Wetland Classification/ident/delineation-2007

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' ' The A horizon has hue of 10 value of 2 3 YR, or ,and chroma of 1 or 2. The A horizon is clay loam,loam,silt loaui, or silty clay loam.It has 20 to 30 perccut clay.It is mod�ately acid to neutral.An E horizon as much as 3 inches ' thick is in some pedons. The AB horizon has characteristics similaz to the A and the Bt. ' The upp�part of the Bt horizon has hue of lOYR or 2.SY,value of 3 to 5,and chroma of 2 ar 3. The lower pazt of the Bt horizon has a hue of 2.SY,value of 4 or 5,and chroma of 2 to 4. The Bt horizon is mostly clay loam or loam. � The argillic horizon ave�rages be�.wweeu 24 and 35 perce.nt clay and from 15 to 40 pprc�t fine sand or coars�rr. The Bt horizon is strongly acid to slighfly acid in the upper part and strongly acid to neatral in the lower part. The bulk deasity ranges from 1.30 to 1.45 gm/cc. ' Some pedons have a BC or Bk horizon. The C horizon has hue of 2.SY or SY,value of 4 to 6,and chroma of 2 to 4.It is loaw or clay loam.It is sli�tly ' alkaline or modeaately alkaline.The balk density ranges from 1.45 to 1.60 gm/cc. COMPETII�iG SERIE5:These are the Andres.Aurand(T),Aztaian.C�an •Darroch•��,Houst�ader(T),I,� � H M��N--S��4,T��.�oti�,Tiderishi,ViFar,and ilm�sc�ries.The Aurand(T)and Tiderishi series are prese�atiy not in the OSD file. The Andres,Aztalan,and Mokena soils have silty clay loam low�B and C horizons.Aztalan soils also have hue of 7.SYR in the B and C horizons. Crane soils have more than 8 percent rock fragments in the lower patt of the argillic horizon.Dan�och soils have C horizons of 1 stratified silty and sandy seidiments within the series control section.Gilboa soils have silt loam and silty clay loam in the upper part ofthe series control section.Honstenadex soils have 30 to 40 percent gravel in the lowea third ofthe series control sectian.I,a Hogue soils have less than 20 percent clay in the low�part of the series control section. ' Marcella�soils have less than 24 percent clay in the argillic horizon.Nachnsa soils do not have rock fragments in the upper part of the series control section.Neuno soils have more than 8 p�cent rcek fra�ents in the lower part of the series control sectian.Newhaven soils do not have frce carbonates in the saies control section.Odell soils have hue of lOYR in the lower B and C horizons and higha chroma in the nppea B horizon. Protivin soils have balk ' de,nsity geater than 1.60 gm/cc in the lowea part ofthe series control section. Vigar soils have a mollic�ipedon great�than 24 inches thick.Wilmer soils have more than 40 percent Sne sand or coars�in the azgillic horizon. � GEOGRApHIC SET'17NG:The Le Suear soils have slighdy concave,plane,or slightly convex slopes on moraines within the Dcs Moines lobe and Grantsburg sablobe of the Late Wisconsin glaciation. They formed in a calcareous,loaruy till. Slopes range from 1 to 3 perceut.Mean annual air temperature ranges from 45 to 52 degrees F.Mean annual precipitation ranges from 25 to 32 inches.Frost-free days range from 125 to 165. Elevation above ' sea level ranges&om 700 to 1600 f�eet. GEOGRAPHICALI.Y ASSOCTATED SOIIS:The main ones are the Cordova.Lest�,and Fi el soils. These � soils f�med in mataials similaz to the I.e Suair soils and are memb�s of a hydrosequence with the I.e Sueur soils. The poorly drained Cordova and Hamel soils are oommon associates on adjaceut nearly level slopes. The well drained Lester soils are the most common associate on the undulating to ge.nfly undnlating slopes. The well drained ' H �soils and the poorly drained I�soils are associates in some places. DRAINAGE AND PERMEABII,ITY:Somewhat poorly dramed. Surface runoff is low.Pcrmeability is modeaate. An apparent watea table is at 1.5 to 2.5 fcet dnring Nov�be,r to June in most years. ' USE AND VEGETATION:Mostly under cultivation with corn,soybeans,grain,and hay the ' ci al cro . Native vegetation was decidnons forest,dominanfly elm, � p � basswood,and maple in some areas,and oak with prairie ' and brush understory in the timbea ontliers within the prairie. DISTRiBUTION AND EXTENT: South-central Minnesota and north-central Iowa. This soil is ext�sive. � Swboda Ecolo 'cal Resources � 2180 Abingdon Way Project No.2007-056-03 Orono,Minnesota '