Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-1 

CHAPTER 3 FIGURES 

Figure 3-1. BLM Casper Field Office, Medicine Bow National Forest and Thunder Basin 

National Grassland 
Figures Draft EIS 

FIG-2 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-2. BLM Kemmerer Field Office and Bridger-Teton National Forest 

Figure 3-3. BLM Newcastle Field Office & Thunder Basin National Grassland 
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-3 

Figure 3-4. BLM Pinedale Field Office & Bridger-Teton National Forest

Figure 3-5. BLM Rawlins Field Office & Medicine Bow National Forest 
Figures Draft EIS 

FIG-4 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-6. BLM Rock Springs Field Office & Bridger-Teton National Forest 

Figure 3-7. Capacity to Disperse Pollutants Rock Springs, Wyoming 

0

10

20

30

40

50

60

70

Very Strong Strong Moderate Fair Weak Very Weak

Stability class occurrence (%)
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-5 

Figure 3-8. Criteria Pollutant Concentrations in the BLM Casper Field Office Area, 

Medicine Bow-Routt National Forest and Thunder Basin National Grassland 

0

20

40

60

80

100

120

CO 8-hour CO 1-hour NO2 1 hour O3 8-hour PM2.5

annual

PM2.5 24-

hour

PM10 24-

hour

SO2 1 hour

criteria pollutant concentration (percent of NAAQS)

NO2: Natrona County

O3: Natrona County

PM2.5: Natrona County

PM10: Converse County

SO2: Natrona County

NAAQS
Figures Draft EIS 

FIG-6 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-9. Criteria Pollutant Concentrations in the BLM Kemmerer Field Office Area and 

Bridger-Teton National Forest 

0

20

40

60

80

100

120

CO 8-hour CO 1-hour NO2 1 hour O3 8-hour PM2.5

annual

PM2.5 24-

hour

PM10 24-

hour

SO2 1 hour

criteria pollutant concentration (percent of NAAQS)

NO2: Uinta County

O3: Uinta County

PM2.5: 

PM10: Lincoln County

SO2: Uinta County

NAAQS
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-7 

Figure 3-10. Criteria Pollutant Concentrations in the BLM Newcastle Field Office Area 

and Thunder Basin National Grassland 

0

20

40

60

80

100

120

CO 8-hour CO 1-hour NO2 1 hour O3 8-hour PM2.5

annual

PM2.5 24-

hour

PM10 24-

hour

SO2 1 hour

criteria pollutant concentration (percent of NAAQS)

NO2: 

O3: Crook County

PM2.5: 

PM10: 

SO2: Weston County

NAAQS
Figures Draft EIS 

FIG-8 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-11. Criteria Pollutant Concentrations in the BLM Pinedale Field Office Area and 

Bridger-Teton National Forest 

0

20

40

60

80

100

120

CO 8-hour CO 1-hour NO2 1 hour O3 8-hour PM2.5

annual

PM2.5 24-

hour

PM10 24-

hour

SO2 1 hour

criteria pollutant concentration (percent of NAAQS)

CO: Teton County

NO2: Sublette County

O3: Sublette County

PM2.5: Sublette County

PM10: Sublette County...

NAAQS
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-9 

Figure 3-12. Ozone Concentrations in the Pinedale Field Office Area and Bridger-Teton 

National Forest 

0.000

0.010

0.020

0.030

0.040

0.050

0.060

0.070

0.080

0.090

2007 2008 2009 2010 2011 2012

O3 concentration (ppm)

Boulder: AQS site ID 56-035-0099

Daniel: AQS site ID 56-035-0100

Juel Springs: AQS site ID 56-035-1002

Boulder

Daniel

Juel Springs

NAAQS NAAQS
Figures Draft EIS 

FIG-10 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-13. Criteria Pollutant Concentrations in the BLM Rawlins Field Office Area and 

Medicine Bow National Forest 

0

20

40

60

80

100

120

CO 8-hour CO 1-hour NO2 1 hour O3 8-hour PM2.5

annual

PM2.5 24-

hour

PM10 24-

hour

SO2 1 hour

criteria pollutant concentration (percent of NAAQS)

CO: Laramie County

NO2: Carbon County

O3: Carbon County

PM2.5: Albany County

PM10: Albany County

SO2: Carbon County

NAAQS
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-11

Figure 3-14. Criteria Pollutant Concentrations in the BLM Rock Springs Field Office Area 

and Bridger-Teton National Forest 

0

20

40

60

80

100

120

CO 8-hour CO 1-hour NO2 1 hour O3 8-hour PM2.5

annual

PM2.5 24-

hour

PM10 24-

hour

SO2 1 hour

criteria pollutant concentration (percent of NAAQS)

