35 22—Grousehill gravelly medial loam, 0 to 25 percent slopes

22—Grousehill gravelly medial loam, 0 to 25 percent slopes

 Map Unit Setting

General location: Glaciated side slopes and summits of mountains and ridges

Major land resource area (MLRA): 3

Elevation: 4,500 to 7,000 feet

Average annual precipitation: 50 to 70 inches

Average annual air temperature: 38 to 42 degrees F

Frost-free period: 10 to 35 days

 Map Unit Composition

 Grousehill and similar soils: 85 percent

Minor components: 15 percent

 Characteristics of the Grousehill and Similar Soils


 Landform: Ground moraine

Geomorphic position: Glacial moraine on summits of ridges

Parent material: Ash over glacial till

 Properties and qualities

 Slope: 0 to 25 percent

Percentage of surface covered with stones and boulders: 3 percent

Restrictive feature: Duripan at a depth of 20 to 40 inches

Drainage class: Moderately well drained

Permeability: Moderate

Flooding: Not present

Water table: Present (see table 20)

Ponding: Not present

Available water capacity: About 12.8 inches

 Interpretive groups

 Ecological site: Forestland—(003XY701OR) Tsuga mertensiana/Vaccinium scoparium/Chimaphila umbellata

 Typical profile

 Oi—0 to 3 inches; slightly decomposed plant material

A—3 to 10 inches; gravelly medial loam

Bw1—10 to 31 inches; very cobbly medial loam

Bw2—31 to 39 inches; very cobbly medial loam

Bqm—39 to 56 inches; moderately cemented duripan

 Characteristics of the Minor Components

 Castlecrest soils

 Percentage of map unit: 10 percent

Landform: Stratovolcano

Geomorphic position: Ashfall deposits on summits and side slopes of mountains

 Llaorock soils

 Percentage of map unit: 3 percent

Landform: Lava flow

Geomorphic position: Ash mixed with residuum and colluvium derived from andesite on summits and side slopes of mountains

Racing soils

 Percentage of map unit: 2 percent

Landform: Drainageway

Geomorphic position: Depressions on glaciated ridges

 Major Soil Features and Properties Affecting Management

 Grousehill soil

 • Rock fragments on surface

• Rock fragments in soil profile

• Depth to hardpan

• Wetness

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