08/28/2006 Council Packet - Laserfiche WebLink

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• • • Zimmerman Soil Series (continued) The C horizon when present, has hue of 7.5YR to 2.5Y, value of 5 to 7, and chroma of 2 to 6. It is typically sand or fine sand, but some pedons have thin finer or coarser textured strata. COMPETING SERIES: These are the Biwabik (T), Eagleview, Faunce, Graycalm and Grettum (T) series. Biwabik soils have more than 5 percent rock fragments in the series control section. Eagleview soils have less than 40 percent fine sand in the series control section. Faunce soils have free calcium carbonate above 40 inches. Graycalm soils have more than 6 percent coarse sand or coarser in the series control section. Grettum soils are saturated in the lower third of the series control section. GEOGRAPHIC SETTING: These soils are nearly level to steep with convex slopes on outwash and lake plains, stream terraces, deltas lake terraces, dunes, and valley trains. Slopes are short and irregular with slope gradients of 0 to 60 percent. The Zimmerman soils formed in deeply leached, glacial outwash, lacustrine, or eolian origin. These sediments are Late Wisconsinan Age. Mean annual air temperature ranges from about 36 to 45 degrees F. Mean annual precipitation ranges from about 22 to 34 inches. Frost -free days range from 88 to 150. Elevation above sea level ranges from 670 to 1600 feet. GEOGRAPHICALLY ASSOCIATED SOILS: These are the excessively drained Sartell soils, well drained Anoka soils, moderately well drained Cantlin soils, somewhat poorly drained Soderville, and the poorly and very poorly drained Isanti soils. The Sartell, Cantlin, Lino, Soderville, and Isanti soils are in a hydrosequence with the Zimmerman soils. The Anoka soils have an argillic horizon whose lamellae total more than 6 inches thick. DRAINAGE AND PERMEABILITY: Excessively drained. Surface runoff is negligible to low. Permeability is rapid. USE AND VEGETATION: Most of the acreage in southern part is used to grow alfalfa, corn, and soybeans. Most in northern areas remain in forest. Native vegetation was primarily mixed oak forest or jack pine and red pine. DISTRIBUTION AND EXTENT: East - central and north- central Minnesota, Northern Lower and Upper Peninsula of Michigan, and possibly northwestern Wisconsin. Extensive. MLRA OFFICE RESPONSIBLE: St. Paul, Minnesota SERIES ESTABLISHED: Mille Lacs County, Minnesota, 1927. REMARKS: Diagnostic horizons and other features recognized are: Ochric epipedon - the zone from the surface to 27 inches (A and E horizons); argic subgroup - lamellae totaling less than 6 inches within 60 inches (E' & Bt horizon). This soil was formerly classified as an Alfic Udipsamment. A thick solum phase (60 to 80 inches) is being used- in the sand dunes of the Anoka Sand Plains. Type location moved from Anoka County, Mn. to Sherburne County, Mn., 11/96 to better exemplify the series concept within the MLRA. ADDITIONAL DATA: Refer to MAES Central File Code Nos. 1079 and 1550 for results of some laboratory analysis. The Preserve Conservation Development - Restoration and Management Plan B -7