10 4. Maklak-Collier (ponderosa pine/fir with lodgepole pine)

Soil Survey of Crater Lake National Park, Oregon 

General Soil Map Units

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

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