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in 

or around the trail under 

consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Does the trail include designated 

botanical areas (SIA, RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, there is a California spotted owl and a 

goshawk nest site within 1⁄4 mile of the 

Bowman OSV Trail. 

Generally, goshawks and spotted owls initiate 

breeding in February and March, 

respectively. OSV use during breeding 

season initiation has the potential to disturb 

nesting owls and goshawks and could 

potentially disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate 

impacts where there is documented evidence 

of disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, 

and road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season limited 

operating period if there is documented 

evidence of disturbance to nest site from the 

above as follows: California spotted owl –

March 1 through August 15 and northern 

goshawk – February 15 through September 

15.

Does the trail encompass 

sandhill crane nest sites?

No. N/A

Does the trail encompass known 

bald eagle nest sites?

No. N/A

Does the trail contain key deer 

winter range?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

150

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes. The Bowman OSV Trail crosses 

Federally endangered Sierra Nevada yellowlegged frog (SNYLF) suitable habitat and 

designated critical habitat.

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if 

use occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with 

exposed soil can lead to reduced water 

quality from soil erosion and sedimentation.

SNYLF suitable and designated critical 

habitat area would be protected by only 

allowing OSV use to occur when there is 

adequate snow depth to prevent damage to 

aquatic habitats including, soil, water and 

riparian vegetation along the Bowman Trail.

Does the trail contain habitat for 

marten, wolverine, or other 

sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill), and/or IRAs?

No N/A

Conflicts between 

motor vehicle use and 

existing or proposed 

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

recreational uses of 

neighboring Federal 

lands

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

151

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

Yes. Currently plowing is allowed to Fuller 

Lake for private landowners.

Yes. The trailhead moves up and down in 

elevation with the snow level and plowing.

There is no mixing of wheeled traffic and 

OSVs.

There are adequate sight distances in both 

directions on this route (which is available for 

grooming) to allow safe travel. Additionally, 

there is signage placed to inform users at the 

trailhead.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands.

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50”wide? Is this potentially 

creating conflicts?

Yes. Use by slow over-snow vehicles has 

been very low, but is expected to increase 

overtime as their popularity increases.

OSVs wider than 50 inches would not be 

allowed off the designated snow trail system. 

Experience has shown that there is adequate 

space for all users on the OSV trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

Yes. There are a few private homes along 

this trail near Fuller and Rucker Lakes 

No, the trail is not adjacent to recreation 

residences used during the winter.

Public and private lands will be displayed on 

the OSVUM.
Over-snow Vehicle Use Designation

Tahoe National Forest

152

Cal Ida Scales Trail

This 15-mile designated OSV trail, overlays Forest Service Road 35. This Trail provides access over a paved and gravel road through relatively 

lower elevations (4,300 – 5,000 feet), with potentially poor snow conditions, to reach higher elevations and deeper snow along a broad ridge 

containing a network of roads that provide snowmobile opportunities in an otherwise densely forested area.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil and 

water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? Is 

there potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts on soil 

and water from OSV use. Snow depth 

and density can vary considerably, 

especially in the spring and fall. OSV 

use can cause rutting on underlying 

roads and trails and soil disturbance to 

streambanks at stream crossings and in 

areas without adequate snow depth and 

density.

This trail is located on a bituminous and 

graveled surface road segments.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality. 

The graveled road segments should have 

adequate drainage to disperse runoff and to 

prevent erosion of the road surface during runoff. 

(large rills or small gullies) of the road surface 

during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

Yes. The trail crossed multiple perennial 

and intermittent streams. Riparian 

vegetation is present at most of these 

stream crossings.

As the road is either graveled or has been 

surfaced, there is low potential for sediment 

delivery into the streams and riparian areas.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

153

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

Yes. There are occurrences of Sensitive 

plant species in the Cal Ida Scales Trail 

crosses two known occurrences of 

Lupinus dalesiae, a Sensitive plant 

species.

If OSV use occurs when snow depth and 

density are inadequate (i.e. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing of 

Sensitive plants and soil, potentially 

causing direct mortality and/or loss of 

vigor and productivity.

Sensitive plants occurrences along the Cal Ida 

Scales OSV Trail will be protected by allowing 

OSV use to occur only when there is adequate 

snow depth to prevent damage to plants and 

prevent soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, the Cal Ida Scales Trail crosses or 

is within close proximity to three 

California spotted owl and two Northern 

goshawk PACs.

Spotted owls and goshawks initiate 

breeding in February and March when 

OSV disturbance during breeding season 

initiation has the potential to disrupt 

nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and road 

uses (including road maintenance). Evaluate 

developments for their potential to disturb nest site.

Implement a breeding season Limited Operating 

Period if there is documented evidence of 

disturbance to nest site from the above as follows: 

California spotted owl – March 1 through August 15 

and Northern goshawk – February 15 through 

September 15.

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A 

Does the trail or area contain key 

deer winter range?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

154

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize significant 

disruption of wildlife habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes. The Cal Ida Scales Trail crosses 

suitable Sierra Nevada yellow-legged 

frog habitat.

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when snow 

depth and density are inadequate as 

evidenced by exposed soil and open 

waterways. OSV use in areas with 

exposed soil can lead to reduced water 

quality from soil erosion and 

sedimentation.

Suitable Sierra Nevada yellow-legged frog habitat 

would be protected by only allowing OSV use to 

occur when there is adequate snow depth to 

prevent damage to aquatic habitats including, soil, 

water and riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill))?

No. Monitoring has shown that this Trail 

is seldom used by non-motorized winter 

users. The steep drive up the narrow 

county road across a steep hillside 

during icy winter conditions to access the 

area is a contributing factor to the low 

use. The lack of winter attractions, like 

lakes or meadows, may be another 

factor in the low non-motorized use.

N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses of 

neighboring Federal lands

Does the trail abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

155

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

Yes. Due to the low use from either 

wheeled or tracked vehicles in the winter 

and good sight distances along the trail, 

there are no known safety issues.

The Yuba River Ranger District will monitor for 

complaints from users and will consider 

management actions, i.e. install user courtesy 

signage, should safety become an issue in the 

future.

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, UTVs, 

4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles 

over 50 inches is not common, but is 

expected to increase over time.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users on the OSV trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

156

Carmen Valley Trail

This 8-mile designated OSV trail, overlays Forest Service Road 71. This Trail begins on the south end at State Highway 89. This Trail (and 

associated OSV spur trails in this area) provide winter OSV recreational opportunities for the adjacent communities of Portola and Calpine.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil and 

water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? Is 

there potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts on soil 

and water from OSV use. Snow depth 

and density can vary considerably, 

especially in the spring and fall. OSV 

use can cause rutting on underlying 

roads and trails and soil disturbance to 

streambanks at stream crossings and in 

areas without adequate snow depth and 

density.

This trail is located on a both graveled 

and native surface road surfaces. 

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality. 

The Trail is located on Forest Service Road 71, 

which is graveled in the southern part of the road, 

and native surface for the northern portion of the 

road. The native surface road should have 

adequate drainage to disperse runoff and to 

prevent erosion of the road surface during runoff. 

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This area also contains 

sensitive riparian areas. If OSV use 

occurs when snow levels are low (i.e. 

during the shoulder seasons), OSV use 

can result in compaction of snow, 

crushing and loss of meadow/riparian 

plants and soil, hence, potentially 

causing damage and degradation to 

sensitive meadow/riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation. OSV use in the Carman 

Valley area would be designated on trails 

overlaying Forest Service roads under the 

proposed action. 

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Draft Environment Impact Statement – Volume II

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Tahoe National Forest

157

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to soil and 

water quality. (continued)

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

No. N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes. The Carman Valley Trail passes by 

a Northern goshawk PAC. 

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and road 

uses (including road maintenance). Evaluate 

developments for their potential to disturb nest site.

Implement a breeding season Limited Operating 

Period if there is documented evidence of 

disturbance to nest site from the above as follows: 

California spotted owl – Northern goshawk –

February 15 through September 15.

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A 

Does the trail or area contain key 

deer winter range?

No. N/A

Minimize significant 

disruption of wildlife habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

158

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill))?

No. N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses of 

neighboring Federal lands

Does the trail abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No. MVUM regulations prohibit wheeled 

motor vehicle use from December 31 to 

April 24.

N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, UTVs, 

4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles 

over 50 inches is not common, but is 

expected to increase over time.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users on the OSV trail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

159

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

Yes, this trail is adjacent to the 

communities of Portola and Calpine. 

The trail is compatible with the 

communities’ characteristics, providing 

desired winter OSV recreational 

opportunities.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

160

Carmen Valley Spur Trail

This 1.7-mile designated OSV trail, overlays Forest Service Roads 71-041-70 and 71-015. This trail provides OSV recreation opportunity for the 

adjacent local communities of Portola and Calpine.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil and 

water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? Is 

there potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts on soil 

and water from OSV use. Snow depth 

and density can vary considerably, 

especially in the spring and fall. OSV 

use can cause rutting on underlying 

roads and trails and soil disturbance to 

streambanks at stream crossings and in 

areas without adequate snow depth and 

density.

This trail is located native surface roads 

(71-041-70_ and gravel surface road (71-

015) 

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality. 

Road 71-041-70 is native surface with some steep 

road segments, which makes it more difficult to 

have effective drainage. The native surface road 

should have adequate drainage to disperse runoff 

and to prevent erosion of the road surface during 

runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

Yes. There are mapped meadows 

adjacent to the Carmen Spur Trail (Road 

71). If OSV use occurs when snow levels 

are low (i.e., during the shoulder 

seasons), OSV use can result in 

compaction of snow, crushing and loss of 

meadow/riparian plants and soil, hence, 

potentially causing damage and 

degradation to sensitive meadow/riparian 

areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation. OSV use on the Carman 

Valley Spur Trail would be designated on trails 

overlaying Forest Service roads under the 

proposed action. 

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

161

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to soil and 

water quality. (continued)

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

Yes. The Carmen Valley Spur Trail 

crosses an area with two Sensitive 

species – Ivesia sericoleuca and 

Pyrrocoma lucida.

If OSV use occurs when snow depth and 

density are inadequate (e.g., during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing of 

Sensitive plants, potentially causing 

direct mortality and/or loss of vigor and 

productivity.

Sensitive plants occurrences along the Carmen 

Valley Spur Trail will be protected by allowing 

OSV use to occur only when there is adequate 

snow depth to prevent damage to plants and 

prevent soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

No. N/A

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A 

Does the trail or area contain key 

deer winter range?

No. N/A

Minimize significant 

disruption of wildlife habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

No. N/A 

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

162

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill))?

No. N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses of 

neighboring Federal lands

Does the trail abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No. MVUM regulations prohibit wheeled 

motor vehicle use from December 31 to 

April 24.

N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, UTVs, 

4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles 

over 50 inches is not common, but is 

expected to increase over time.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users on the OSV trail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

163

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

Yes, this trail is adjacent to the 

communities of Portola and Calpine. 

The trail is compatible with the 

communities’ characteristics, providing 

desired winter OSV recreational 

opportunities. 

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

164

Eureka Trail

This 6.5-mile designated OSV trail, overlays Forest Service Road 25. This Trail provides access over a paved road through relatively lower 

elevations (3,500 – 5,000 feet), with potentially poor snow conditions, to reach higher elevations and deeper snow along a broad ridge 

containing a network of roads that provide snowmobile opportunities in an otherwise densely forested area.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil and 

water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? Is 

there potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts on soil 

and water from OSV use. Snow depth 

and density can vary considerably, 

especially in the spring and fall. OSV 

use can cause rutting on underlying 

roads and trails and soil disturbance to 

streambanks at stream crossings and in 

areas without adequate snow depth and 

density.

This trail is located on a bituminous 

surface road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality. 

The surface road is resistant to erosion during 

snowmelt runoff. 

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

No. N/A

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

165

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use?

No. N/A.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

No. N/A

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A 

Does the trail or area contain key 

deer winter range?

No. N/A

Minimize significant 

disruption of wildlife habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill))?

