05-06-13 Council Packet - Laserfiche WebLink

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City of Lino Lakes SWMP | February 8, 2013 Draft | 61 Policy 4.4.1A: Preserve and manage the storage associated with the 100 -year floodplain along and within water -bodies to minimize the frequency an d severity of flooding caused by high water. Policy 4.4.1B: Use the natural characteristics of the City’s watersheds (e.g., pond, swales , wetlands) in combination with development standards and projects, to reduce present and future flood damage and enhan ce the quality of surface and ground water. Policy 4.4.1C: Require that adequate drainage facilities and easements are provided with land development activities. Policy 4.4.1D: Continue to enforce floodplain regulations to ensure that new structures are adequately elevated above identified flood elevations. Policy 4.4.1E: Update the Floodplain Overlay Ordinance as required by FEMA and the Minnesota DNR, or as needed, to ensure adequate protection for structures and eligibility for flood insurance program s. Policy 4.4.1F: Support efforts to restore and reestablish floodplain basins to improve their natural function. 4.5. Public Ditch System Issues Several of the major drainageways in the City are public ditch systems managed by the Rice Creek Watershed Distr ict. Some of the public drainage systems are located within completely urbanized areas, have been totally or partially replaced by storm sewer pipe, and no longer serve agricultural land or provide agricultural benefits. These systems function as the outl et for storm water runoff. Other public drainage systems are comprised nearly entirely of undeveloped/agricultural areas that are primarily forecasted for urban development. Public ditch systems need to be managed to provide the drainage services suited t o the land contributing to the system. Goals & Policies Goal 4.5.1 : Ensure the m anag ement and operat ion of drainage systems and use of waterways in a manner which recognizes the origin of the system (e.g., constructed vs. natural), the interconnectedness of resources, and present and future conveyance needs, while considering legally established rights. Policy 4.5.1A: Work with the RCWD to facilitate effective management of the public ditch system, as needed, to support the recognized functions of these systems. 4.6. Groundwater Management Issues The City of Lino Lakes relies solely on groundwater as its water supply source. The Prairie du Chien - Jordan aquifer serves as the City’s municipal water source. There is a growing concern that water supplies may be depleting. The Master Water Supply Pla n by the Metropolitan Council indicates the potential for a significant decline in aquifer water levels, up to a 50% decline in available head by 2030. This will affect not only the drinking water supplies, but al so resources that may depend on groundwater , such as wetlands, lakes and streams.