Roche soil series
A profile of a Roche soil. These soils formed in coarse-loamy glacial drift. They are moderately deep to a water- and root-restricting layer, are moderately well drained, and support forests that consist dominantly of Douglas-fir and Pacific madrone. (Soil Survey of San Juan County, Washington; by Michael Regan, Natural Resources Conservation Service)
The Roche series consists of moderately deep, moderately well drained soils formed in glacial drift over dense glaciomarine deposits on hills and outwash plains. Slopes are 0 to 30 percent. The average annual precipitation is about 545 millimeters. The average annual air temperature is about 9 degrees C.
TAXONOMIC CLASS: Coarse-loamy, isotic, mesic Aquic Dystroxerepts
Average annual soil temperature - 10 to 11 degrees C.
Moisture control section - dry 75 to 90 days following the summer solstice
Depth to densic contact - 50 to 100 cm
Depth to redoximorphic features - 46 to 91 cm
Reaction - moderately acid to neutral
Particle size control section:
clay content - 2 to 18 percent
rock fragments - 0 to 35 percent gravel
USE AND VEGETATION: These soils are used for livestock grazing, forage crop production, forestry and homesites. Potential natural vegetation consists of Douglas-fir, Pacific madrone, lodgepole pine, oceanspray, baldhip rose, salal, Cascade Oregongrape, rattlesnake plantain, and bracken fern.
DISTRIBUTION AND EXTENT: Northwestern Washington; MLRA 2. Series is of small extent.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/washington/WA0...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/R/ROCHE.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#roche
Roche soil series
A profile of a Roche soil. These soils formed in coarse-loamy glacial drift. They are moderately deep to a water- and root-restricting layer, are moderately well drained, and support forests that consist dominantly of Douglas-fir and Pacific madrone. (Soil Survey of San Juan County, Washington; by Michael Regan, Natural Resources Conservation Service)
The Roche series consists of moderately deep, moderately well drained soils formed in glacial drift over dense glaciomarine deposits on hills and outwash plains. Slopes are 0 to 30 percent. The average annual precipitation is about 545 millimeters. The average annual air temperature is about 9 degrees C.
TAXONOMIC CLASS: Coarse-loamy, isotic, mesic Aquic Dystroxerepts
Average annual soil temperature - 10 to 11 degrees C.
Moisture control section - dry 75 to 90 days following the summer solstice
Depth to densic contact - 50 to 100 cm
Depth to redoximorphic features - 46 to 91 cm
Reaction - moderately acid to neutral
Particle size control section:
clay content - 2 to 18 percent
rock fragments - 0 to 35 percent gravel
USE AND VEGETATION: These soils are used for livestock grazing, forage crop production, forestry and homesites. Potential natural vegetation consists of Douglas-fir, Pacific madrone, lodgepole pine, oceanspray, baldhip rose, salal, Cascade Oregongrape, rattlesnake plantain, and bracken fern.
DISTRIBUTION AND EXTENT: Northwestern Washington; MLRA 2. Series is of small extent.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/washington/WA0...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/R/ROCHE.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#roche