No. Monitoring has shown that this Trail 

is seldom used by non-motorized winter 

users. The steep drive up the narrow 

county road across a steep hillside 

during icy winter conditions that 

accesses the area is a contributing factor 

to the low use. The lack of winter 

destinations, i.e. lakes or meadows, may 

be another factor in the low nonmotorized use.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

166

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses of 

neighboring Federal lands

Does the trail abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

Yes. Due to the low use from either 

wheeled or tracked vehicles in the winter 

and good sight distances along the trail, 

there are no known safety issues.

The Yuba River Ranger District will monitor for 

complaints from users and will consider 

management actions, like posting user courtesy 

signage, should safety become an issue in the 

future.

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, UTVs, 

4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles 

over 50 inches is not common, but is 

expected to increase over time.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users on the OSV trail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

167

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

168

Duncan “Y” Trail NO-13E20

This 5.1-mile designated OSV trail overlays Forest Service Road 43. This trail starts from the Robinson Flat OSV Trail (Sno-13E17) and 

connects to the Duncan Y intersection. It is often used by motorized over-snow vehicle users, in conjunction with the Mosquito Ridge OSV Trail 

(Sno-12E16), to access French Meadows Reservoir. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with OSV 

use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

This trail is located on a graveled road.

Soil and water resources will be protected 

by allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to soils and vegetation, which will 

protect water quality. The gravel road that 

this trail uses should have adequate 

drainage to disperse runoff and minimize 

concentrated snowmelt runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

No. N/A

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

169

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could 

potentially be affected by OSV 

use? 

Yes. The Duncan “Y” OSV Trail passes through 

a Sensitive plant occurrence Lewisia kelloggi

ssp. hutchisonii.

If OSV use occurs when snow depth and density 

are inadequate (e.g. during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Sensitive plants, potentially 

causing direct mortality and/or loss of vigor and 

productivity.

The Sensitive plant occurrence along the 

Duncan “Y” OSV Trail will be protected by 

allowing OSV use to occur only when there 

is adequate snow depth to prevent damage 

to plants and prevent soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes. The Duncan “Y” OSV Trail is within 1⁄4 mile 

of a California spotted owl activity center.

Spotted owls typically initiate breeding in March. 

OSV use during the spotted owl breeding season 

has the potential to disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate 

impacts where there is documented 

evidence of disturbance to the nest site from 

existing recreation, off highway vehicle 

route, trail, and road uses (including road 

maintenance). Evaluate developments for 

their potential to disturb nest site.

Implement a breeding season limited 

operating period if there is documented 

evidence of disturbance to spotted owl 

activity center from March 1 through August 

15.

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A

Does the trail or area contain key 

deer winter range?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

170

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill) and/or 

IRAs)?

No. Monitoring has shown that this trail is far 

enough away from the China Wall Winter 

Trailhead that non-motorized winter use of the 

trail is very rare. 

This OSV trail is located adjacent to the Duncan 

Canyon IRA; however, impacts from OSV use on 

opportunities for solitude are expected to be 

minimal as non-motorized winter use in this area 

is rare due to its distance from the winter 

trailhead at China Wall.

N/A

Conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of 

neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A 
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

171

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands. 

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow vehicles over 50 

inches is not common, but is expected to 

increase over time.

OSVs wider than 50 inches would not be 

allowed off the designated OSV trail system. 

Experience has shown that there is 

adequate space for all users on the OSV 

trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community

No.

No.
Over-snow Vehicle Use Designation

Tahoe National Forest

172

Fifty-Four Road Trail SNO-12E71

This 12.5-mile designated OSV trail, which is available for grooming, overlays the Forest Service 54 Road, starting at its intersection with the 

Yuba-Webber Trail and ending at State Highway 49 at Bassett’s. This trail is typically groomed once a week during the winter season, pending 

snow conditions at lower elevations.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to soil 

and water from OSV use? Potential 

for exposed soil during the times 

OSV use could occur? Is there 

potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts from OSV 

use. Snow depth and density can vary 

considerably, especially in the spring and fall.

OSV use can cause rutting on underlying 

roads and trails, soil disturbance to 

streambanks at crossings and in areas without 

adequate snow depth and density.

This trail is located on gravel roads. 

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to 

soils and vegetation, which will protect water 

quality. The gravel roads that this trail uses 

should have adequate drainage to minimize 

concentrated snowmelt runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

Yes, this trail has several stream crossings. The road should have adequate drainage that 

directs runoff away from the stream channels 

and riparian areas.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

No. N/A 

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

173

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes, The Fifty-four Road Trail passes through 

a California spotted owl PAC (SIE0042) and is 

within 1⁄4 mile of the activity center. 

Spotted owls generally initiate nesting in 

March. OSV use during the spotted owl 

breeding season could potentially disrupt 

nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate 

impacts where there is documented evidence 

of disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, 

and road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

If there is documented evidence of 

disturbance to the nest site(s), implement a 

breeding season limited operating period 

from March 1 through August 15.

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No N/A

Does the trail or area contain key 

deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes. The Fifty-four Road trail crosses federally 

endangered Sierra Nevada yellow-legged frog 

(SNYLF) suitable habitat.

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with 

exposed soil can lead to reduced water quality 

from soil erosion and sedimentation.

Sierra Nevada yellow-legged frog suitable 

habitat will be protected by only allowing OSV 

use to occur when there is adequate snow 

depth to protect the frogs and their habitats.
Over-snow Vehicle Use Designation

Tahoe National Forest

174

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.(continued)

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

Yes, the Fifty-four Road Trail passes through 

an area that has had several detections of a 

single male wolverine, including along the 

Fifty-four Road. The trail also crosses suitable 

marten habitat.

• Wolverine Detections (SNFPA ROD S&G 

32, pg. 54): When verified (wolverine) 

sightings occur, conduct an analysis to 

determine if activities within 5 miles of a 

detection have a potential to affect the 

species. If necessary, apply a limited 

operating period from January 1 to June 

30 to avoid adverse impacts to pot4ential 

breeding. Evaluate activities for a 2-year 

period for detections not associated with a 

den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, PCT, 

Wilderness, Wild & Scenic Rivers, 

ski areas (cross-country, downhill) 

and/or IRAs)?

No. N/A

Conflicts between 

motor vehicle use and 

existing or proposed 

Does the trail abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

recreational uses of 

neighboring Federal 

lands

Does the trail abut a non-motorized 

area on adjacent national forest or 

other Federal lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this trail allow wheeled motor 

vehicle use over snow? If so, does 

this affect safety and winter 

management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle use?

Are road crossings allowed by 

OSVs?

No, ends across from Bassett’s at State 

Highway 49 (OSV crossing allowed).

There is adequate sight distance for OSV 

crossing of Highway 49.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

175

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands. (Fast –

snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles of all 

widths occurs on this trail (grooming machine, 

snow tractors, snowmobile, tracked 

motorcycles, tracked ATVs, tracked UTVs, 

tracked 4x4s)

OSVs wider than 50 inches would not be 

allowed off the designated OSV trail system. 

Experience has shown that there is adequate 

space for all users on the OSV trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the trail adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

Yes, there is a small neighborhood of vacation 

homes (Green Acres) at the western end of 

the trail across from Bassetts with a few yearround residents. The residents utilize the trail 

for wintertime access to their homes as well as 

for recreational use. OSV use is compatible 

with the distinct characteristics of the 

community.

No, the Trail is not adjacent to recreation 

residences used during the winter.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

176

Ford Point Trail (SNO-13E16)

This 1.7-mile designated OSV trail, which is available for grooming, overlays Forest Service Roads 88-37 and 88-39-01. This Trail provides a 

relatively steep climb on which beginner and intermediate over-snow vehicle users test their climbing skills. This OSV Trail connects to and 

parallels the Foresthill Divide OSV Trail (Sno-12E15).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to soil 

and water from OSV use? Potential 

for exposed soil during the times 

OSV use could occur? Is there 

potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts on soil and 

water from OSV use. Snow depth and density 

can vary considerably, especially in the spring 

and fall. OSV use can cause rutting on 

underlying roads and trails and soil 

disturbance to streambanks at stream 

crossings and in areas without adequate snow 

depth and density.

This trail is located on a native surface road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality. 

The Trail is located within the recent American 

Fire area, which burned in 2013. Due to the 

recent wildfire and loss of vegetation, the burned 

area has higher erosion potential. The native 

surface road should have adequate drainage to 

disperse runoff and to prevent significant erosion 

(large rills or small gullies) of the road surface 

during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

No. N/A

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

177

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

Yes. The Ford Point OSV Trail passes through 

two Sensitive plant occurrences: Lewisia 

kelloggii ssp. hutchisonii and Poa sierrae

If OSV use occurs when snow depth and 

density are inadequate (e.g. during the 

shoulder seasons), OSV use can result in 

compaction of snow, crushing of Sensitive 

plants, potentially causing direct mortality 

and/or loss of vigor and productivity.

Sensitive plants occurrences along the Ford 

Point OSV Trail will be protected by allowing 

OSV use to occur only when there is adequate 

snow depth to prevent damage to plants and 

prevent soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

No. N/A

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A

Does the trail or area contain key 

deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

178

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, PCT, 

Wilderness, Wild & Scenic Rivers, 

ski areas (cross-country, 

downhill))?

No. Monitoring has shown that this Trail is far 

enough away from the China Wall Winter 

Trailhead that non-motorized winter use of the 

trail is rare. 

N/A

Conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of 

neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

Does the trail abut a non-motorized 

area on adjacent national forest or 

other Federal lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this trail allow wheeled motor 

vehicle use over snow? If so, does 

this affect safety and winter 

management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle use?

Are road crossings allowed by 

OSVs?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

179

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands. (Fast –

snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles over 

50 inches is not common, but is expected to 

increase over time.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users on the OSV trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the trail adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

No, this Trail is not adjacent to neighborhoods, 

communities, or recreation residences

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

180

Foresthill Divide Trail (SNO-12E15)

This 14.2-mile designated OSV trail, which is available for grooming, overlays the Foresthill Divide Road (a Placer County road with a Forest 

Service easement for winter management). This trail is the main groomed route that OSV users access out of the China Wall Winter Trailhead 

and connects to Robinson Flat and the Sno-14E17 and Sno-13E17 OSV Trails.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings and in 

areas without adequate snow depth and density.

This OSV trail overlays a paved road.

Soil and water resources will be protected 

by allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to soils and vegetation, which will 

protect water quality.

Does the trail contain sensitive 

riparian areas, for example wet 

meadows, fens, etc.?

Yes. Meadows, wetlands and riparian areas will 

be protected by allowing OSV use to occur 

only when there is adequate snow depth to 

prevent damage to soils and vegetation.

Does the trail drain into a 

303(d)-listed waterbody?

No N/A

Does the trail have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

181

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use?

Yes. The Foresthill Divide OSV Trail passes 

through two species Sensitive Plant occurrences:

Lewisia kelloggii ssp. hutchisonii and Poa 

sierrae.

If OSV use occurs when snow depth and density 

are inadequate (e.g., during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Sensitive plants, potentially 

causing direct mortality and/or loss of vigor and 

productivity.

Sensitive plants occurrences along the 

Foresthill Divide OSV Trail will be protected 

by allowing OSV use to occur only when 

there is adequate snow depth to prevent 

damage to plants and prevent soil 

compaction.

Does the trail include 

designated botanical areas 

(SIA, RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes. The Foresthill Divide Trail is within 1⁄4 mile of 

California spotted owl and northern goshawk

nest sites.

Generally, goshawks and spotted owls initiate 

breeding in February and March, respectively. 

OSV use during the breeding season has the 

potential to disturb nesting owls and goshawks 

and could potentially disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61). Mitigate 

impacts where there is documented 

evidence of disturbance to the nest site from 

existing recreation, off highway vehicle 

route, trail, and road uses (including road 

maintenance). Evaluate developments for 

their potential to disturb nest site.

Implement a breeding season limited 

operating period if there is documented 

evidence of disturbance to nest site from the 

above as follows: California spotted owl –

March 1 through August 15 and northern

goshawk – February 15 through September 

15.

Does the trail encompass 

sandhill crane nest sites?

No. N/A

Does the trail encompass 

known bald eagle nest sites?

No. N/A

Does the trail contain key deer 

winter range?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

182

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail contain TES 

aquatic habitat and/or 

designated critical habitat?

