07/25/2007 Env Bd Packet - Laserfiche WebLink

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• (b) Enhance floodplain characteristics that promote the natural attenuation of high water, provide for water quality treatment, and promote groundwater recharge. (c) Preserve and enhance the natural vegetation existing in floodplain areas for fish and wildlife habitat. 2. REGULATION. No person may alter or fill land below the 100 -year flood elevation of any public water, public water wetland or other wetlands without first obtaining a permit from the District. 3. CRITERIA FOR FLOODPLAIN ALTERATION. (a) Encroachment into and the placement of fill within the 100 -year floodplain are prohibited unless fully compensatory storage at the same elevation is provided. Creation of floodplain storage capacity to offset fill must occur within the floodplain of the same water body, and within the original permit term. If offsetting storage capacity will be provided off site, it shall be created before any floodplain filling by the applicant will be allowed. Encroachment and /or filling will be allowed in flood fringe defined by the municipality according to FEMA procedures and for which encroachment is regulated by the municipality. (b) Construction of impervious areas within floodplain will not be allowed within the designated groundwater recharge areas for the Prairie du Chien - Jordan formation (as defined by Map 17 of the District's Water Resource Management Plan) except for road construction and trails. (c) To protect water quality and the conveyance capacity of the flood plain, the District will not permit site development that would involve the outside storage of soluble, toxic, or buoyant materials. (d) Structures and facilities subject to flood damage built within the 100 -year floodplain will have two feet of freeboard between the lowest floor and the 100 -year flood profile. 4. DRAINAGE EASEMENTS. Applicant will provide for District approval a flowage and drainage easement conveyed to the and use authority over areas of public waters, public ditches, public waters wetlands and other wetlands inundated by the 100 -year flood. An easement on a public ditch must be a minimum of 33 feet each side of centerline and specify a District right of enforcement to that minimum width. 5. REQUIRED EXHIBITS. The following exhibits must accompany the permit application. One set, full size (22 inches by 34 inches); two sets, reduced to maximum size of 11 inches x 17 inches. (a) Site plan showing property lines, delineation of the work area, existing elevation contours of the work area, ordinary high water elevation, and regional flood elevation. All elevations must be reduced to NGVD (1929 datum). (b) Grading plan showing any proposed elevation changes. (c) Preliminary plat of any proposed land development. DRAFT DOCUMENT 19