Spieden soil series

A representative soil profile of Spieden soil in an area of Sholander-Spieden complex, 0 to 5 percent slopes. (Soil Survey of San Juan County, Washington; by Michael Regan, Natural Resources Conservation Service).

 

The Spieden series consists of very deep, poorly drained soils formed in glacial outwash. Spieden soils are in drainageways and depressions of outwash plains. Slopes are 0 to 2 percent. Average annual precipitation is about 24 inches. The average annual temperature is about 50 degrees F.

 

TAXONOMIC CLASS: Sandy, isotic, mesic Typic Endoaquolls (Photo taken during dry period reflecting dry soil color))

 

Average annual soil temperature - 50 to 52 degrees F.

Mollic epipedon thickness - 10 to 14 inches

Depth to redoximorphic features - 0 to 8 inches

Reaction - moderately acid to neutral

Particle size control section:

Clay content - 0 to 5 percent

Rock fragments - 0 to 30 percent gravel, 0 to 5 percent cobbles, 0 to 35 percent total

 

USE AND VEGETATION: These soils are used mainly for pasture, forestry, and watershed. Potential natural vegetation consists of Sitka spruce, red alder, lodgepole pine, clustered rose, salmonberry, trailing blackberry, red elderberry, common snowberry, stinging nettle, swordfern, slough sedge, field horsetail, and scouring-rush horsetail.

 

DISTRIBUTION AND EXTENT: Puget Sound valleys in Northwest Washington; MLRA 2, Northern Part. 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/S/SPIEDEN.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#spieden

 

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