Yes. The Foresthill Divide Trail crosses Sierra 

Nevada yellow-legged frog (SNYLF) suitable 

habitat above 4,000 feet, but not occupied 

habitat.

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

SNYLF suitable habitat area would be 

protected by only allowing OSV use to occur 

when there is adequate snow depth to 

prevent damage to aquatic habitats 

including, soil, water and riparian vegetation 

along the Foresthill Divide Trail.

Does the trail contain habitat for 

marten, wolverine, or other 

sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this trail or 

area cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, Wilderness, 

Wild & Scenic Rivers, ski areas 

(cross-country, downhill)?

Yes. There is a small potential for conflict 

towards the start of the trail near the China Wall 

Winter Trailhead where it is common for crosscountry skiers and snowshoers to use the trail for 

a few miles; however, this non-motorized use 

occurs most often on weekdays to avoid 

motorized uses, which are more common on 

weekends.

Display a copy of the OSVUM at the China 

Wall Winter Trailhead. Include trail etiquette 

information on the Tahoe NF OSVUM.

Conflicts between motor 

vehicle use and existing 

or proposed 

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

recreational uses of 

neighboring Federal 

lands

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

183

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different classes 

of motor vehicle uses of 

NFS lands. 

Does this trail or area allow 

wheeled motor vehicle use over

snow? If so, does this affect 

safety and winter management 

of this area?

No N/A

Does this trail or area cross or 

contain plowed roads allowing 

vehicle use? Are road crossings 

allowed by OSVs?

No N/A

Minimize conflicts 

among different classes 

of motor vehicle uses of 

other neighboring 

Federal lands.

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow vehicles over 50 

inches is not common, but is expected to 

increase over time.

Over-snow vehicles larger than 50 inches 

wide would not be allowed off the 

designated OSV trail system. Experience 

has shown there is adequate width for 

combined use of the snow-trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing conditions 

in populated areas, 

taking into account 

sound, emissions, and 

other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

Parcels of private property exist approximately 2 

miles from the China Wall Winter Trailhead; 

these parcels contain a few residences. The trail 

crosses the private land on the County Road.

Residents live year-round in this rural area and 

the distinct characteristics of this community are 

compatible with winter motorized uses.

The trail is not adjacent to recreation residences 

used during the winter.

The Forest Service is not authorizing public 

use of private lands. Private lands will be 

identified on the Tahoe National Forest 

Over-Snow Vehicle Use Map.
Over-snow Vehicle Use Designation

Tahoe National Forest

184

Frosty East Trail

This 5-mile designated OSV trail, overlays Forest Service Road 71-041. This Trail provides winter OSV recreational opportunities for the 

communities of Portola and Calpine.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil and 

water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? Is 

there potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts on soil 

and water from OSV use. Snow depth 

and density can vary considerably, 

especially in the spring and fall. OSV 

use can cause rutting on underlying 

roads and trails and soil disturbance to 

streambanks at stream crossings and in 

areas without adequate snow depth and 

density.

This trail is located on a native surface 

road. 

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality. 

The native surface road should have adequate 

drainage to disperse runoff and to prevent erosion 

of the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

Yes. This trail crosses multiple 

intermittent and ephemeral stream 

channels.

With trail use limited to periods with adequate snow 

depth, erosion from the road surface should be 

minimized, reducing sediment delivery at the 

stream crossings.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A

Are TES plants known to occur in 

or around the trail or area under 

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

185

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize damage to 

vegetation and other forest 

resources.

consideration that could potentially 

be affected by OSV use? 

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

No. N/A

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A 

Does the trail or area contain key 

deer winter range?

No. N/A

Minimize significant 

disruption of wildlife habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill))?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

186

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses of 

neighboring Federal lands

Does the trail abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No. MVUM regulations prohibit use of 

wheeled motor vehicles from December 

31 to April 24.

N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, UTVs, 

4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles 

over 50 inches is not common, but is 

expected to increase over time.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users on the OSV trail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

187

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

Yes, this trail is adjacent to the 

communities of Portola and Calpine. 

The trail is compatible with the 

communities’ characteristics, providing 

desired winter OSV recreational 

opportunities. 

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

188

Gold Valley Trail (Sno-12E22)

This 12.6-mile designated OSV trail overlays the 93 and 93-3 Roads and Gold Valley Jeep Trail. This trail is not available for grooming. The 

Trail creates a connection from Packer Lake to Spencer Lakes.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use?

Potential for exposed soil 

during the times OSV use 

could occur? Is there 

potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts from OSV use.

Snow depth and density can vary considerably, 

especially in the spring and fall. OSV use can 

cause rutting on underlying roads and trails as 

well as soil disturbance to streambanks at 

crossings and in areas without adequate snow 

depth and density.

This OSV trail overlays existing roads and a jeep 

trail.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to 

soils and vegetation, which will protect water 

quality. Additionally, since compacted snow 

on OSV trails increase runoff, the underlying 

roads and jeep trail should have adequate 

drainage to minimize rilling of the road 

surface.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. This trail lies within or adjacent to multiple 

mapped meadows and wetlands designated by 

the U.S. Fish and Wildlife Service National 

Wetlands Inventory. The trail has several stream 

crossings with sensitive riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to 

prevent damage to soils and vegetation. The 

road and trail sections within and adjacent to 

meadows and wetlands, and the stream 

crossings should have adequate drainage to 

minimize runoff from the road surface 

transporting sediment to these meadows, 

wetlands and stream crossings. 

Include public education/information on the 

OSVUM to discourage OSV use in meadows 

when snow depths are inadequate for 

resource protection.

Does the trail or area drain 

into a 303(d)-listed 

waterbody?

No N/A

Does the area have a 

hydraulic mine site or sites?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

189

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Could OSV use affect a 

municipal water system 

comprised of a small 

reservoir that goes directly 

into a local community water 

supply?

No N/A

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to 

occur in or around the trail or 

area under consideration that 

could potentially be affected 

by OSV use?

Yes. The Gold Valley OSV Trail passes through 

Sensitive and Watchlist plant occurrences 

(Lewisia kelloggii ssp. hutchisonii and Corydalis 

caseana ssp. caseana)

If OSV use occurs when snow depth and density 

are inadequate (e.g. during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Sensitive or Watchlist plants, 

potentially causing direct mortality and/or loss of 

vigor and productivity.

Sensitive and Watchlist plant occurrences 

within the Gold Valley OSV Trail will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to 

prevent damage to plants and prevent soil 

compaction.

Does the trail or area include 

designated botanical areas 

(SIA, RNA)?

No N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest 

sites?

No N/A

Does the trail or area 

encompass sandhill crane 

nest sites?

No N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

190

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. The Gold Valley OSV Trail crosses Sierra 

Nevada yellow-legged frog (SNYLF) suitable 

habitat and a small portion of designated critical 

habitat. The trail does not contain occupied 

habitat. 

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with exposed 

soil can lead to reduced water quality from soil 

erosion and sedimentation.

SNYLF suitable habitat area would be 

protected by only allowing OSV use to occur 

when there is adequate snow depth to 

prevent damage to aquatic habitats including, 

soil, water and riparian vegetation along the 

Gold Valley OSV Trail.

Does the trail or area contain 

habitat for marten, wolverine, 

or other sensitive forest 

carnivores?

The Trail crosses forest carnivore habitat and 

includes low to moderate quality wolverine 

denning habitat. 

Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62): Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites.

Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

pot4ential breeding. Evaluate activities for a 

2-year period for detections not associated 

with a den site.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

191

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor vehicle 

use and existing or 

proposed recreational 

uses of NFS lands 

Would OSV use of this trail or 

area cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, 

Wilderness, Wild & Scenic 

Rivers, ski areas (crosscountry, downhill), IRAs?

No

Most of the northern half of this trail lies within the 

East Yuba Inventoried Roadless Area (IRA). 

However, these areas are sufficiently far from the 

trailhead that it receives limited or little nonmotorized use during the winter.

Conflicts between motor 

vehicle use and existing 

or proposed recreational 

uses of neighboring 

Federal lands

Does the trail or area abut a 

wilderness area or National 

Park managed by other 

agencies?

No N/A

Does the trail or area abut a 

non-motorized area on 

adjacent national forest or 

other Federal lands?

No N/A

Does the trail or area abut a 

developed recreation site on 

neighboring Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS 

lands. 

Does this trail or area allow 

wheeled motor vehicle use 

over snow? If so, does this 

affect safety and winter 

management of this area?

No N/A

Does this trail or area cross 

or contain plowed roads 

allowing vehicle use? Are 

road crossings allowed by 

OSVs?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

192

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area cause 

adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV 

use to minimize these effects?

Minimize conflicts among 

different classes of motor

vehicle uses of other 

neighboring Federal 

lands. (Fast –

snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail or area receive 

use by both slow and fast 

over-snow vehicles? Is this 

potentially creating conflicts?

No N/A

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking 

into account sound, 

emissions, and other 

factors.

Is the trail or area adjacent to 

neighborhoods and 

communities? 

Is the trail or area adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this trail 

or area compatible with 

distinct characteristics of the 

community?

No, the Trail is not adjacent to neighborhoods, 

communities, or recreation residences used in the 

winter. 

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

193

Haskell Peak Trail (SNO-13E32)

This 15.5-mile designated OSV trail, which is available for grooming, overlays Forest Service Roads 09, 09-15, and 09-15-01. The Trail creates 

a connection from Yuba Pass Winter Trailhead to the Gold Lake Highway Trail (SNO-12E70).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil 

during the times OSV use 

could occur? Is there potential 

for soil disturbance associated 

with OSV use?

Yes, there is potential for impacts from OSV 

use. Snow depth and density can vary 

considerably, especially in the spring and fall.

OSV use can cause rutting on underlying roads 

and trails, soil disturbance to streambanks at 

crossings and in areas without adequate snow 

depth and density.

This trail is located on native surface roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality

The native surface roads should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and wetlands 

designated by the U.S. Fish and Wildlife 

Service National Wetlands Inventory. This trail

also contains sensitive riparian areas. If OSV 

use occurs when snow depth and density are 

inadequate (e.g. during the shoulder seasons), 

OSV use can result in compaction of snow, 

crushing and loss of meadow/riparian plants 

and soil, hence, potentially causing damage 

and degradation to sensitive meadow/riparian 

areas.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The roads should have adequate drainage that 

directs runoff away from the meadow / wetland 

areas and away from the stream channels and 

riparian areas.

The area above the road adjacent to Bear Trap 

Meadow is poorly vegetated and eroding.

However, under the proposed action, OSV use is 

limited to the designated OSV Trail in the area 

around Bear Trap Meadow. The Bear Trap 

Meadow area is not designated for OSV use 

under the proposed action. 

Include public education/information on the 

OSVUM to discourage OSV use in meadows 
Over-snow Vehicle Use Designation

Tahoe National Forest

194

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

when snow depths are inadequate for resource 

protection.

Does the trail or area drain into 

a 303(d)-listed waterbody?

No N/A

Does the area have a 

hydraulic mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes. The Haskell Peak Trail passes by an 

Epilobium howellii occurrence (Watchlist plant). 

If OSV use occurs when snow depth and 

density are inadequate e.g. during the shoulder 

seasons), OSV use can result in compaction of 

snow, crushing of Watchlist plants, potentially 

causing direct mortality and/or loss of vigor and 

productivity.

The Epilobium howellii occurrence along the 

Haskell Peak Trail will be protected by allowing 

OSV use to occur only when there is adequate 

snow depth to prevent damage to plants and 

prevent soil compaction.

Does the trail or area include 

designated botanical areas 

(SIA, RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment 

of wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest 

sites?

Yes, the Haskell Peak OSV Trail passes 

through several California spotted owl and 

northern goshawk PACs. The trail is within 1⁄4 

mile of spotted owl and goshawk activity 

centers. 

Generally, goshawks and spotted owls initiate 

breeding in February and March, respectively. 

OSV use during the breeding season has the 

potential to disturb nesting owls and goshawks 

and could potentially disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). Evaluate 

developments for their potential to disturb nest 

site.

If there is documented evidence of disturbance to 

the nest site(s), implement a breeding season 

limited operating period from March 1 through 

August 15 (spotted owl) or February 15 through 

September 15 (northern goshawk).
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

195

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes, the Haskell Peak Trail crosses federally 

endangered Sierra Nevada yellow-legged frog 

(SNYLF) suitable habitat, occupied habitat, and 

designated critical habitat. 

