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