CO: Sweetwater County

NO2: Sweetwater County

O3: Sweetwater County

PM2.5: Sweetwater County

PM10: Sweetwater County

SO2: Sweetwater County

NAAQS
Figures Draft EIS 

FIG-12 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-15. Daily Visibility near Sage-grouse Planning Area Bridger Wilderness

0

50

100

150

200

250

3214432403326623292133180334393369833957342163447534734349933525235511357703602936288365473679937021372433746537687379093813138353385753879739019392413946339685399074012940351

Standard Visual Range (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Bridger station: BRID1

Visibility measured every 3 days from 1988 through present
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-13

Figure 3-16. Daily Visibility near Sage-grouse Planning Area Yellowstone National Park 

0

50

100

150

200

250

1/2/19881/2/19891/2/19901/2/19911/2/19921/2/19931/2/19941/2/19951/2/19961/2/19971/2/19981/2/19991/2/20001/2/20011/2/20021/2/20031/2/20041/2/20051/2/20061/2/20071/2/20081/2/20091/2/2010

Standard Visual Range (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Yellowstone National Park station: YELL1, YELL2

Visibility measured every 3 days from 1988 through present
Figures Draft EIS 

FIG-14 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-17. Daily Visibility near Sage-grouse Planning Area North Absaroka Wilderness

0

50

100

150

200

250

300

1/2/1988

10/5/1988

7/8/1989

4/11/19901/12/1991

10/16/1991

7/18/19924/21/19931/22/1994

10/26/1994

7/29/1995

5/1/19962/1/1997

11/5/1997

8/8/1998

5/12/1999

02/12/200011/02/200006/27/200102/19/200210/14/200206/08/200301/31/200409/24/200405/19/200501/11/200609/05/200604/30/200712/23/200708/16/200804/10/200912/03/200907/28/2010

Standard Visual Range (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE North Absaroka station: NOAB1

Visibility measured every 3 days from 2000 through present
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-15

Figure 3-18. Daily Visibility near Sage-grouse Planning Area Cloud Peak Wilderness 

0

50

100

150

200

250

1/2/1988

10/5/1988

7/8/1989

4/11/19901/12/1991

10/16/1991

7/18/19924/21/19931/22/1994

10/26/1994

7/29/1995

5/1/19962/1/1997

11/5/1997

8/8/1998

5/12/19992/12/200011/2/20006/27/2001

02/19/200210/14/200206/08/200301/31/200409/24/200405/19/200501/11/200609/05/200604/30/200712/23/200708/16/200804/10/200912/03/200907/28/2010

Standard Visual Range (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Cloud Peak station:CLPE

Visibility measured every 3 days from 2002 through present
Figures Draft EIS 

FIG-16 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-19. Daily Visibility near Sage-grouse Planning Area Brooklyn Lake 

0

50

100

150

200

250

1/2/1988

10/5/1988

7/8/1989

4/11/19901/12/1991

10/16/1991

7/18/1992

04/21/199301/22/199410/26/199407/29/199505/01/199602/01/199711/05/199708/08/199805/12/199902/12/200011/05/200006/30/200102/22/200210/17/200206/11/200302/03/200409/27/2004

5/19/20051/11/2006

9/5/2006

4/30/2007

12/23/2007

8/16/20084/10/200912/3/20097/28/2010

Standard Visual Range (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Brooklyn Lake station: BRLA1

Visibility measured every 3 days from 1993 through 2003
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-17

Figure 3-20. Daily Visibility near Sage-grouse Planning Area Rocky Mountain National 

Park 

0

50

100

150

200

250

1/2/1988

10/5/1988

7/8/1989

04/11/199001/12/199110/16/199107/18/199204/21/199301/22/199410/26/199407/29/199505/01/199602/01/199711/05/199708/08/199805/12/199902/12/200011/05/200006/30/200102/22/200210/17/200206/11/200302/03/200409/27/200405/22/200501/14/200609/08/200605/03/200712/26/200708/19/2008

4/13/200912/6/20097/31/2010

Standard Visual Range (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Rocky Mountain National Park station: ROMO1

Visibility measured every 3 days from 1990 through present
Figures Draft EIS 

FIG-18 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-21. Daily Visibility near Sage-grouse Planning Area Thunder Basin 