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if use 

occurs when snow depth and density are 

inadequate as evidenced by exposed soil and 

open waterways. OSV use in areas with 

exposed soil can lead to reduced water quality 

from soil erosion and sedimentation.

Sierra Nevada yellow-legged frog suitable habitat 

will be protected by only allowing OSV use to 

occur when there is adequate snow depth to 

protect the frogs and their habitats.

Does the trail or area contain 

habitat for marten, wolverine, 

or other sensitive forest 

carnivores?

Yes, the Haskell Peak Trail passes through 

suitable marten and wolverine habitat. A known 

marten detection is located near the western 

end of the Haskell Peak Trail. 

• Marten Den Sites (SNFPA ROD - S&G 89, pg. 

62): Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 1 

to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-
Over-snow Vehicle Use Designation

Tahoe National Forest

196

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

year period for detections not associated with 

a den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor 

vehicle use and 

existing or proposed 

recreational uses of 

NFS lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation 

(for example, PCT, 

Wilderness, Wild & Scenic 

Rivers, ski areas (crosscountry, downhill), and/or 

IRAs?

There is the potential for conflicts between 

motorized and non-motorized recreationists 

sharing the Haskell Peak Trail and within an 

area popular with winter non-motorized users 

located north of the Yuba Pass Winter Trailhead 

(a State Sno-Park). There are three designated 

cross-country ski trails that connect to this trail, 

which provides groomed access for skiers.

“No Motorized Use” signs will be posted on the 

borders of the winter non-motorized area. The 

Haskell Peak Trail will be signed as a trail shared 

with non-motorized winter users for the first two 

miles from Yuba Pass.

Conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of 

neighboring Federal 

lands

Does the trail abut a 

wilderness area or National 

Park managed by other 

agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a 

developed recreation site on 

neighboring Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this trail allow wheeled 

motor vehicle use over snow? 

If so, does this affect safety 

and winter management of this 

area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings 

allowed by OSVs?

Yes. The Haskell Peak Trail terminates at State 

Highway 49. Crossing of the highway is allowed 

by tracked winter vehicles.

There is adequate sight distances in both 

directions of the highway crossing to allow safe 

crossing by tracked motorized vehicles.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

Does this trail receive use by 

both tracked over-snow 

vehicles under 50 inches wide

and over 50”wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow vehicles over 

50 inches is not common, but is expected to 

increase over time.

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV trail 

system. Experience has shown there is adequate 

width for combined use of the snow-trail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

197

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use to 

minimize these effects?

neighboring Federal 

lands. 

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility 

of motor vehicle use 

with existing 

conditions in 

populated areas, 

taking into account 

sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to 

recreation residences used 

during the winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

198

Howard Creek Trail (SNO-12E72)

This 5.4-mile designated OSV trail overlays Forest Service Road 28. The Trail creates a connection from the Gold Lake Highway (groomed) to 

Haskell Peak OSV Trail.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT INDICATORS If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to 

soil and water 

quality.

Are there potential impacts to soil and 

water from OSV use? Potential for 

exposed soil during the times OSV use 

could occur? Is there potential for soil 

disturbance associated with OSV use?

Yes, there is potential for impacts from OSV 

use. Snow depth and density can vary 

considerably, especially in the spring and 

fall. OSV use can cause rutting on 

underlying roads and trails, soil disturbance 

to streambanks at crossings and in areas 

without adequate snow depth.

This trail is located on native surface roads 

and through wetlands and streams without 

an underlying road. 

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to 

soils and vegetation, which will protect water 

quality.

The native surface road should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) 

of the road surface during runoff. Sediment 

transport off of the road surface should be 

minimized or the road should have aggregate 

placed as well as additional drainage features.

Does the trail or area contain sensitive 

riparian areas, for example wet 

meadows, fens, etc.?

Yes, this trail is located adjacent to several 

large wetland/meadow complexes, and has 

several stream crossings. This trail crosses 

several wetlands and streams, including 

where it does not have an underlying road.

The road should have adequate drainage that 

directs runoff away from the stream channels 

and riparian areas. Adequate snow depth 

should exist when travel is allowed on this 

OSV trail to ensure the area where the trail 

crosses riparian, wetlands and streams (in the 

headwaters of Howard Creek), is not 

damaged. Adequate Snow depth should 

minimize damage to willows and riparian 

shrubs and prevent damage to the underlying 

wetland soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic mine 

site or sites?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

199

CRITERIA POTENTIAL EFFECT INDICATORS If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Could OSV use affect a municipal water 

system comprised of a small reservoir 

that goes directly into a local community 

water supply?

No N/A

Minimize damage to 

vegetation and other 

forest resources.

Are TES plants known to occur in or 

around the trail or area under 

consideration that could potentially be 

affected by OSV use? 

No. N/A 

Would the trail or area include 

designated botanical areas (SIA, RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize 

harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or goshawk 

nest sites?

No. N/A 

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No N/A

Does the trail or area contain key deer 

winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes. The Howard Creek OSV Trail crosses 

known federally endangered Sierra Nevada 

yellow-legged frog (SNYLF) occupied and 

designated critical habitat.

OSV use has the potential to disrupt and/or 

degrade aquatic habitat by damaging 

streambanks and causing sedimentation if 

use occurs when snow depth and density 

are inadequate as evidenced by exposed 

soil and open waterways. OSV use in areas 

with exposed soil can lead to reduced water 

quality from soil erosion and sedimentation.

Sierra Nevada yellow-legged frog suitable 

habitat will be protected by only allowing OSV 

use to occur when there is adequate snow 

depth to protect the frogs and their habitats.
Over-snow Vehicle Use Designation

Tahoe National Forest

200

CRITERIA POTENTIAL EFFECT INDICATORS If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Does the trail or area contain habitat for 

marten, wolverine, or other sensitive 

forest carnivores?

Yes, the Howard Creek OSV Trail crosses 

suitable habitat for sensitive carnivore 

species, including marten and wolverine.

OSV use where the trail does not overlay an 

existing road has the potential to adversely 

affect subnivean habitat used by wolverine, 

marten and their prey species, such as small 

mammals. 

OSV use can result in snow compaction and 

loss of subnivean habitat particularly when 

snow depth is inadequate. 

• OSV use is allowed only when there is 

adequate snow cover to prevent disruption 

to subnivean habitat important to prey 

species for the marten, wolverine or other 

sensitive forest carnivores.

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62): Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, offhighway vehicle route, trail, and road uses 

(including road maintenance). Evaluate 

proposals for new roads, trails, off highway 

vehicle routes, and recreation and other 

developments for their potential to disturb 

den sites. 

• Wolverine Detections (SNFPA ROD S&G 

32, pg. 54): When verified (wolverine) 

sightings occur, conduct an analysis to 

determine if activities within 5 miles of a 

detection have a potential to affect the 

species. If necessary, apply a limited 

operating period from January 1 to June 30 

to avoid adverse impacts to pot4ential 

breeding. Evaluate activities for a 2-year 

period for detections not associated with a 

den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts 

between motor 

vehicle use and 

existing or proposed 

recreational uses of 

NFS lands 

Would OSV use of this trail cause 

conflicts with non-motorized visitors’ 

desire for solitude and quiet recreation 

(for example, PCT, Wilderness, Wild & 

Scenic Rivers, ski areas (cross-country, 

downhill), and/or IRAs?

No. N/A

Conflicts between 

motor vehicle use 

and existing or 

Does the trail abut a wilderness area or 

National Park managed by other 

agencies?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

201

CRITERIA POTENTIAL EFFECT INDICATORS If yes, would OSV use of the trail or area 

cause adverse effects? If so, how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

proposed 

recreational uses of 

neighboring Federal 

lands

Does the trail abut a non-motorized 

area on adjacent national forest or other 

Federal lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring Federal 

lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts 

among different 

classes of motor 

vehicle uses of NFS 

lands. 

Does this trail allow wheeled motor 

vehicle use over snow? If so, does this 

affect safety and winter management of 

this area?

No N/A

Does this trail cross or contain plowed 

roads allowing vehicle use? Are road 

crossings allowed by OSVs?

No. N/A

Minimize conflicts 

among different 

classes of motor 

vehicle uses of other 

neighboring Federal 

lands. (Fast –

snowmobiles, 

tracked motorcycles. 

Slow – tracked 

ATVs, UTVs, 4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 50 

inches wide and over 50 inches wide? 

Is this potentially creating conflicts?

Yes. Use by tracked over-snow vehicles 

over 50 inches is not common, but is 

expected to increase over time.

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider 

compatibility of 

motor vehicle use 

with existing 

conditions in 

populated areas, 

taking into account 

sound, emissions, 

and other factors.

Is the trail adjacent to neighborhoods 

and communities? 

Is the trail adjacent to recreation 

residences used during the winter?

If so, is OSV use of this trail compatible 

with distinct characteristics of the 

community?

No.

No.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

202

Humbug Tie Trail (SNO-12E13)

This 0.8-mile designated OSV trail, which is available for grooming, overlays a road bed. The Trail creates two loops in conjunction by 

bisecting the Humbug OSV Trail (Sno-12E14). This trail provides an easy OSV riding opportunity close to the China Wall Winter Trailhead. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil and 

water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? Is 

there potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, soil 

disturbance to streambanks at crossings 

and in areas without adequate snow 

depth and density.

This trail is located on a motorized trail.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

This trail should have adequate drainage to 

minimize concentrated snowmelt runoff.

Does the trail contain sensitive 

riparian areas, for example wet 

meadows, fens, etc.?

No. This trail is primarily located on a 

ridgetop and is not located near any 

streams, meadows or wetlands.

N/A

Does the trail drain into a 303(d)-

listed waterbody?

No N/A

Does the trail have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur in 

or around the trail under 

consideration that could potentially 

be affected by OSV use? 

No N/A

Does the trail include designated 

botanical areas (SIA, RNA)?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

203

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail encompass 

California spotted owl, and/or 

goshawk nest sites?

No N/A

Does the trail encompass sandhill 

crane nest sites?

No N/A

Does the trail encompass known 

bald eagle nest sites?

No N/A

Does the trail contain key deer 

winter range?

No. N/A

Minimize significant 

disruption of wildlife habitats.

Does the trail contain TES aquatic 

habitat and/or designated critical 

habitat?

No N/A

Does the trail contain habitat for 

marten, wolverine, or other 

sensitive forest carnivores?

No N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill) and/or IRAs?

Yes. There is a potential of conflict due 

to the popularity of the loop trail for 

cross-country skiers and snowshoers 

because of its close proximity to the 

China Wall Winter Trailhead.

The North Fork American Wild and 

Scenic River and the North Fork 

American River Inventoried Roadless 

Area (IRA) lies north of the trail, 

approximately 1⁄4 mile away at its closest 

point from the River’s canyon. Due to the 

lack of winter recreation use of the inner 

canyon near the designated OSV Trail, 

there are no known winter-use conflicts.

OSVUM would be posted at the China Wall Winter 

Trailhead. 

Trail etiquette information would be on the 

OSVUM.
Over-snow Vehicle Use Designation

Tahoe National Forest

204

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses of 

neighboring Federal lands

Does the trail abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands.

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles 

over 50 inches wide is not common, but 

is expected to increase over time.

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV trail 

system. Experience has shown there is adequate 

width for combined use of the snow-trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail o adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

205

Humbug Trail (SNO-12E14)

This 4.7- mile designated OSV trail, which is available for grooming, overlays the Humbug Road System (Forest Service Roads 66 and 66-18). 

This Trail is an easy loop trail close to the China Wall Winter Trailhead that connects to the Foresthill Divide OSV Trail (Sno-12E15).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on a native surface 

road. 

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality. 

The native surface road that this trail uses 

should have adequate drainage to minimize 

rilling and disperse snowmelt runoff.

Does the trail contain sensitive 

riparian areas, for example wet 

meadows, fens, etc.?

Yes, this trail has two stream 

crossings.

This trail is primarily located on a ridgetop; 

however, it crosses two streams. The native 

surface road at these stream crossings should 

have adequate drainage that directs runoff away 

from the stream channels.

Does the trail drain into a 

303(d)-listed waterbody?

