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CCP 09-10-2001
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CCP 09-10-2001
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<br />I <br />I <br />, <br />I <br />I <br />I <br />I <br />I <br />I <br />'- <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I' <br />I <br /> <br />9.7.01 <br /> <br />Section 2 - Physical Environment <br /> <br />Geology and Topography <br /> <br />Arden Hills is located in Ramsey County, which is dominated by the Eastern <br />St. Croix Moraine. This glacial and terminal moraine is characterized by steep <br />hills interspersed with deep depressions. The depressions are occupied by <br />small lakes or are ftIled with peat. <br /> <br />The topography of the City is relatively diverse, with undulating to steep <br />slopes. The highest point in Ramsey County is located in Arden Hills, on the <br />TCAAP property. The entire City is ultimately tributary to Rice Creek. <br /> <br />Detailed descriptions of the City's bedrock geology can be obtained from the <br />Rice Creek Watershed District. In addition, the Minnesota Geological Survey <br />can provide maps detailing the bedrock hydrogeology of Minnesota. <br />addressing rock formations and aquifers. <br /> <br />Soils <br /> <br />Most of the soils within Arden Hills are glacial tills. The soils tend to be well <br />drained, and moderately coarse textured. <br /> <br />The main source of information on existing soils found within the City of <br />Arden Hills was prepared by the Natural Resource Conservation Service <br />(NRCS). The NRCS has established four general types of soil groups based on <br />texture and slope as described below: <br /> <br />. Group A - Low runoff potential, high infiltration <br /> <br />. Group B - Moderate infiltration <br /> <br />. Group C - Slow infiltration rate <br /> <br />. Group D - Very slow infiltration rate, high runoff potential <br /> <br />The runoff potential of an area is determined using these general soil <br />characteristics in combination with land use classifications, vegetation of the <br />area and rainfall intensity determined from charts for the various design <br />storms. <br /> <br />City of Arden Hills, Minnesota <br />Local Stormwater Management Plan <br /> <br />A-ARDEN0101.00 <br />Page 8 <br />
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