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Soils <br />The soils of the City of Falcon Heights are found in Figure 23 on the following page. The <br />main soil classification groups are based on hydrologic features of the soils. Hydrologic <br />soils groups are used to estimate runoff from precipitation. Vegetation, soils composition, <br />and slope area are all used to determine the soils runoff potential. There are four <br />hydrologic groups, Table 5, below, provides a summary of the four hydrologic soil <br />groups. <br />Table 5 -Soil Classification <br />Hydrologic Description <br />Grvu <br />A Soils having high infiltration rates when thoroughly wet (low runoff <br /> potential). Deep, well drained to excessively drained sand or gravelly <br /> sand. <br />B Soils having a moderate infiltration rate when thoroughly wet. Moderately <br /> deep or deep, moderately well drained or well drained with moderately to <br /> moderatel coarse texture. <br />C Soils having a slow infiltration rate when thoroughly wet. Soils that have <br /> a layer that impedes the downward movement of water or soils of <br /> moderatel fine texture or fine texture. <br />D Soils having very slow rates of infiltration when thoroughly wet (high <br /> runoff potential). Soils consists of clays with high shrink-swell potential, <br /> soils that have a permanent high water table, soils that have a claypan or <br /> clay layer at or near the surface and soils that are shallow over nearly <br /> im ervious materials. <br />Urban Areas of development that are covered by asphalt, concrete, and <br />Land buildin s. <br />Data from SCS, 1977. <br />Groundwater <br />Groundwater needs protection because it is a source of drinking water for the <br />metropolitan area. The Ramsey County Soil and Water Conservation District has written <br />two documents for the County that describe both the status of groundwater in the county <br />as well as the anticipated role of each local government in the protection of groundwater <br />resources. <br />• <br />• <br />Ramsey County adopted the Groundwater Quality Protection Plan in May 1996. This <br />plan outlines the roles and responsibilities of county and local governments, including <br />watershed management organizations, in groundwater management in the County. The <br />main responsibility assigned to the WMO (now the CRWD) is to adopt the County plan • <br />and amend or incorporate this plan into the CRWD Watershed Management Plan. There <br />Falcon Heights Comprehensive Plan 2008 Draft -January, 2008 Part III: Infrastructure, Page III-28 <br />