No N/A

Does the trail have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

206

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail under 

consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Would the trail include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail encompass 

California spotted owl, and/or 

goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail encompass known 

bald eagle nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail contain TES 

aquatic habitat and/or 

designated critical habitat?

Yes. The Humbug OSV Trail crosses 

California red-legged frog (CRLF) 

suitable habitat, but not occupied 

habitat.

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

CRLF suitable habitat would be protected by 

only allowing OSV use to occur when there is 

adequate snow depth to prevent damage to 

aquatic habitats including, soil, water and 

riparian vegetation along the Humbug Trail.

Does the trail contain habitat for 

marten, wolverine, or other 

sensitive forest carnivores?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

207

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill)?

Yes. There is a potential of conflict due 

to the popularity of the loop trail for 

cross-country skiers and snowshoers 

because of its proximity to the China 

Wall Winter Trailhead.

The North Fork American Wild and 

Scenic River lies north of the groomed 

trail, approximately 1⁄4 mile away at the 

trail’s closest point from the river’s 

canyon. Due to the lack of snow and 

use of the inner canyon near the 

motorized Sno-trail, there are no 

known winter recreation use conflicts.

Display a copy of the OSVUM at the China Wall 

Winter Trailhead.

The OSVUM would include trail etiquette 

information.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

208

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands.

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles over 50 inches is not 

common, but is expected to increase 

over time.

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

209

Independence Lake Trail (SNO-15E35)

This 2.2-mile designated OSV trail, which is available for grooming, overlays Forest Service Road 07-10-15. The entire trail also overlays Sierra 

County Roads 351 and 260 and a short section of Nevada County Road 787, for a total of 6.5 miles, starting and ending on the Prosser Creek 

connector OSV Trail. The Independence Lake Trail passes close to Independence Lake (NE side).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on native surface 

roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native surface road that this trail overlays 

should have adequate drainage to disperse 

runoff and to prevent significant erosion (large 

rills or small gullies) of the road surface during 

runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This area also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (e.g. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas. 

The roads should have adequate drainage that 

directs runoff away from the stream channels 

and riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

210

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No N/A 

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, the Independence Lake Trail 

passes through the Liberty northern

goshawk PAC and is within 1⁄4 mile of 

the activity center. Goshawks typically 

initiate nesting in February when OSV 

activities have the potential to disrupt 

breeding activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season limited operating 

period if there is documented evidence of 

disturbance to the nest site from February 15 

through September 15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

211

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. The Independence Lake Trail 

crosses federally endangered Sierra 

Nevada yellow-legged frog (SNYLF) 

designated critical habitat.

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

Sierra Nevada yellow-legged frog will be 

protected by only allowing OSV use to occur 

when there is adequate snow depth to protect 

the frogs and their habitats.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Independence Lake Trail 

traverses suitable habitat for the 

Pacific marten and wolverine. There is 

a verified wolverine detection in the 

vicinity of the trail.

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62). Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.
Over-snow Vehicle Use Designation

Tahoe National Forest

212

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No. Non-motorized users of this 

groomed route (cross-country skiers, 

dog sleds, snow shoe hikers) are 

aware this is a designated OSV trail, 

groomed with State OHV funds.

The OSVUM would be displayed at the Little 

Truckee and Prosser Winter Trailheads.

The OSVUM would include information about 

trail etiquette.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No. N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands.

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths occurs on this 

trail (grooming machine, snow tractors, 

snowmobile, tracked motorcycles, 

tracked ATVs, tracked UTVs, tracked 

4x4s)

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

213

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No. There are a few private residences 

that use their homes year-round. They 

access their homes using OSVs.

No, the Trail is not adjacent to winter 

recreation residences using during the 

winter.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

214

Jackson Meadow - Little Truckee Trail (SNO-15E07)

This 14.6-mile designated OSV trail, which is available for grooming, overlays the paved Jackson Meadows Road (Forest Service Road 07). 

This Trail is the main groomed OSV route out of the Little Truckee Summit Winter Trailhead, and is typically groomed two to three times a 

week (pending conditions). This designated OSV Trail crosses the Pacific Crest Trail (PCT) near Jackson Meadows Reservoir.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on a paved road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The paved road that this trail overlays should 

have adequate drainage to disperse runoff. 

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This trail also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (e.g. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas.

The paved road should have adequate drainage 

that directs runoff away from the meadow / 

wetland areas and away from the stream 

channels and riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

215

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Does the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, the Jackson Meadow-Little 

Truckee Trail passes by three northern

goshawk PACs. The trail is within 1⁄4 

mile of a goshawk activity center at 

Jackson Meadows. 

Generally, goshawks initiate breeding 

in February or March. OSV use during 

the goshawk breeding season has the 

potential to disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season limited operating 

period if there is documented evidence of 

disturbance from February 15 through 

September 15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

216

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes, the Jackson Meadow-Little 

Truckee Trail crosses federally 

endangered Sierra Nevada yellowlegged frog (SNYLF) suitable habitat. 

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

Sierra Nevada yellow-legged frog suitable 

habitat will be protected by only allowing OSV 

use to occur when there is adequate snow depth 

to protect the frogs and their habitats.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Jackson Meadow-Little 

Truckee Trail passes through suitable 

marten and wolverine habitat. Verified 

wolverine detections are located near 

the Trail.

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62). Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

217

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

Yes. There is a small potential for 

conflict between OSV use and nonmotorized visitor use where the OSV 

Trail crosses the Pacific Crest Trail 

(PCT) at one location near Jackson 

Meadows Reservoir.

The PCT crossing is designated under the 

proposed action. The designated PCT crossing 

near Jackson Meadows Reservoir would be 

shown on the OSVUM.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

218

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, 

tracked motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths is common place 

on this trail (grooming machine, snow 

tractors, snowmobile, tracked 

motorcycles, tracked ATVs, tracked 

4x4s)

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

219

Lower Ford Point Trail (SNO-12E18)

This 1.3-mile designated OSV trail, which is available for grooming, overlays Forest Service Road 13-14. This Trail creates two loops by 

connecting the Foresthill Divide OSV Trail (Sno-12E15) and American Hill OSV Trail (Sno-12E17).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

No N/A

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

220

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

If OSV use occurs when snow 

levels are low (i.e. during the 

shoulder seasons), OSV use 

can result in compaction of 

snow, crushing of Sensitive 

plants and soil, potentially 

causing direct mortality and/or 

loss of vigor and productivity.

Yes. The Lower Ford Point OSV Trail 

passes through two Sensitive plant 

occurrences: Lewisia kelloggii ssp. 

hutchisonii and Poa sierrae

If OSV use occurs when snow depth 

and density are inadequate (e.g. 

during the shoulder seasons), OSV 

use can result in compaction of snow, 

crushing of Sensitive plants, potentially 

causing direct mortality and/or loss of 

vigor and productivity.

Sensitive plants occurrences within the Lower 

Ford Point OSV Trail will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to 

plants and prevent soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

221

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill), or 

IRAs)?

No. Monitoring has shown that this trail 

is far enough away from the China 

Wall Winter Trailhead that nonmotorized winter use of the Trail is 

rare. 

N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, 

tracked motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles wider than 50 inches is not 

common, but is expected to increase 

over time.

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Over-snow Vehicle Use Designation

Tahoe National Forest

222

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

223

Martis Peak Trail (SNO-17E02)

The Martis Peak Trail is a designated OSV trail located on the border of the Tahoe National Forest and Lake Tahoe Basin Management Unit. 

Short segments of the Trail (totaling 1.8 miles) lie on the Tahoe National Forest. The Trail overlays Forest Service Road 267-10. The Martis 

Peak Trail heads directly east from near Brockway Summit on State Highway 267, which is plowed in winter. The Trail follows the Forest 

Service road system to the Martis Peak Lookout.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on a bituminous 

surface road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The road this trail overlays should have 

adequate drainage to disperse runoff and to 

prevent significant erosion (large rills or small 

gullies) of the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. This trail has multiple stream 

crossings of riparian areas.

The road should have adequate drainage that 

directs runoff away from meadow, stream 

channels and riparian areas.

Does the trail or area drain into a 

303(d)-listed waterbody?

Yes. Streams crossed by this trail flow 

into the Truckee River, which is listed 

as impaired for sediment.

Adequate snow depth should be present when 

this trail is used to prevent rutting or erosion of 

the road. The road should have adequate 

drainage to minimize the sediment from the road 

that reaches stream channels located near the 

OSV trail.

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

224

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

that goes directly into a local 

community water supply?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Does the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. The Martis Peak Trail is adjacent 

to suitable Sierra Nevada yellowlegged frog habitat. 

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

Sierra Nevada yellow-legged frog habitat will be 

protected by only allowing OSV use to occur 

when there is adequate snow depth to protect 

the frogs and their habitats.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

225

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill), IRAs)?

No. N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No. N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

Yes, this trail ends near the Mount 

Rose Wilderness on the HumboldtToiyabe National Forest.

The Mt. Rose Wilderness boundary is signed. 

Mt. Rose Wilderness (Humboldt-Toiyabe 

National Forest) is not designated for OSV use.

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No. N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No, starts at State Highway 267 

(Caltrans plowed in winter).

N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

Yes. Limited use by tracked over-snow 

vehicles of all widths occurs on this 

trail (grooming machine, snow tractors, 

snowmobile, tracked motorcycles, 

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 
Over-snow Vehicle Use Designation

Tahoe National Forest

226

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

50 inches wide? Is this 

potentially creating conflicts?

tracked ATVs, tracked UTVs, tracked 

4x4s).

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

227

Meadow Lake Loop Trail (SNO-13E86)

This 6.2-mile designated OSV trail, which is available for grooming, overlays Forest Service Road 86 and provides a loop opportunity. (The 

Trail also overlays Nevada County 843 Road. The entire Meadow Lake Loop Trail is 24 miles.) The east side of the loop is typically groomed 

once a week, depending on snow conditions, and is a popular destination. The west side of the loop is groomed two to four times each season. 

The Trail crosses the Pacific Crest Trail (PCT).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on native and 

graveled surface roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native and graveled surface roads should 

have adequate drainage to disperse runoff and 

to prevent significant erosion (large rills or small 

gullies) of the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This trail also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (i.e. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas.

The roads should have adequate drainage that 

directs runoff away from the meadow / wetland 

areas and from the stream crossings and 

riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

228

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Does the area have a hydraulic

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use?

No. N/A

Does the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes, the Meadow Lake Loop Trail 

crosses federally endangered Sierra 

Nevada yellow-legged frog (SNYLF) 

suitable habitat. 

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

Sierra Nevada yellow-legged frog suitable 

habitat will be protected by only allowing OSV 

use to occur when there is adequate snow depth 

to protect the frogs and their habitats.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

229

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Meadow Lake Trail passes

through suitable marten and wolverine 

habitat. Several marten detections are 

located within close proximity to the 

trail.

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62). Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

Yes. There is a small potential for 

conflict where the groomed trail 

crosses the Pacific Crest National 

Scenic Trail (PCT) at one location near 

the intersection with the White Rock 

Lake 86-70 road.

The PCT crossing is designated under the 

proposed action. The designated PCT crossing 

would be shown on the OSVUM.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

230

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

national forest or other Federal 

lands?

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

Vs, UTVs, 4WDs)

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths occurs on this 

trail (grooming machine, snow tractors, 

snowmobile, tracked motorcycles, 

tracked ATVs, tracked 4x4s).

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

231

Mosquito Ridge Trail (SNO-12E16)

This 46.9-mile designated OSV trail, segments of which are available for grooming, overlays Forest Service Road 96 and provides access to the 

French Meadows Reservoir area. This trail overlays a paved road.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The paved road that this trail overlays should 

have adequate drainage to disperse runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

The paved road should have adequate drainage 

that directs runoff away from stream channels 

and riparian areas.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

232

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

Yes. The Mosquito Ridge OSV Trail 

passes through a sensitive plant 

occurrence, Phacelia stebbinsii. 

If OSV use occurs when snow depth 

and density are inadequate (e.g. 

during the shoulder seasons), OSV 

use can result in compaction of snow, 

crushing of Sensitive plants, potentially 

causing direct mortality and/or loss of 

vigor and productivity.

