07/25/2001 Env Bd Packet - Laserfiche WebLink

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*See text of subpart 10, item B, for wetland classification equivalency. NOTE: Wetland types Ll, L2, and R2 are generally not subject to this chapter and cannot be used for wetland replacement, but are included for possible future coordination purposes. (2) Hydrologic unit ratio. (a) Except as noted in unit (b), when a replacement wetland is located in a different hydrologic unit than the impacted wetland, as indicated by the United States Geological Survey Hydrologic Unit Map for Minnesota (Figure 2), the following ratios must be applied, as specified in subitem (5): Location of sites Replacement ratio Within same watershed 0.0 Different watershed 0.1 Different accounting unit 0.3 Different subregion 0.5 Different region_ 1.0 (b) The hydrologic unit ratio does not apply when replacement for impacts within counties or watersheds having 80 percent or more of their presettlement wetland acreage intact is accomplished in counties or watersheds in which 50 percent or more of the presettlement acreage has been drained or filled. (3) Inlet and outlet characteristics ratio. If the inlet and outlet characteristics of a replacement wetland differ from those of the impacted wetland, the following ratios shall be applied, as specified in subitem (5). The inlet and outlet characteristics ratio does not apply when replacement for impacts within counties or watersheds having 80 percent or more of their presettlement wetland acreage intact is accomplished in counties or watersheds in which 50 percent or more of the presettlement acreage has been drained or filled. Table 3. Inlet and Outlet Characteristics. Impact Replacement Flow- Tributary Floodplain Isolated Wetland Wetland Through Riverine Riverine 0.0 0.2 0.4 0.6 1.0 Flow - Through 0.2 0.0 0.4 0.6 0.8 Tributary 0.4 0.2 0.0 0.2 0.4 Floodplain 0.6 0.6 0.2 0.0 0.2 Isolated 1.0 0.8 0.4 0.2 0.0 51