0

20

40

60

80

100

120

140

160

180

200

1/2/1988

10/5/1988

7/8/1989

4/11/19901/12/1991

10/16/1991

7/18/19924/21/19931/22/1994

10/26/1994

7/29/1995

5/1/19962/1/1997

11/5/1997

8/8/1998

5/12/19992/12/200011/2/20006/27/2001

02/19/200210/14/200206/08/200301/31/200409/24/200405/19/200501/11/200609/05/200604/30/200712/23/200708/16/200804/10/200912/03/200907/28/2010

Standard Visual Range (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Thunder Basin station: THBA1

Visibility measured every 3 days from 2002 through present
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-19

Figure 3-22. Daily Visibility near Sage-grouse Planning Area Boulder Lake 

0

50

100

150

200

250

01/01/200901/25/200902/18/200903/14/200904/07/200905/01/200905/25/200906/18/200907/12/200908/05/200908/29/200909/22/200910/16/200911/09/200912/03/200912/27/200901/20/201002/13/201003/09/201004/02/201004/26/201005/20/201006/13/201007/07/201007/31/201008/24/201009/17/201010/11/201011/04/201011/28/201012/22/2010

Standard Visual Range (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Boulder Lake IMPROVE station: BOLA1

Visibility measured every 3 days from 2010 through present
Figures Draft EIS 

FIG-20 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-23. Annual Visibility (Standard Visual Range) near Sage-grouse Planning Area

Bridger Wilderness 

0

20

40

60

80

100

120

140

160

180

200

1989199019911992199319941995199619971998199920002001200220032004200520062007200820092010

SVR (miles)

Data takem from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Bridger station BRID1

20% cleanest

average

20% haziest
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-21

Figure 3-24. Annual Visibility (Standard Visual Range) near Sage-grouse Planning Area

Yellowstone National Park 

0

50

100

150

200

250

SVR (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Yellowstone National Park station YELL1, YELL2

20%

cleanest

average

20%

haziest
Figures Draft EIS 

FIG-22 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-25. Annual Visibility (Standard Visual Range) near Sage-grouse Planning Area

North Absaroka 

0

50

100

150

200

250

SVR (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE North Absaroka station: NOAB1

20%

cleanest

average

20%

haziest
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-23

Figure 3-26. Annual Visibility (Standard Visual Range) near Sage-grouse Planning Area

Cloud Peak 

0

50

100

150

200

250 SVR (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Cloud Peak station: CLPE1

20%

cleanest

average

20%

haziest
Figures Draft EIS 

FIG-24 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-27. Annual Visibility (Standard Visual Range) near Sage-grouse Planning Area

Rocky Mountain National Park 

0

50

100

150

200

250 SVR (miles)

Data taken from Inter-Agency Monitoring of Protected Visual Environments

IMPROVE Rocky Mountain National Park station: ROMO1

20%

cleanest

average

20%

haziest
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-25

Figure 3-28. Mean Annual Precipitation pH in the Sage-grouse Planning Area Pinedale, 

Wyoming 

4.4

4.6

4.8

5

5.2

5.4

5.6

5.8 precipitation pH

Data taken from National Atmospheric Deposition Program

NADP Pinedale station WY06

Normal range of precipitation pH:

5.0 - 5.6 (Seinfeld, 1986)
Figures Draft EIS 

FIG-26 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-29. Mean Annual Precipitation pH in the Sage-grouse Planning Area

4.4

4.6

4.8

5

5.2

5.4

5.6

5.8

Precipitation pH

Data taken from National Atmospheric Deposition Program

NADP Pinedale station WY06

NADP Sinks Canyon station WY02

NADP South Pass station WY97

Pinedale

Sinks Canyon

South Pass
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-27

Figure 3-30. Mean Annual Concentrations of Nitrogen Compounds near Sage-grouse 

Planning Area Pinedale, Wyoming 

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012

Concentration (ug/m3)

nitric acid

ammonium

nitrate

total nitrate

Data taken from Clean Air Status & Trends Network

CASTNet Pinedale station PND165

Typical concentrations for remote areas:

HNO3: .05 - 0.8 ug/m3

NH4: .2 ug/m3

NO3: .5 ug/m3
Figures Draft EIS 

FIG-28 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-31. Mean Annual Concentrations of Nitrogen Compounds near Sage-grouse 

Planning Area Centennial, Wyoming 

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012

Concentration (ug/m3)

nitric acid

ammonium

nitrate

total nitrate

Data taken from Clean Air Status & Trends Network

CASTNet Centennial station CNT169

Typical concentrations for remote areas:

