**Descriptions of Soil Mapping Units, Slopes, and CUs for NFMRGMA**

*Soil Mapping Units Classification Units and Slopes*

1 CU 1 soils, 0-3 % slopes

1-10 CU 1 soils, 0-3 % slopes; 30 % CU 10 soils, 0-3 % slopes

1-15-43 CU 1 soil; 30 % CU 15 soils; 20 % CU 43 soils; all 0-3 % slopes

55/2 CU 55 soils, 3-7 % slopes

56/2 CU 56 soils, 3-7 % slopes

56/3 CU 56 soils, 7-12 % slopes

56-60/3-4 CU 56 soils, 7-12 % slopes; CU 60 soils, 7-20 % slopes

60/4 CU 60 soils, 12-20 % slopes

60/5 CU 60 soils, 20-35 % slopes

60-56/3 CU 60 soils, 7-12 % slopes; CU 56 soils, 7-12 % slopes

75/2 CU 75 soils, 3-7 % slopes

75/5-6 CU 75 soils, 20-60+ % slopes

76/2-3 CU 76 soils, 3-12 % slopes

76/5-6 CU 76 soils, 20-60+ % slopes

76-83/5-6 CU 76 soils, 20-60+ % slopes; 30 % CU 83 soils, 20-60+ %
slopes

76-84/5-6 CU 76 soils, 20-35 % slopes; 30 % CU 84 soils, 30-60+ % slopes

76-96/5-6 CU 76 soils, 20-35 % slopes; 30 % CU 96 soils, 35-60+ % slopes

S76/2-3 CU S76 soils, 3-12 % slopes

83/2-3 CU 83 soils, 3-12 % slopes

83/6 CU 83 soils, 35-60+ % slopes

83-84/4-5 CU 83 soils, 12-35 % slopes; 30 % CU 84 soils, 12-35 % slopes

83-82-96/5-6 CU 83 soil; 30 % CU 82 soils; 20 % CU 96 soils; all 20-60+
% slopes

83-84-96/5-6 CU 83 soil; 30 % CU 84 soils; 20 % CU 96 soils; all 20-60+
% slopes

84/4 CU 84 soils, 12-20 % slopes

84-82/3 CU 84 soils, 7-12 % slopes; 30 % CU 82 soils, 7-12 % slopes

84-83/2-3 CU 84 soils, 3-12 % slopes; 30 % CU 83 soils, 3-12 % slopes

84-83/4-5 CU 84 soils, 12-35 % slopes; 30 % CU 83 soils, 12-35 % slopes

84-83/5-6 CU 84 soils, 20-60+ % slopes; 30 % CU 83 soils, 20-65+ %
slopes

84-82-96/5-6 CU 84 soil; 30 % CU 82 soils; 20 % CU 96 soils; all 20-60+
% slopes

84-83-82/5-6 CU 84 soil; 30 % CU 83 soils; 20 % CU 82 soils; all 20-60+
% slopes

96/5 CU 96 soils, 20-35 % slopes

96-75/5-6 CU 96 soils, 20-60+ % slopes; 30 % CU 75 soils, 20-60+ %
slopes

96-76/5-6 CU 96 soils, 20-60+ % slopes; 30 % CU 76 soils, 20-60+ %
slopes

96-S76/4 CU 96 soils, 12-20 % slopes; 30 % CU S76 soils, 12-20 % slopes

Br/5 CU Br soils, 20-35 % slopes

Br-En/5-6 CU Br soils, 20-60+ % slopes; 30 % CU En soils, 20-60+ %
slopes

En-Br/5-6 CU En soils, 20-60+ % slopes; 30 % CU Br soils, 20-60+ %
slopes

Je/5 CU Je soils

Lo/5-6 CU Lo soils, 20-60+ % slopes

Lo/6 CU Lo soils, 35-60+ % slopes

Pe/3-4 CU Pe soils, 12-20 % slopes

Ru/4-5 CU Ru soils, 12-35 % slopes

Vi-Ga/2 CU Vi soils, 7-12 % slopes; 30 % CU Ga soils, 7-12 % slopes

CU Lo

Locey soils are moderately deep, well-drained soils over shale with
loess in the surface layers. They occur on gently to very steeply
sloping uplands near Baker County. Elevations range from 3,400 to 5,000
feet. Average annual air temperature centers around 47 degrees F. The
soil profile by depth consists of grayish brown loam, dark yellowish
brown silty clay over fractured shale. The native vegetation consists
mostly of bluebunch wheatgrass, shortawn needlegrass, Sandberg
bluegrass, big sagebrush, and squaw apple.

CU 56

Soils are shallow, well drained soils with clayey subsoils and cemented
pans. They occur on very extensive, gently sloping to moderately steep
old fans on high terrace remnants at elevations ranging from 3,000 to
6,000 feet. Average annual precipitation ranges from 8-11 inches and
mean annual air temperature centers around 47 degrees F. The soil
profile by depth consists of light brownish gray gravelly loam, brown
gravelly clay loam, brown gravelly heavy clay loam to silica cemented
gravelly pan over stratified loamy sand and gravel. The soil profile
becomes finer textured with depth. Native vegetation consists mostly of
big sagebrush, low sagebrush, rabbitbrush, budsage, Atriplex spp.,
needlegrass, and squirreltail grass.

