19 Soils in Seeps and on Stream Terraces

Soil Survey of Crater Lake National Park, Oregon 

General Soil Map Units

Soils in Seeps and on Stream Terraces

Number of map units: 1

Percentage of park: 1 percent

12. Stirfry-Mariel-Anniecreek

Percentage of park: 1 percent

Location in park: Stream terraces, seeps flowing from canyonsides, and bogs scattered throughout park

Depth class: Very deep

Slope range: 0 to 15 percent

Elevation: 4,100 to 6,500 feet

Average annual precipitation: 25 to 70 inches

Average annual air temperature: 38 to 42 degrees F

Frost-free period: 0 to 50 days

Minor components: 5 percent Llaorock soils, 5 percent Grousehill soils, and 5 percent Riverwash

Present vegetation: Sphagnum moss, sedges, rushes, grasses, shrubs, and lodgepole pine

Mariel soils

Drainage class: Very poorly drained

Permeability: Moderate

Position on landscape: Bogs in mountain basins

Parent material: Organic material

Surface texture: Mucky peak

Subsoil texture: Muck

Stirfry soils

Drainage class: Very poorly drained

Permeability: Moderately rapid

Position on landscape: Drainageways

Parent material: Mossy organic material over ash and pumice

Surface texture: Peat

Subsoil texture: Muck

Substratum texture: Gravelly ashy very coarse sand

Anniecreek soils

Drainage class: Somewhat poorly drained

Permeability: Rapid

Position on landscape: Stream terraces

Parent material: Ash and pumice

Surface texture: Ashy fine sandy loam

Subsoil texture: Ashy sand

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