HNO3: .05 - 0.8 ug/m3

NH4: .2 ug/m3

NO3: .5 ug/m3
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-29

Figure 3-32. Mean Annual Concentrations of Nitrogen Compounds near Sage-grouse 

Planning Area Yellowstone National Park 

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012

Concentration (ug/m3)

nitric acid

ammonium

nitrate

total nitrate

Data taken from Clean Air Status & Trends Network

CASTNet Yellowstone station Yel408

Typical concentrations for remote areas:

HNO3: .05 - 0.8 ug/m3

NH4: .2 ug/m3

NO3: .5 ug/m3
Figures Draft EIS 

FIG-30 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-33. Mean Annual Concentrations of Nitrogen Compounds in the Sage-grouse 

Planning Area Pinedale 

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

2002 2003 2004 2005 2006 2007 2008 2009 2010

concentration (ug/m3)

Data taken from Wyoming Air Resources Monitoring network

WARMS Pinedale station

Typical concentrations for remote areas:

HNO3: .05 - 0.8 ug/m3

NH4: .2 ug/m3

NO3: .5 ug/m3

pNO3

NH4

HNO3

tNO3
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-31

Figure 3-34. Mean Annual Concentrations of Sulfur Compounds near Sage-grouse 

Planning Area Pinedale, Wyoming 

0

0.5

1

1.5

2

2.5

198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012

Concentration (ug/m3)

sulfur dioxide

sulfate

Data taken from Clean Air Status and Trend Network

CASTNet Pinedale station: PND165

Typical concentrations for remote areas

SO2: 2.6 - 26 ug/m3

SO4: 2.5 ug/m3
Figures Draft EIS 

FIG-32 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-35. Mean Annual Concentrations of Sulfur Compounds near Sage-grouse 

Planning Area Centennial, Wyoming 

0

0.5

1

1.5

2

2.5

198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012

Concentration (ug/m3)

Data taken from Clean Air Status & Trend Network

CASTNet Centennial station: CNT169

Typical concentrations for remote areas

SO2: 2.6 - 26 ug/m3

SO4: 2.5 ug/m3

sulfur dioxide

sulfate
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-33

Figure 3-36. Mean Annual Concentrations of Sulfur Compounds near Sage-grouse 

Planning Area Yellowstone National Park 

0

0.5

1

1.5

2

2.5

198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012

Concentration (ug/m3)

Data taken from Clean Air Status & Trend Network

CASTNet Yellowstone station: YEL408

Typical concentrations for remote areas

SO2: 2.6 - 26 ug/m3

SO4: 2.5 ug/m3

sulfur dioxide

sulfate
Figures Draft EIS 

FIG-34 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-37. Mean Annual Concentrations of Sulphur Compounds in the Sage-grouse 

Planning Area Pinedale 

0

0.5

1

1.5

2

2.5

2002 2003 2004 2005 2006 2007 2008 2009 2010

concentration (ug/m3)

Data taken from Wyoming Air Resources Monitoring System

WARMS Pinedale station

Typical concentrations for remote areas

SO2: 2.6 - 26 ug/m3

SO4: 2.5 ug/m3

pSO4

tSO2
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-35

Figure 3-38. Total Nitrogen Deposition in Pinedale 
Figures Draft EIS 

FIG-36 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-39. Total Nitrogen Deposition in Yellowstone National Park 
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-37

Figure 3-40. Total Nitrogen Deposition in Centennial 
Figures Draft EIS 

FIG-38 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-41. Total Sulphur Deposition in Pinedale 
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-39

Figure 3-42. Total Sulphur Deposition in Yellowstone National Park 
Figures Draft EIS 

FIG-40 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-43. Total Sulphur Deposition in Centennial 
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-41

Figure 3-44. Climate Change in Northern Latitudes 
Figures Draft EIS 

FIG-42 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-45. Average Temperature and Precipitation Trends 
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-43

Figure 3-46. Socioeconomic Study Area, Planning Area, and Surface Land Tenure 
Figures Draft EIS 

FIG-44 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-47. Distribution of Soil Stability Ratings Forestwide for the Bridger-Teton 

National Forest 
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-45

Figure 3-48. Male Sage-grouse Lek Attendance Averages, 1980 – 2008, for the Newcastle 

Field Office 
Figures Draft EIS 

FIG-46 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-49. Greater Sage-Grouse Habitat for the Bridger-Teton National Forest
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-47

