Wetland Classification,Identification,Delineation-2014

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R. 26 W.; USGS Beauford quadrangle; lat. 44 degrees 6 minutes 33 seconds N. and long. 93 degrees 56 minutes 22 seconds W., NAD27. RANGE IN CHARACTERISTICS: The depth to free carbonates range from 28 to 50 inches. The thickness of the mollic epipedon ranges from 10 to 22 inches. The lacustrine mantle is 30 or more inches thick. The lacustrine sediments lack or have a trace of rock fragments. The glacial till has 2 to 8 percent rock fragments by volume of mixed lithology. The Ap or A horizon has hue of lOYR, value of 2 or 3 and chroma of 1 or 2. It is silty clay loam or silty clay. It is moderately acid to neutral. Most pedons have evidence of eluviation similar to the AB horizon or in the upper part of the Bt horizon. A few pedons have an indistinct E horizon with value of 3. The Bt horizon has hue of lOYR or 2.SY, value of 3 to 6 and chroma of 2 to 4. The low chroma is either a redox feature or the matrix in the upper part of Bt. The upper 20 inches of the Bt horizon typically averages between 38 and 50 percent clay. B/A clay ratios range from 1.2 to 1.4. The Bt horizon typically is silty clay loam or silty clay,but, in some pedons is silt loam at depths below 30 inches. It is neutral to strongly acid. Some pedons have a loam or clay loam 2BC horizon. Some pedons have a Bk horizon. The 2C horizon has hue of 2.SY, value of 5 or 6 and chroma of 2 to 4. It is loam or clay loam. Some pedons lack 2C horizons. The profile has formed entirely in lacustrine sediments that lack rock fragments. It is silt loam, silty clay loam, silty clay, or clay. COMPETING SERIES: These are the Arisbur�, Arispe, Chase, Flana�an, Greenton, Grundy, Herrick, Ipava, La�onda, Lamoni, Martin, Mavberry, Pawnee, Rutland, Sevmour, Tina and W.ymore soils. The Arisburg soils do not have free carbonates in the lower third of the series control section. The Lagonda and Pawnee soils have sola with a higher content of sand. The Arispe, Grundy, Herrick, Ipava and Seymour soils have thicker sola formed in loess. The Chase and Tina soils have thicker mollic epipedons. The Flanagan soils typically have thicker sola and formed in loess and the underlying till. The Greenton and Martin soils have their lower B or C horizons formed in residuum from limestone or shale. Also, the Greenton soils have redder hue in their lower B horizons and Martin soils have thicker mollic epipedons. The Lamoni soils have thicker sola with the upper part formed in loess or a mixture of loess and pedisediment and part of the B horizon is in a paleosol. The Mayberry soils have redder hue. The Rutland soils have thicker sola and strongly gleyed lower B horizons. The Wymore soils have thicker sola formed in loess, lack carbonates at depths of less than 40 inches and are on a warmer climate. GEOGRAPHIC SETTING: Shorewood soils have plane or slightly convex slopes on glacial lake plains and moraines. Slopes generally are about 100 to 250 feet in length with gradients of 0 to 12 percent. The Shorewood soils formed in clayey lacustrine material commonly 30 to 60 inches or more in thickness over friable loam or clay loam glacial till. In some pedons a silty layer up to 3 feet thick is between the clayey layer and the underlying deposits. Mean annual temperature is about 45 to 50 degrees F. Mean annual precipitation is about 25 to 32 inches. Frost free days range from 124 to 165. Elevations above sea level range from 900 to 1200 feet.