Laserfiche WebLink
Table 1. Vegetation Indicator Categories <br /> Indicator -.. Occurrence <br /> Obligate(OBL) Almost always <br /> Facultative Wetland(FACW) Usually <br /> Facultative(FAC) Equally likely to occur in uplands <br /> Facultative Upland(FACU) Rarely <br /> Upland(UPL) Almost never <br /> Hydric Soil <br /> A hydric soil is a soil formed under conditions of saturation, flooding, or ponding long enough during <br /> the growing season to develop anaerobic conditions in the upper part. Examples of hydric soil <br /> indicators include: the accumulation of organic matter, low-chroma soil matrices, gleying, redox <br /> concentrations, redox depletions, and hydrogen sulfide odor. <br /> Wetland Hydrology <br /> According to the 1987 manual, wetland hydrology is present when the area is inundated either <br /> permanently or periodically at mean water depths less than or equal to 6.6 feet, or the soil is <br /> saturated to the surface at some time during the growing season. The Midwest Regional Supplement <br /> requires fourteen (14) or more consecutive days of flooding or ponding, or a water table of twelve <br /> (12) inches (30 cm) or less below the soil surface, during the growing season at a minimum <br /> frequency of five (5) years in ten (10) (50% or higher probability) to satisfy wetland hydrology. <br /> The wetland hydrology criterion can be satisfied with observation of one (1) primary hydrology <br /> indicator or two (2) secondary hydrology indicators. Potential primary indicators of wetland <br /> hydrology may include, but are not limited to: inundation, saturation, water marks, drift lines, <br /> sediment deposits, and a thin muck surface. Potential secondary indicators of wetland hydrology <br /> may include, but are not limited to: surface soil cracks, drainage patters, saturation visible on aerial <br /> imagery, and the FAC-neutral test. <br /> OFF-SITE METHODOLOGY <br /> Map Review <br /> Prior to fieldwork, several mapping sources were consulted to identify potential wetland habitats. <br /> The sources consulted include the United States Fish and Wildlife Service (USFWS) National Wetland , <br /> Inventory (NWI), United States Department of Agriculture (USDA) Natural Resources Conservation <br /> Service (NRCS), formerly Soil Conservation Service (SCS) Soil Survey, Minnesota Department of <br /> Natural Resources (DNR) Public Waters Inventory (PWI), and United States Geological Survey <br /> (USGS)Topographic maps. Areas indicating evidence of potential wetland conditions were evaluated <br /> in greater detail through fieldwork. <br /> 2525 Shadywood Road Page 3 <br />