Sensitive plant occurrences within the Mosquito 

Ridge OSV Trail will be protected by allowing 

OSV use to occur only when there is adequate 

snow depth to prevent damage to plants and 

prevent soil compaction.

Does the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes. The Mosquito Ridge Trail is within 

1⁄4 mile of California spotted owl and 

northern goshawk nest sites.

Generally, goshawks and spotted owls 

initiate breeding in February and 

March, respectively. OSV use during 

the breeding season has the potential 

to disturb nesting owls and goshawks 

and could potentially disrupt nesting 

activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season limited operating 

period if there is documented evidence of 

disturbance to nest site from the above as 

follows: California spotted owl – March 1 through 

August 15 and northern goshawk – February 15 

through September 15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

Yes. The lower portion of the Mosquito 

Ridge OSV Trail crosses key deer 

winter range. 

OSV use must remain on the designated trail to 

avoid displacement of deer. Use of the lower trail 

is rare, due to its low elevation and infrequent 

snowpack.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

233

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. The Mosquito Ridge OSV Trail 

crosses Sierra Nevada yellow-frog 

(SNYLF) suitable habitat above 

4,000 feet, but not occupied habitat.

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

SNYLF suitable habitat area would be protected 

by only allowing OSV use to occur when there is 

adequate snow depth to prevent damage to 

aquatic habitats including, soil, water and 

riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No. Monitoring has shown that this trail 

is far enough away from the China 

Wall Winter Trailhead that nonmotorized winter use of the trail is rare. 

Some infrequent use near Foresthill is 

possible during lower elevation 

snowfall.

N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring

Federal lands?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

234

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, 

tracked motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles over 50 inches is not 

common, but is expected to increase 

over time.

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snow 

trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community

No

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

235

Pass Creek Loop Trail (SNO-13E70)

This 7.6-mile designated OSV trail, which is available for grooming, provides a loop opportunity. The Trail overlays Forest Service Road 70, 

and has a short section where the Pacific Crest Trail overlays the road. The Trail has two bridge crossings of Pass Creek. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on a native surface 

road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native surface road that this trail overlays 

should have adequate drainage to disperse 

runoff and to prevent significant erosion (large 

rills or small gullies) of the road surface during 

runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This trail also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (e.g. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas.

The road should have adequate drainage that 

directs runoff away from the meadow / wetland 

areas and from the stream crossings and 

riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

236

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Does the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, the Pass Creek Loop Trail passes 

through several northern goshawk 

PACs. The trail is within 1⁄4 mile of a 

goshawk activity center. 

Generally, goshawks initiate breeding 

in February. OSV use during the 

goshawk breeding season has the 

potential to disrupt nesting activities.

SNFA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season limited operating 

period if there is documented evidence of 

disturbance from February 15 through 

September 15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

237

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes, the Pass Creek Loop Trail 

crosses federally endangered Sierra 

Nevada yellow-legged frog (SNYLF) 

suitable habitat. 

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

Sierra Nevada yellow-legged frog suitable 

habitat will be protected by only allowing OSV 

use to occur when there is adequate snow depth 

to protect the frogs and their habitats.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Pass Creek OSV Trail passes 

through suitable marten and wolverine 

habitat. Verified wolverine detections 

are located along the Trail.

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62). Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.
Over-snow Vehicle Use Designation

Tahoe National Forest

238

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

Yes. There is a small potential for 

conflict where the OSV Trail shares a 

section of the Pacific Crest National 

Scenic Trail (PCT) at one location near 

Jackson Meadows Reservoir. The PCT 

is located on the trail’s underlying road 

(Forest Service Road 70) for 

approximately 500 feet.

The PCT crossing is designated under the 

proposed action. The designated PCT crossing 

would be shown on the OSVUM.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands.

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths occurs on this 

trail (grooming machine, snow tractors, 

snowmobile, tracked motorcycles, 

tracked ATVs, tracked 4x4s)

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

239

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

240

Prosser Creek Trail (SNO-15E89)

This 13.4-mile designated OSV trail, which is available for grooming, overlays Forest Service Roads 17-10, 878-01, 89-36 and 89-34. It 

connects the Jackson Meadow-Little Truckee OSV Trail from near the Little Truckee Summit Trailhead to the Prosser Hills OSV Trailhead. 

This trail is typically groomed once per week during the winter, depending on snow accumulation. The Trail alignment includes three bridge 

crossings: Little Truckee River, Sagehen Creek, and Prosser Creek. The Prosser Creek Trail passes close to the Sagehen Experimental Forest. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on a native surface 

road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native surface road that this trail overlays 

should have adequate drainage to disperse 

runoff and prevent significant erosion (large rills 

or small gullies) of the road surface during 

runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This area also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (e.g. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas. 

The road should have adequate drainage that 

directs runoff away from the wetland / meadow 

areas, stream channels and riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

241

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Does the trail or area drain into a 

303(d)-listed waterbody?

Yes. Streams crossed by this trail flow 

into the Truckee River, which is listed 

as impaired for sediment.

Adequate snow depth should be present when 

this trail is used to prevent rutting or erosion of 

the native surface road surface. The road should 

have adequate drainage to minimize sediment 

from the road reaching stream channels located 

near the OSV trail.

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A 

Does the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

242

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. The Prosser Creek Trail crosses 

federally endangered Sierra Nevada 

yellow-legged frog (SNYLF) suitable, 

occupied, and designated critical 

habitat.

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

Sierra Nevada yellow-legged frog will be 

protected by only allowing OSV use to occur 

when there is adequate snow depth to protect 

the frogs and their habitats.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

Yes, there is potential for conflicts on 

the trail section near the Sagehen 

Experimental Forest.

The Sagehen Experimental Forest is not 

designated for OSV use under the proposed 

action.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

243

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

Yes. The Prosser Creek OSV Trail 

crosses the special use permit (SUP) 

access into the Sagehen Field Station 

off State Highway 89 (plowed in 

winter). The Prosser Creek OSV Trail 

lies in close proximity to State Highway 

89 along its length.

Trail users should use caution at the Sagehen 

Field Station Road crossing of the Prosser 

Creek OSV Trail.

If OSVs cross Highway 89 to access the Prosser 

Creek Connector Trail the users will decide 

where it is safe to cross.

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands.

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths is common place 

on this trail (grooming machine, snow 

tractors, snowmobile, tracked 

motorcycles, tracked ATVs, tracked 

4x4s)

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

244

Prosser Hill Trail (SNO-16E29)

This short 1-mile designated OSV trail was originally marked as a cross-country ski route, and has never been groomed. The Prosser Hill Winter 

Trail begins at the Prosser Hill OSV Staging Area and continues south for approximately 1 mile, paralleling State Highway 89.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on a native surface 

road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native surface road should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. This trail has multiple stream 

crossings with riparian areas and is 

located near one large meadow / 

wetland

The road that this OSV trail overlays should 

have adequate drainage that directs runoff away 

from meadow, stream channels and riparian 

areas.

Does the trail or area drain into a 

303(d)-listed waterbody?

Yes. Streams crossed by this trail flow 

into the Truckee River, which is listed 

as impaired for sediment.

Adequate snow depth should be present when 

this trail is used to prevent rutting or erosion of 

the native surface road. The road should have 

adequate drainage to minimize sediment from 

the road reaching stream channels located near 

the OSV trail.

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

245

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No.
Over-snow Vehicle Use Designation

Tahoe National Forest

246

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No. N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. However, the Prosser Hill Trail is 

in very close proximity to State 

Highway 89.

If OSVs cross Highway 89 to access the Prosser 

Hill Trail the users will decide where it is safe to 

cross.

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, 

tracked motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths is common place 

on this trail (snowmobile, tracked 

motorcycles, tracked ATVs, tracked 

UTVs, tracked 4x4s)

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

247

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

248

Rattlesnake Trail (SNO-13E51)

This 10.1-mile designated OSV trail overlays Forest Service Roads 85 and 85-13. The Trail creates a connection from Placer County Road 9142 

to Lola Montez Lake.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on native surface 

roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native surface roads should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This trail also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (e.g. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas.

The roads should have adequate drainage that 

directs runoff away from Rattlesnake Creek and 

the meadow / wetland areas. 

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

249

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Does the trail or area include 

designated botanical areas (SIA, 

RNA)? 

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, the Rattlesnake OSV Trail passes 

through a northern goshawk PAC, 

however, the most recent known 

activity center is more than 1/4 mile 

from the trail.

Goshawks generally initiate breeding 

in February. OSV use during the 

goshawk breeding season has the 

potential to disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season limited operating 

period from February 15 through September 15 

if there is documented evidence of disturbance.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

250

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes, the Rattlesnake OSV Trail 

crosses federally endangered Sierra 

Nevada yellow-legged frog (SNYLF) 

suitable, occupied habitat and 

designated critical habitat. 

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

Sierra Nevada yellow-legged frog habitat will be 

protected by only allowing OSV use to occur 

when there is adequate snow depth to protect 

the frogs and their habitats.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Rattlesnake Trail passes 

through suitable marten and wolverine 

habitat. There are several marten 

detections located near the trail.

Additionally, a verified wolverine 

detection is within 1⁄2 mile of the Trail.

• Marten Den Sites (SNFPA ROD - S&G 89,

pg. 62). Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

251

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill), and/or 

IRAs?

No.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50”wide? Is this potentially 

creating conflicts?

Yes. Use by tracked over-snow 

vehicles over 50 inches wide is not 

common, but is expected to increase 

over time.

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Over-snow Vehicle Use Designation

Tahoe National Forest

252

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

253

Ridge Loop Trail (SNO-13E45)

This 6.1-mile designated OSV trail, which is available for grooming, creates a loop opportunity. The Ridge Loop Trail overlays Forest Service 

Road 12-45, and somewhat parallels the Yuba-Webber OSV Trail located downhill. This OSV trail is typically groomed once per week, 

depending on snow conditions. The Ridge Loop Trail begins at the Bonta Saddle intersection (Yuba-Webber and Treasure Mountain Loop OSV 

Trails) and ends at the Yuba-Webber OSV Trail, near the intersection with the OSV trail that overlays Forest Service Road 54. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on native surface 

roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native surface roads should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes, this trail is adjacent to one 

meadow / wetland area.

The roads that this trail overlays should have 

adequate drainage to direct runoff away from the 

meadow / wetland areas. 

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

254

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Ridge Loop Trail passes 

through suitable marten and wolverine 

habitat. Additionally a verified 

wolverine detection is within 1⁄4 mile of 

the trail. 

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62). Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

255

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No. N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths occurs on this 

trail (grooming machine, snow tractors, 

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Over-snow Vehicle Use Designation

Tahoe National Forest

256

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

snowmobile, tracked motorcycles, 

tracked ATVs, tracked 4x4s)

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

257

Rim Loop Trail (SNO-13E42)

This 2.8-mile designated OSV trail, which is available for grooming, provides a loop opportunity. The Trail overlays the Forest Service 12-28 

Road, starting and ending on the Yuba Webber OSV Trail. This trail is groomed two to four times each season on average. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on a native surface 

road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native surface road should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This trail also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (e.g. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas.

The road that this trail overlays should have 

adequate drainage that directs runoff away from 

the meadow / wetland areas and away from the 

stream channels and riparian areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

258

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes, the Rim Loop Trail crosses 

federally endangered Sierra Nevada 

yellow-legged frog (SNYLF) suitable 

habitat.

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

Sierra Nevada yellow-legged frog suitable 

habitat will be protected by only allowing OSV 

use to occur when there is adequate snow depth 

to protect the frogs and their habitats.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

259

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

reduced water quality from soil erosion 

and sedimentation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Rim Loop Trail passes 

through suitable marten and wolverine 

habitat. Additionally a verified 

wolverine detection is within 1⁄4 mile of 

the trail. 

• Marten Den Sites (SNFPA ROD S&G 89, pg. 

62). Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No. N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

260

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths occurs on this 

trail (grooming machine, snow tractors, 

snowmobile, tracked motorcycles, 

tracked ATVs, tracked UTVs, and 

tracked 4x4s).

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

261

Robinson Flat Trail (SNO-13E17)

This 1.3-mile designated OSV trail, which is available for grooming, overlays Forest Service Roads 43 and 43-22. This trail starts from 

Robinson Flat, off the Foresthill Divide OSV Trail (Sno-12E15), and provides OSV access to the Duncan Peak Lookout, a popular destination 

for motorized over-snow vehicle riders. 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on both native 

surface and graveled roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The gravel road that this trail uses should have 

adequate drainage to minimize concentrated 

snowmelt runoff.

