General Soil Map Units
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Soils That Are in Valleys and Formed in Ash and Pumice Flow Deposits of Ash, Pumice, and Cinders
Number of map units: 4
Percentage of park: 42 percent
4. Maklak-Collier (ponderosa pine/fir with lodgepole pine)
Percentage of park: 5 percent
Location in park: Lowlands and valleys, mainly near the eastern and southeastern boundaries
Depth class: Very deep
Position on landscape: Pumice flows and ashflows
Parent material: Pumice, ash, and cinders
Elevation: 4,000 to 6,000 feet
Average annual precipitation: 20 to 60 inches
Average annual air temperature: 38 to 44 degrees F
Frost-free period: 0 to 50 days
Minor components: 5 percent Lapine soils
Present vegetation: Ponderosa pine, white fir, and lodgepole pine
Maklak soils
Drainage class: Excessively drained
Permeability: Very rapid
Surface texture: Paragravelly ashy loamy sand
Subsoil texture: Very paragravelly ashy loamy sand
Substratum texture: Extremely paragravelly ashy loamy sand
Slope range: 0 to 10 percent
Collier soils
Drainage class: Somewhat excessively drained
Permeability: Rapid
Surface texture: Ashy sandy loam
Subsoil texture: Paragravelly ashy loamy sand
Substratum texture: Paragravelly ashy sand
Slope range: 0 to 80 percent
