Laserfiche WebLink
Stantec <br /> CENTERVILLE SURFACE WATER MANAGEMENT PLAN <br /> PHYSICAL ENVIRONMENT <br /> September 2012 <br /> 3.0 PHYSICAL ENVIRONMENT <br /> 3.1 GENERAL LOCATION <br /> The City of Centerville is situated in the southeast region of Anoka County, Minnesota. Figure 1 <br /> illustrates where the City is situated within the Twin Cities seven county metro area. The City is <br /> adjacent to Centerville Lake and Peltier Lake and is surrounded by the City of Lino Lakes. <br /> 3.2 GEOLOGY AND TOPOGRAPHY <br /> The City is located in the northern portion of the Rice Creek Watershed District. The land is <br /> generally flat with major drainageways and creeks discharging into Peltier and Centerville <br /> Lakes. The ground elevation in the City ranges from approximately 912 feet to 886 feet NGVD, <br /> with the lowest areas located near the lakes. The USGS topographic map for the area is <br /> provided in Figure 2. <br /> 3.3 SOIL CHARACTERISTICS <br /> The NRCS Soil Survey of Anoka County indicates that soils in the area are mostly of the <br /> Nessei- Dundas- Webster association — nearly level to gently sloping, moderately well drained <br /> and poorly drained soils formed in loamy glacial till. The water table is noted as seasonally high <br /> in most of the soil types listed for this area. The soil survey shows several divisions of soil types <br /> within the City. <br /> The Natural Resources Conservation Service (NRCS) has established a series of soil groups <br /> based on infiltration rates of the soil: <br /> HYDROLOGIC SOIL GROUP A - Low runoff potential, high infiltration rate <br /> HYDROLOGIC SOIL GROUP B - Moderate infiltration rate <br /> HYDROLOGIC SOIL GROUP C - Slow infiltration rate <br /> HYDROLOGIC SOIL GROUP D - Very slow infiltration rate, high runoff potential <br /> The runoff potential of an area is determined using these general soil characteristics in <br /> combination with land use classification, vegetation of the area, and rainfall intensities as <br /> determined from various design storms. As illustrated in Figure 3, the City contains a wide <br /> geographic variability of hydrologic soil groups, with the majority of the City being in the B and C <br /> categories. <br /> One Team. Infinite Solutions. <br /> 3.4 <br /> 23 <br />