Cu 60

Soils are moderately fine textured, well drained soils underlain by old
lacustrine sediments. They occur on gently sloping to hilly uplands at
elevations ranging from 2,500 to 4,000 feet. Average annual
precipitation ranges from 8-10 inches and mean annual air temperature
centers around 47 degrees F. The soil profile by depth consists of
yellowish brown loam, dark yellowish brown clay loam to pale brown
stratified clay loam and loam lacustrine sediments. Soils that have
developed on the more gentle slopes are usually somewhat deeper to
stratified sediments than those on the steeper slopes. Native vegetation
consists mostly of big sagebrush, rabbitbrush, bluebunch wheatgrass, and
Sandberg bluegrass.

CU75

Soils are loamy, shallow, very stony, well drained soils over basalt,
rhyolite, or welded tuff. They occur on gently undulating to rolling
lava plateaus and some very steep faulted and dissected terrain at
elevations ranging from 2,500 to 6,400 feet. Average annual
precipitation ranges from 8-11 inches and mean annual air temperature
centers around 45 degrees F. The soil profile by depth consists of light
gray silt loam, light brownish gray loam to light gray silt loam over
basalt bedrock. Some areas of this unit include soils with a
discontinuous cemented pan over the bedrock. Native vegetation consists
mostly of big sagebrush, low sagebrush, bluebunch wheatgrass, and
Sandberg bluegrass.

CU 76

Soils are shallow, clayey, very stony, well drained soils over basalt,
rhyolite, or welded tuff. They occur on gently undulating to rolling
lava plateaus and some very steep faulted and dissected terrain at
elevations ranging from 3,500 to 6,500 feet. Average annual
precipitation ranges from 8 to 11 inches, and mean annual air
temperature centers around 47 degrees F. The soil profile by depth
consists of light brownish gray silt loam, brown silty clay, to pale
brown stony and channery, heavy, silty clay loams over fractured bedrock
at 18+ inches. Some areas of this unit include soils with a
discontinuous cemented pan over the bedrock. Native vegetation consists
mostly of bluebunch wheatgrass, Sandberg bluegrass, big and low
sagebrush.

CU S76

Soils are shallow, extremely stony, well drained soils over basalt,
rhyolite, or welded tuff. They occur on gently undulating to steep
plateaus at elevations ranging from 4,000 to 6,000 feet. Average annual
precipitation ranges from 8 to 11 inches, and mean annual air
temperature centers around 45 degrees F. The soil profile by depth
consists of light grayish brown loam, light brownish gray clay loam,
dark yellowish brown clay over fractured bedrock at 11+ inches. Some
areas of this unit include soils with a discontinuous cemented pan over
the bedrock. Native vegetation consists mostly of low sagebrush,
Sandberg bluegrass, and bluebunch wheatgrass.

CU 82

Soils are moderately deep, loamy, well drained soils derived from thin
loess over basalt or rhyolite bedrock. These soils occur mainly on
northerly slopes on gently to very steeply sloping terrain at elevations
ranging from 4,500 to 7,500 feet. Average annual precipitation ranges
from 11 to 15 inches, and mean annual air temperature centers around 43
degrees F. The soil profile by depth consists of dark grayish brown silt
loam, dark brown silt loam, brown silt loam over basalt bedrock at 30+
inches. Some areas of this unit include are 40+ inches. Native
vegetation consists mostly of Idaho fescue, bluebunch wheatgrass, big
sagebrush, bitterbrush, and snowberry. There are aspen pockets in this
soil at higher elevations.

CU 83

Soils are shallow, very stony, rocky, well drained soils over basalt,
rhyolite, or welded tuff. They occur on gently undulating to rolling
lava plateaus with some very steep faulted and dissected terrain mostly
at elevations above 5,000 feet. Average annual precipitation ranges from
11 to 15 inches, and mean annual air temperature centers around 43
degrees F. The soil profile by depth consists of dark grayish brown silt
loam, grayish brown silty clay loam, grayish brown silty clay over
basalt bedrock at 18+ inches. Native vegetation consists mostly of Idaho
fescue, bluebunch wheatgrass, Sandberg bluegrass, low sagebrush, big
sagebrush and bitterbrush.

Unit 84 soils are very shallow, very stony, rocky, well drained soils
over basalt, rhyolite, or welded tuff. They occur on gently undulating
to rolling plateaus and very steep canyon lands and escarpments at
elevations mostly above 5,000 feet. Average annual precipitation ranges
from 11 to 15 inches, and mean annual air temperature centers around 43
degrees F. The soil profile by depth consists of dark grayish brown silt
loam, grayish brown silty clay loam, grayish brown silty clay over
basalt bedrock at 18+ inches. Native vegetation consists mostly of low
sagebrush, Idaho fescue, bluebunch wheatgrass, Sandberg bluegrass, and
juniper.

CU 96 (Steep rock land)

This is a miscellaneous land unit consisting of rough, steeply sloping
areas that are predominantly shallow, very stony soils interspersed with
rock outcrop. Steep rock land occurs mainly as canyons and escarpments
along margins and dissected portions of lava plateaus.