Crater Lake National Park

Location:Oregon, United States
IUCN Category:II
Area:180,091 acres (72,880 hectares)
Species:All  Endangered  Invasive
Website:View website
Climate:View Climate Data
Land Use:View Land Use Data
Köppen climate classification:Csb (Climate: warm temperate; Precipitation: summer dry; Temperature: warm summer)


Central and Southern Cascades forests
Eastern Cascades forests


Protected Area Boundary
Share70 %30 %
Soil TypeHumic CambisolsOrthic Podzols
Topsoil TextureMediumCoarse
Reference Depth100 cm100 cm
DrainageModerately wellSomewhat excessive
Available Water Capacity100 m100 m
Phase 1Stony 
Topsoil Properties
Gravel8 %4 %
Sand41 %85 %
Silt36 %11 %
Clay23 %4 %
USDA TextureLoamLoamy sand
Reference Bulk Density1.39 g/cm³1.73 g/cm³
Bulk Density1.1 g/cm³1.36 g/cm³
Organic Carbon2.72 %2.09 %
Clay Cation Exchange Capacity54 cmol kg⁻¹98 cmol kg⁻¹
Soil Cation Exchange Capacity21 cmol kg⁻¹10 cmol kg⁻¹
Base Saturation24 %16 %
Total Exchangeable Bases5 cmol kg⁻¹2.5 cmol kg⁻¹
Calcium Carbonate0 %0 %
Calcium Sulphate0 %0 %
Exchangeable Sodium1 %1 %
Electrical Conductivity0.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel8 %5 %
Sand44 %84 %
Silt32 %11 %
Clay24 %5 %
USDA TextureLoamLoamy sand
Reference Bulk Density1.39 g/cm³1.7 g/cm³
Bulk Density1.16 g/cm³1.51 g/cm³
Organic Carbon1.03 %0.59 %
Clay Cation Exchange Capacity38 cmol kg⁻¹63 cmol kg⁻¹
Soil Cation Exchange Capacity15 cmol kg⁻¹4 cmol kg⁻¹
Base Saturation30 %23 %
Total Exchangeable Bases2.5 cmol kg⁻¹1.6 cmol kg⁻¹
Calcium Carbonate0 %0 %
Calcium Sulphate0 %0 %
Exchangeable Sodium2 %2 %
Electrical Conductivity0.1 dS m-10.1 dS m-1
Soil data provided by FAO/IIASA/ISRIC/ISSCAS/JRC, 2012. Harmonized World Soil Database (version 1.2). FAO, Rome, Italy and IIASA, Laxenburg, Austria.
Köppen climate classification provided by Kottek, M., J. Grieser, C. Beck, B. Rudolf, and F. Rubel, 2006: World Map of Köppen-Geiger Climate Classification updated. Meteorol. Z., 15, 259-263