Detailed Soil Map Units
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2—Badland, 50 to 100 percent slopes
Map Unit Setting
General location: Ravines in valleys
Major land resource area (MLRA): 3
Elevation: 4,000 to 6,000 feet
Average annual precipitation: 50 to 70 inches
Average annual air temperature: 38 to 42 degrees F
Frost-free period: 0 to 50 days
Map Unit Composition
Badland:
80 percent
Minor components: 20 percent
Characteristics of the Badland
Setting
Landform: Ashflow
Geomorphic position: Nonvegetated ashflow deposits in valleys
Parent material: Ash, cinders, pumice, and andesite
Properties and qualities
Slope: 50 to 100 percent
Percentage of surface covered with stones and boulders: None
Restrictive features: None within a depth of 60 inches
Drainage class: Excessively drained
Characteristics of the Minor Components
Castlecrest soils
Percentage of map unit: 10 percent
Landform: Ashflow
Geomorphic position: Forested side slopes of ravines
Stirfry soils
Percentage of map unit: 5 percent
Landform: Drainageway
Geomorphic position: Base of side slopes of ravines, and narrow stream terraces
Rock outcrop
Percentage of map unit: 5 percent
Landform: Ashflow
Geomorphic position: Welded tuff outcroppings on side slopes of ravines
Major Features and Properties Affecting Management
Badland
• Steep and unstable slopes
• Dustiness
• Wind erosion
• Water erosion
• Low water-holding capacity
