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Coveland soil series

Typical profile of a Coveland soil. The soil is somewhat poorly drained as indicated by the yellow and brown stains at a depth of about 20 inches. A compact densic horizon is at a depth below 110 centimeters. (Soil Survey of Island County, Washington; by Bruce Lindsay, Erik Dahlke, and Toby Rodgers, Natural Resources Conservation Service)

 

The Coveland series consists of deep to a densic contact, somewhat poorly drained soils formed in glacial drift underlain by dense glaciomarine deposits. Coveland soils are in valleys and outwash plains and have slopes of 0 to 15 percent. The average annual precipitation is about 787 mm and the average annual temperature is about 9 degrees C.

 

Average annual soil temperature - 10 to 11 degrees c.

Depth to redoximorphic features - 23 to 46 cm

Depth to densic contact - 100 to 150 cm

Reaction - slightly acid to moderately alkaline

Particle size control section:

clay content - 18 to 35 percent

rock fragments - 0 to 15 percent gravel

 

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Aquic Haploxeralfs

 

USE AND VEGETATION: Coveland soils are used for forage crop production, livestock grazing, and timber production. Potential natural vegetation consists of western redcedar, Douglas-fir, grand fir, lodgepole pine, red alder, common snowberry, trailing blackberry, salmonberry, stinging nettle, salal, swordfern, and bracken fern.

 

DISTRIBUTION AND EXTENT: Puget Sound valleys in Northwest Washington; MLRA A2, Northern Part. Series is of small extent.

 

This revision (5/2006) includes a change in classification and typical pedon, based on laboratory data and field investigations. The previous classification was fine, isotic, mesic Aquic Palexeralfs. The typical pedon was moved from Skagit County to San Juan County. Further investigation needed for similar Agnew series. Under current classification the only difference is active vs. superactive CEC class. Agnew series are likely deep instead of very deep to a densic contact.

 

For additional information about the survey area, visit:

www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/washington/isl...

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/C/COVELAND.html

 

For acreage and geographic distribution, visit:

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

 

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Uploaded on March 3, 2011
Taken in January 2002