02/27/2008 Env Bd Packet - Laserfiche WebLink

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COMPETING SERIES: These ar e the Hamar, Hangaard, Isan, Medano, and Venlo soils. Hamar, Hangaard, Medano, and Venlo soils have neutral or higher pH in the series control section. Isan soils have less than 85 percent sand passing the No. 40 sieve. GEOGRAPHIC SETTING: These soils have plane or concave slopes in depressions, drainageways, and low flats on outwash plains and valley trains. Slopes range from 0 to 2 percent. The Isanti soils formed in gravel free, noncalcareous sandy glacial outwash or eolian sediments of Late Wisconsinan Age. Mean annual air temperature ranges from about 37 to 45 degrees F. Mean annual precipitation ranges from about 22 to 33 inches. Frost -free days range from 90 to 150. Elevation above sea level ranges from 700 to 1600 feet. GEOGRAPHICALLY ASSOCIATED SOILS: These are principally the Anoka, Lino, Sartell, and Zimmerman soils. The Lino soils are on slightly higher elevations and are somewhat poorly drained. The Anoka, Sartell, and Zimmerman soils are better drained. DRAINAGE AND PERMEABILITY: Poorly and very poorly drained. Surface runoff is very low to ponded. Permeability is moderately rapid in the upper part and rapid in the lower part. An apparent water table is at plus 1 foot to 0.5 feet for the very poorly drained, depressional phase, and 0.5 to 1.5 feet for poorly drained phase at some time Oct -June in most years. USE AND VEGETATION: Mostly idle or in pasture, but some areas are drained and cropped to corn, soybeans, potatoes, or sod. Native vegetation was primarily grasses, sedges, and willow. DISTRIBUTION AND EXTENT: East central Minnesota and possibly northwestern Wisconsin. Moderately extensive. MLRA OFFICE RESPONSIBLE: St. Paul, Minnesota SERIES ESTABLISHED: Mille Lacs County, Minnesota, 1927. REMARKS: Diagnostic horizons and feature recognized in this pedon are: mollic epipedon - the zone from the surface to 10 inches (A horizon); aquic subgroup - low chroma matrix immediately below the mollic epipedon (Bgl horizon). Classification only was changed 5/94. Competing series and other updates will be made later. ADDITIONAL DATA: Refer Minnesota Agricultural Experiment Station Central File Code No. 1071 for results of some laboratory analyses of the typical pedon. SIR # MN0196; MN0651, depressional phase. National Cooperative Soil Survey U.S.A. Foxborough Conservation Development Restoration and Management Plan A -3 • •