Figure 3-50. General Location of Designated Greater Sage-Grouse Core Habitats in the 

Thunder Basin National Grassland 
Figures Draft EIS 

FIG-48 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-51. Average Number of Displaying Male Greater Sage-Grouse per Lek (1996-

2011) in the Thunder Basin National Grassland 

Figure 3-52. Minimum Estimated Greater Sage-Grouse Population (1998-2011) in the 

Thunder Basin National Grassland 

1

6

11

16

21

26

31

36

41

1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

Sage-Grouse Males/Lek

TBNG

NE WY

STATE

0

500

1000

1500

2000

2500

3000

3500

1996 1998 2000 2002 2004 2006 2008 2010 2012

Minimum Sage-grouse Population Estimate

ESTIMATED TBNG MINIMUM POPULATION

10 YEAR MEAN
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-49

Figure 3-53. Prairie Dog Acres in the Thunder Basin National Grassland 

Figure 3-54. Number of Displaying Male Sharp-tailed Grouse Observed Annually (2003-

2011) in the Thunder Basin National Grassland 

0

5,000

10,000

15,000

20,000

25,000

Acres

Year
Figures Draft EIS 

FIG-50 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-55. Percent of Active Raptor Nests in the Thunder Basin National Grassland 

18

40

61

49 50

48

9

18

16

0

10

20

30

40

50

60

70

2003 2004 2005 2006 2007 2008 2009 2010 2011

% Active
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-51

Figure 3-56. Elk Population for the Thunder Basin National Grassland 

0

100

200

300

400

500

600

700

800

900

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

Rochelle Hills Elk Population 

Estimated Population

Population Objective
Figures Draft EIS 

FIG-52 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-57. Pronghorn Antelope Herd Units for the Thunder Basin National Grassland 

Figure 3-58. Highlight Herd Population for the Thunder Basin National Grassland

0

2000

4000

6000

8000

10000

12000

14000

16000

18000

20000

2000 2002 2004 2006 2008 2010

A

n

i

m

a

l

s

Highlight Antelope Herd

Estimated

Population
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-53

Figure 3-59. North Black Hills Population for the Thunder Basin National Grassland 

Figure 3-60. Gillette Herd Population for the Thunder Basin National Grassland

0

5,000

10,000

15,000

20,000

25,000

2000 2002 2004 2006 2008 2010

A

N

I

M

A

L

S

North Black Hills Antelope

Estimated Population

Population Objective

0

3,000

6,000

9,000

12,000

15,000

18,000

21,000

24,000

27,000

2000 2002 2004 2006 2008 2010

A

N

I

M

A

L

S

Gillette Antelope

Estimated Population

Population Objective
Figures Draft EIS 

FIG-54 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-61. Cheyenne River Herd Population for the Thunder Basin National Grassland 

Figure 3-62. North Converse Population for the Thunder Basin National Grassland 

0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000

45,000

50,000

55,000

60,000

65,000

2000 2002 2004 2006 2008 2010

A

N

I

M

A

L

S

Cheyenne River Antelope

Estimated

Population

Population

Objective

0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000

45,000

50,000

2000 2002 2004 2006 2008 2010

A

N

I

M

A

L

S

North Converse Antelope

Estimated Population

Population Objective
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-55

Figure 3-63. Mule Deer Herds for the Thunder Basin National Grassland 
Figures Draft EIS 

FIG-56 Wyoming Sage-grouse Land Use Plan Amendment 

Figure 3-64. Powder River Mule Deer Herd Population for the Thunder Basin National 

Grassland 

Figure 3-65. Cheyenne River Mule Deer Herd Population for the Thunder Basin National 

Grassland 

0

10000

20000

30000

40000

50000

60000

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

A

n

i

m

a

l

s

Powder River Mule Deer Herd

Estimated Population

Population Objective

0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000

45,000

2000 2002 2004 2006 2008 2010

A

N

I

M

A

L

S

Cheyenne River Mule Deer Herd

Estimated Population

Population Objective
Draft EIS Figures 

Wyoming Sage-grouse Land Use Plan Amendment FIG-57

Figure 3-66. Black Hills Mule Deer Herd Population for the Thunder Basin National 

Grassland 

Figure 3-67. North Converse Mule Deer Herd Population for the Thunder Basin National 

Grassland 

0

2,000

4,000

6,000

8,000

10,000

12,000

14,000

2000 2002 2004 2006 2008 2010

A

N

I

M

A

L

S

North Converse Mule Deer Herd

Estimated

Population

Population

Objective