The native surface road should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

No. N/A

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

262

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A 

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, the Robinson Flat Trail passes 

through a California spotted owl PAC 

and is within 1⁄4 mile of the activity 

center. 

Spotted owl nesting season initiates in 

March. OSV use during the breeding 

season has the potential to disturb 

nesting owls and could potentially 

disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season limited operating 

period from March 1 through August 15 if there 

is documented evidence of disturbance to the 

nest site.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

263

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill) and/or 

IRAs)?

No. This trail lies adjacent to the 

Duncan Canyon Inventoried Roadless 

Area (IRA). However, monitoring has 

shown that, due to the distance from 

the China Wall Winter Trailhead, nonmotorized winter use of the Trail is 

infrequent, estimated at once or twice 

a month by non-motorized users 

seeking a long-distance experience on 

a groomed trail.

N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No N/A

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

264

CRITERIA POTENTIAL EFFECT

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, 

tracked motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles over 50 inches wide is not 

common, but is expected to increase 

over time.

Over-snow vehicles larger than 50 inches wide 

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community

No.

No.

N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

265

Soda Springs Trail (SNO-14E17)

This 6.4-mile groomed trail overlays the Foresthill Divide Road (a Placer County road with a Forest Service easement for winter snow 

grooming). This trail extends groomed access on the main sno-trail system’s eastern end, out along a ridge that provides views into the North 

Fork American River Canyon. This trail also provides access to French Meadows Reservoir via its connection with the eastern portion of the 

Mosquito Ridge Sno-trail (Sno-12E16). 

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and coverage 

can vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow cover.

This trail is located on native surface 

roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native surface roads should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

No. N/A

Does the trail or area drain into a 

303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

No

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

266

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

If OSV use occurs when snow 

levels are low (i.e. during the 

shoulder seasons), OSV use 

can result in compaction of 

snow, crushing of Sensitive 

plants and soil, potentially 

causing direct mortality and/or 

loss of vigor and productivity.

Yes. The Soda Springs OSV Trail 

passes through two occurrences of 

Sensitive Plant Lewisia kelloggii ssp.

hutchisonii 

If OSV use occurs when snow depth 

and density are inadequate (i.e. during 

the shoulder seasons), OSV use can 

result in compaction of snow, crushing 

of Sensitive plants, potentially causing 

direct mortality and/or loss of vigor and 

productivity.

Sensitive plant occurrences within the Soda 

Springs Trail will be protected by allowing OSV 

use to occur only when there is adequate snow 

depth to prevent damage to plants and prevent 

soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

267

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No. Monitoring has shown that this trail 

is far enough away from the China 

Wall Winter Trailhead that nonmotorized winter use of the trail is rare. 

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No.

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles over 50 inches is not 

common, but is expected to increase 

over time.

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Over-snow Vehicle Use Designation

Tahoe National Forest

268

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community

No.

No.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

269

STERLING TRAIL (SNO-13E53)

This 2.3-mile trail overlays the 85-2 and 85-02-02 roads. The Trail connects to the Rattlesnake OSV Trail.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use?

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and coverage 

can vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow cover.

This trail is located on native surface 

roads.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow density and depth to prevent 

damage to soils and vegetation, which will 

protect water quality.

The native surface road should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This trail also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density 

are inadequate (i.e. during the 

shoulder seasons), OSV use can result 

in compaction of snow, crushing and 

loss of meadow/riparian plants and 

soil, hence, potentially causing 

damage and degradation to sensitive 

meadow/riparian areas.

The road should have adequate drainage that 

directs runoff away from the meadow / wetland 

area. 

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only 

when there is adequate snow depth to prevent 

damage to soils and vegetation.

Include public education/information on the 

OSVUM to discourage OSV use in meadows 

when snow depths are inadequate for resource 

protection.

Does the trail or area drain into a 

303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

270

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No.

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes, the Sterling Trail crosses federally 

endangered Sierra Nevada yellowlegged frog (SNYLF) suitable habitat 

and designated critical habitat. 

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

Sierra Nevada yellow-legged frog habitat will be 

protected by only allowing OSV use to occur 

when there is adequate snow depth to protect 

the frogs and their habitats.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

271

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

reduced water quality from soil erosion 

and sedimentation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Sterling Trail passes through 

suitable marten and wolverine habitat.

A verified wolverine detection is within 

1 mile of the Sterling Trail.

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62): Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill), and/or 

IRAs?

No.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

272

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No.

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50”wide? Is this potentially 

creating conflicts?

Yes. Use by slow over-snow vehicles 

has been very low, but is expected to 

increase overtime as their popularity 

increases.

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail

compatible with distinct 

characteristics of the 

community?

No.

No.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

273

TADPOLE TRAIL (SNO-13E18)

This 3.0-mile groomed OSV trail overlays Forest Service System Roads 88-39 and 88-41. This trail creates a loop off of the Foresthill Divide 

groomed trail (Sno-12E15).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and coverage 

can vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow cover.

This trail is located on two native 

surface roads, one of which is a 

closed, maintenance level 1 road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow density and depth to prevent 

damage to soils and vegetation, which will 

protect water quality.

The native surface roads should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. This trail goes through the edge 

of a meadow / fen complex. There are 

also several other stream crossings 

with riparian areas.

The roads should have adequate drainage that 

directs runoff away from the meadow / fen 

complex and away from the stream channels 

and riparian areas.

Does the trail or area drain into a 

303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

No

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

Yes. The Tadpole OSV Trail passes 

through two Sensitive plant 

Sensitive plants occurrences within the Tadpole 

OSV Trail will be protected by allowing OSV 

use to occur only when there is adequate snow 
Over-snow Vehicle Use Designation

Tahoe National Forest

274

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

potentially be affected by OSV 

use? 

If OSV use occurs when snow 

levels are low (i.e. during the 

shoulder seasons), OSV use 

can result in compaction of 

snow, crushing of Sensitive 

plants and soil, potentially 

causing direct mortality and/or 

loss of vigor and productivity.

occurrences: Botrychium minganense 

and Poa sierra.

If OSV use occurs when snow depth 

and density are inadequate (i.e. during 

the shoulder seasons), OSV use can 

result in compaction of snow, crushing 

of Sensitive plants, potentially causing 

direct mortality and/or loss of vigor and 

productivity.

depth to prevent damage to plants and prevent 

soil compaction.

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes. The Tadpole OSV Trail is within 

1⁄4 mile of California spotted owl and 

northern goshawk nest sites.

Spotted owls and goshawks initiate 

breeding in February and March when 

OSV disturbance during breeding 

season initiation has the potential to 

disrupt nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season Limited Operating 

Period if there is documented evidence of 

disturbance to nest site from the above as 

follows: California spotted owl – March 1 through 

August 15 and northern goshawk – February 15 

through September 15.

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

275

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

No. N/A

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No. Monitoring has shown that this trail 

is far enough away from the China 

Wall Winter Trailhead that nonmotorized winter use of the trail is rare. 

The North Fork American River Wild & 

Scenic River is north of the groomed 

trail, approximately 3⁄4 mile away at its 

closest point from the river’s canyon. 

Due to the lack of snow and absence 

of use of the inner canyon near the 

motorized Sno-trail, there are no 

known winter-use conflicts.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No

Does this trail cross or contain 

plowed roads allowing vehicle 

No.
Over-snow Vehicle Use Designation

Tahoe National Forest

276

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

use? Are road crossings allowed 

by OSVs?

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, 

tracked motorcycles. 

Slow – tracked ATVs, 

UTVs, 4WDs)

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles over 50 inches is not 

common, but is expected to increase 

over time.

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated snowtrail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community

No.

No.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

277

TREASURE MOUNTAIN LOOP TRAIL (SNO-15E50)

This 16.2-mile groomed trail overlays Forest Service 05 and 15 roads, starting at the main Little Truckee Summit Trailhead and ending at the 

Bonta Saddle (where the Yuba-Webber Trail and Ridge Loop Trail intersect). The Treasure Mountain Loop Trail is typically groomed once a 

week, depending on winter snow accumulations and funding. Start of the groomed trail at Little Truckee Summit is also the base of operations 

for the Eagle Ridge Snowmobile Outfitter Guide Service (operating under a Tahoe National Forest special use permit since the late 1980s).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and coverage 

can vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow cover.

This trail is located on a native surface 

road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The native surface roads should have adequate 

drainage to disperse runoff and to prevent 

significant erosion (large rills or small gullies) of 

the road surface during runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

Yes. This trail has multiple stream 

crossings with riparian areas and is 

located near two meadow / wetland 

areas.

The roads should have adequate drainage that 

directs runoff away from the wetland / meadow 

areas, stream channels and riparian areas.

Does the trail or area drain into a 

303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

No

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No
Over-snow Vehicle Use Designation

Tahoe National Forest

278

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use?

No. N/A 

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

Yes, the Treasure Mountain Loop Trail 

passes through the California spotted 

owl and northern goshawk PACs, and 

is within 1⁄4 mile of the two goshawk 

activity centers. Goshawks and spotted 

owls initiate nesting in February or 

March when OSV activities have the 

potential to disrupt breeding activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and 

road uses (including road maintenance). 

Evaluate developments for their potential to 

disturb nest site.

Implement a breeding season Limited Operating 

Period if there is documented evidence of 

disturbance to the nest site from February 15 

through September 15 (northern goshawk) or 

March 1 through August 15 (California spotted 

owl).

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No. N/A

Does the trail or area contain 

key deer winter range?

No. N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

279

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes. The Treasure Mountain Loop 

Trail crosses federally endangered 

Sierra Nevada yellow-legged frog 

(SNYLF) suitable habitat.

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

Sierra Nevada yellow-legged frog habitat will be 

protected by only allowing OSV use to occur 

when there is adequate snow depth to protect 

the frogs and their habitats.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Treasure Mountain Loop Trail 

traverses suitable habitat for the 

Pacific marten and wolverine. There 

are verified wolverine detections along 

the trail.

•

• Marten Den Sites (SNFPA ROD - S&G 89, 

pg. 62): Mitigate impacts where there is 

documented evidence of disturbance to the 

den site from existing recreation, off-highway 

vehicle route, trail, and road uses (including 

road maintenance). Evaluate proposals for 

new roads, trails, off highway vehicle routes, 

and recreation and other developments for 

their potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 32, 

pg. 54): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary, 

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

pot4ential breeding. Evaluate activities for a 

2-year period for detections not associated 

with a den site.
Over-snow Vehicle Use Designation

Tahoe National Forest

280

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

No, occasional use by cross-country 

skiers.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No.

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands.

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths occurs on this 

trail (grooming machine, snow tractors, 

snowmobile, tracked motorcycles, 

tracked ATVs, tracked UTVs, tracked 

4x4s)

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

281

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No, approximately 2 miles from the 

small community of Sierraville.

Residents live year-round in this rural 

community, and the distinct 

characteristics of this community are 

compatible with motorized uses of all 

types.

No.
Over-snow Vehicle Use Designation

Tahoe National Forest

282

Texas Hill/Mears

This 3.8-mile designated OSV trail overlays Forest Service Road 19. A short distance from Interstate 80, this Trail provides access over a paved 

and gravel road through elevations under 5,000 feet (4,600 – 5,000 feet), with potentially poor snow conditions, to connect to, and between, 

higher elevations and deeper snow in the Foresthill North Area.

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil and 

water quality.

Are there potential impacts to soil 

and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? Is 

there potential for soil disturbance 

associated with OSV use?

Yes, there is potential for impacts on soil 

and water from OSV use. Snow depth 

and density can vary considerably, 

especially in the spring and fall. OSV 

use can cause rutting on underlying 

roads and trails and soil disturbance to 

streambanks at stream crossings and in 

areas without adequate snow depth and 

density.

This trail is located on a bituminous 

surface road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality. 

The surfaced road has low risk of erosion during 

spring runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, etc.?

