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<br />City of Ramsey February 12, 2007 <br />Functional Assessment of Wetlands <br />PRELIMINARY GIS WETLAND MANAGEMENT CLASSIFICATION <br />PEC completed a GIS-based analysis to generally place wetlands into preliminary <br />Wetland Management Categories. The following data was gathered and incorporated <br />into the GIS: <br />a.2003 Farm Service Agency (FSA) base-map <br />b.streams and waterways <br />c.National Wetlands Inventory (NWI) <br />d.Metropolitan Mosquito Control District (MMCD) digital wetland maps <br />e.Anoka County soils (SSURGO2) <br />f.Minnesota Land Cover Classification (MLCCS) System polygons <br />g.DNR protected waters inventory (PWI) <br />h.minor watersheds <br />i.city, county, and state roads <br />j.scientific and natural areas <br />k.County biological survey <br />l.Minnesota Natural Heritage Element Occurrences <br />m.City of Ramsey parcel map <br />For the purpose of this inventory and the functions/value analysis, wetlands within the <br />City of Ramsey boundary were identified from NWI and MMCD information. All <br />2 <br />wetlands considered in this inventory are greater than 0.25 acres in size. These criteria <br />resulted in 349 wetlands that were considered for the MnRAM analyses. Each wetland <br />was assigned a unique Wetland Identification (ID) formatted to meet the MnRAM <br />database requirements as follows: <br />02-032-25-010-006-A <br />County Code- Township- Range- Section- PEC ID- Wetland ID <br />In cases where a wetland existed within more than one section, the wetland was assigned <br />to the section containing the largest wetland area. Wetlands associated with the rivers <br />along the eastern and southern city boundaries were divided into smaller portions that had <br />similar land-use and hydrology based on aerial photo interpretation. <br />Once all wetlands were assigned a unique Wetland ID, each wetland polygon was <br />3 <br />attributed with Circular 39 and Cowardin classifications. If a wetland was comprised of <br />more than one wetland type, then the acreage was calculated for each type. The wetland <br />type provided information on the wetland’s hydrologic regime and other hydrologic <br />characteristics. This information was used to answer many of the MnRAM questions <br />relating to each wetland’s hydrology. <br />2 <br /> 0.25 acres was the size threshold discussed in the project proposal. <br />3 <br /> Wetland classifications are set forth in Wetlands and Deepwater Habitats of the United States(FWS/OBS <br />Publication 79/31; Cowardin et al. 1979) and Wetlands of the United States(USFWS Circular 39; Shaw <br />and Fredine 1971) <br />7 <br /> <br />