Yes. There are mapped meadows and 

wetlands designated by the U.S. Fish 

and Wildlife Service National Wetlands 

Inventory. This area also contains 

sensitive riparian areas. If OSV use 

occurs when snow depth and density are 

inadequate (e.g. during the shoulder 

seasons), OSV use can result in 

compaction of snow, crushing and loss of 

meadow/riparian plants and soil, hence, 

potentially causing damage and 

degradation to sensitive meadow/riparian 

areas.

Meadows, wetlands and riparian areas will be 

protected by allowing OSV use to occur only when 

there is adequate snow depth to prevent damage 

to soils and vegetation.

Does the trail or area drain into a 

303(d)-listed waterbody?

No N/A
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Tahoe National Forest

283

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Does the area have a hydraulic 

mine site or sites?

No N/A

Could OSV use affect a municipal 

water system comprised of a small 

reservoir that goes directly into a 

local community water supply?

No N/A

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur in 

or around the trail or area under 

consideration that could potentially 

be affected by OSV use? 

No. N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area encompass 

California spotted owl, and/or 

goshawk nest sites?

Yes. The Texas Hill-Mears Trail crosses 

Northern goshawk and California spotted 

owl PACs. 

Spotted owls initiate breeding in 

February and March when OSV 

disturbance during breeding season 

initiation has the potential to disrupt 

nesting activities.

SNFPA ROD S&G 82 (pg. 61): Mitigate impacts 

where there is documented evidence of 

disturbance to the nest site from existing 

recreation, off highway vehicle route, trail, and road 

uses (including road maintenance). Evaluate 

developments for their potential to disturb nest site.

Implement a breeding season Limited Operating 

Period if there is documented evidence of 

disturbance to nest site from the above as follows: 

California spotted owl – March 1 through August 15 

and Northern goshawk – February 15 through 

September 15.

Does the trail or area encompass 

sandhill crane nest sites?

No. N/A

Does the trail or area encompass 

known bald eagle nest sites?

No. N/A 

Does the trail or area contain key 

deer winter range?

No. N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

284

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

Minimize significant 

disruption of wildlife habitats.

Does the trail or area contain TES 

aquatic habitat and/or designated 

critical habitat?

Yes. The Texas Hill-Mears Trail crosses 

suitable Sierra Nevada yellow-legged 

frog suitable habitat but no SNYLF 

detections are located near the trail.

OSV use has the potential to disrupt 

and/or degrade TES aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when snow 

depth and density are inadequate, as 

evidenced by exposed soil and open 

waterways. OSV use in areas with 

exposed soil can lead to reduced water 

quality from soil erosion and 

sedimentation.

TES aquatic habitat would be protected by only 

allowing OSV use to occur when there is adequate 

snow depth to prevent damage to aquatic habitats 

including, soil, water and riparian vegetation.

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest carnivores?

No. N/A

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring Federal 

lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail cause 

conflicts with non-motorized 

visitors’ desire for solitude and 

quiet recreation (for example, 

PCT, Wilderness, Wild & Scenic 

Rivers, ski areas (cross-country, 

downhill))?

No. Monitoring has shown that this Trail 

is infrequently used by winter nonmotorized recreationists. 

N/A

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses of 

neighboring Federal lands

Does the trail abut a wilderness 

area or National Park managed by 

other agencies?

No N/A

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No N/A

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No N/A
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

285

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what measures 

will be taken to manage OSV use to minimize 

these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

Yes. Due to the low use from either 

wheeled or tracked vehicles in the winter 

and good sight distances, there are no 

known safety issues.

The American River Ranger District will monitor for 

complaints from users and will consider 

management actions should safety become an 

issue in the future.

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No. N/A

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

(Fast – snowmobiles, tracked 

motorcycles. 

Slow – tracked ATVs, UTVs, 

4WDs)

Does this trail receive use by both 

tracked over-snow vehicles under 

50 inches wide and over 50 inches 

wide? Is this potentially creating 

conflicts?

Yes. Use by tracked over-snow vehicles 

over 50 inches is not common, but is 

expected to increase over time.

OSVs wider than 50 inches would not be allowed 

off the designated OSV trail system. Experience 

has shown that there is adequate space for all 

users on the OSV trail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the community?

No, this Trail is not adjacent to 

neighborhoods, communities, or 

recreation residences.

N/A
Over-snow Vehicle Use Designation

Tahoe National Forest

286

Yuba Webber Trail (SNO-13E23)

This 17-mile Designated OSV trail, which is available for grooming, overlays the Forest Service 12 Road, starting at its intersection with the

Jackson Meadows 07 road groomed route and ending at Yuba Pass SnoPark (major winter OSV trailhead). This trail does receive non-motorized 

winter use out of Yuba Pass, although most non-motorized use goes north from Yuba Pass into a portion of Forest Plan Management Area 08 

that is not designated for cross-country OSV use (LRMP, pg. V-108).

Specific Criteria for OSV Designated Trails and Areas (36 CFR 212.55(b))

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b) Specific criteria for designation of trails and areas:

(b)(1) Minimize damage to soil, watershed, vegetation, and other forest resources.

Minimize damage to soil 

and water quality.

Are there potential impacts to 

soil and water from OSV use? 

Potential for exposed soil during 

the times OSV use could occur? 

Is there potential for soil 

disturbance associated with 

OSV use?

Yes, there is potential for impacts from 

OSV use. Snow depth and density can 

vary considerably, especially in the 

spring and fall. OSV use can cause 

rutting on underlying roads and trails, 

soil disturbance to streambanks at 

crossings and in areas without 

adequate snow depth and density.

This trail is located on a graveled road.

Soil and water resources will be protected by 

allowing OSV use to occur only when there is 

adequate snow depth to prevent damage to soils 

and vegetation, which will protect water quality.

The gravel road that this trail uses should have 

adequate drainage to minimize concentrated 

snowmelt runoff.

The road should have adequate drainage to 

disperse runoff.

Does the trail or area contain 

sensitive riparian areas, for 

example wet meadows, fens, 

etc.?

No.

Does the trail or area drain into a 

303(d)-listed waterbody?

No

Does the area have a hydraulic 

mine site or sites?

No

Could OSV use affect a 

municipal water system 

comprised of a small reservoir 

that goes directly into a local 

community water supply?

No
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

287

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Minimize damage to 

vegetation and other forest 

resources.

Are TES plants known to occur 

in or around the trail or area 

under consideration that could 

potentially be affected by OSV 

use? 

No. However, there are several 

Epilobium howellii occurrences (a 

Watchlist plant) just off the trail.

N/A

Would the trail or area include 

designated botanical areas (SIA, 

RNA)?

No. N/A

(b)(2) Minimize harassment of wildlife and significant disruption of wildlife habitats.

Minimize harassment of 

wildlife.

Does the trail or area 

encompass California spotted 

owl, and/or goshawk nest sites?

No. N/A

Does the trail or area 

encompass sandhill crane nest 

sites?

No. N/A

Does the trail or area 

encompass known bald eagle 

nest sites?

No N/A

Does the trail or area contain 

key deer winter range?

No. N/A

Minimize significant 

disruption of wildlife 

habitats.

Does the trail or area contain 

TES aquatic habitat and/or 

designated critical habitat?

Yes, the Yuba Webber Trail crosses 

federally endangered Sierra Nevada 

yellow-legged frog (SNYLF) suitable 

habitat, but not occupied habitat. 

OSV use has the potential to disrupt 

and/or degrade aquatic habitat by 

damaging streambanks and causing 

sedimentation if use occurs when 

snow depth and density are 

inadequate as evidenced by exposed 

soil and open waterways. OSV use in 

areas with exposed soil can lead to 

reduced water quality from soil erosion 

and sedimentation.

Sierra Nevada yellow-legged frog suitable 

habitat will be protected by only allowing OSV 

use to occur when there is adequate snow to 

protect the frogs and their habitats.
Over-snow Vehicle Use Designation

Tahoe National Forest

288

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

Does the trail or area contain 

habitat for marten, wolverine, or 

other sensitive forest 

carnivores?

Yes, the Yuba Webber Trail passes 

through an area that has had several 

detections of a single male wolverine, 

including along the Yuba Webber trail.

The trail also crosses suitable marten 

habitat.

• Marten Den Sites (SNFPA ROD - S&G 89). 

Mitigate impacts where there is documented 

evidence of disturbance to the den site from 

existing recreation, off-highway vehicle route, 

trail, and road uses (including road 

maintenance). Evaluate proposals for new 

roads, trails, off highway vehicle routes, and 

recreation and other developments for their 

potential to disturb den sites. 

• Wolverine Detections (SNFPA ROD S&G 

32): When verified (wolverine) sightings 

occur, conduct an analysis to determine if 

activities within 5 miles of a detection have a 

potential to affect the species. If necessary,

apply a limited operating period from January 

1 to June 30 to avoid adverse impacts to 

potential breeding. Evaluate activities for a 2-

year period for detections not associated with 

a den site.

(b)(3) Minimize conflicts between motor vehicle use and existing or proposed recreational uses of National Forest System lands or neighboring 

Federal lands.

Minimize conflicts between 

motor vehicle use and 

existing or proposed 

recreational uses of NFS 

lands 

Would OSV use of this trail 

cause conflicts with nonmotorized visitors’ desire for 

solitude and quiet recreation (for 

example, PCT, Wilderness, Wild 

& Scenic Rivers, ski areas 

(cross-country, downhill))?

Yes, at Yuba Pass SnoPark and OSV 

trailhead.

Non-motorized users can use the area adjacent 

to and directly north of Yuba Pass that is not 

designated for OSV use (LRMP, pg. V-108).

This area is signed and patrolled during the 

winter, and provides a better option for nonmotorized winter users.

Conflicts between motor 

vehicle use and existing or 

proposed recreational uses 

of neighboring Federal 

lands

Does the trail abut a wilderness 

area or National Park managed 

by other agencies?

No

Does the trail abut a nonmotorized area on adjacent 

national forest or other Federal 

lands?

No

Does the trail abut a developed 

recreation site on neighboring 

Federal lands?

No
Draft Environment Impact Statement – Volume II

Appendices

Tahoe National Forest

289

CRITERIA POTENTIAL EFFECT 

INDICATORS

If yes, would OSV use of the trail or 

area cause adverse effects? If so, 

how?

If the trail or area is designated, what 

measures will be taken to manage OSV use 

to minimize these effects?

(b)(4) Minimize conflicts among different classes of motor vehicle uses of NFS lands or neighboring Federal lands.

Minimize conflicts among 

different classes of motor 

vehicle uses of NFS lands. 

Does this trail allow wheeled 

motor vehicle use over snow? If 

so, does this affect safety and 

winter management of this area?

No

Does this trail cross or contain 

plowed roads allowing vehicle 

use? Are road crossings allowed 

by OSVs?

No, the Yuba Webber Trail ends at the 

Yuba Pass SnoPark at State Highway 

49. (Note: The SNO-13E32 Haskell 

Peak Trail continues beyond this 

endpoint and OSV crossing of 

Highway 49 is allowed between the 

Yuba Webber Trail and Haskell Peak 

Trail).

There is adequate sight distance for OSV 

crossing of Highway 49.

Minimize conflicts among 

different classes of motor 

vehicle uses of other 

neighboring Federal lands. 

Does this trail receive use by 

both tracked over-snow vehicles 

under 50 inches wide and over 

50 inches wide? Is this 

potentially creating conflicts?

Yes. Use by tracked over-snow 

vehicles of all widths is common on 

this trail (grooming machine, snow 

tractors, snowmobile, tracked 

motorcycles, tracked ATVs, tracked 

4x4s)

Over-snow vehicles larger than 50 inches wide

would not be allowed off the designated OSV 

trail system. Experience has shown there is 

adequate width for combined use of the snowtrail system.

(b)(5) Consider compatibility of motor vehicle use with existing conditions in populated areas, taking into account sound, emissions, and other 

factors.

Consider compatibility of 

motor vehicle use with 

existing conditions in 

populated areas, taking into 

account sound, emissions, 

and other factors.

Is the trail adjacent to 

neighborhoods and 

communities? 

Is the trail adjacent to recreation 

residences used during the 

winter?

If so, is OSV use of this trail 

compatible with distinct 

characteristics of the 

community?

No.

No.

Draft Environment Impact Statement

Appendices

Tahoe National Forest

291

Appendix G. Assumptions Map

Existing OSV use assumptions map, Tahoe National Forest
Over-snow Vehicle Use Designation

Tahoe National Forest

292