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City of Arden Hills - Comprehensive Plan - DRAFT 13.1.3 Storm WaterlSurface Water Drainage Storm drainage is provided throughout the City with a network of storm sewers, open ditches, holding ponds, which are under the jurisdiction of the City's Surface Water Management Utility. Similar to the water and sewer utilities, the Surface Water Management Utility has been designed to be financially self-supportive for day-to-day operations, ongoing maintenance, and upgrades. Arden Hills is in the Rice Creek Watershed District, which is the regulating authority for stormwater in Arden Hills. Much of the surface water in Arden Hills drains towards Rice Creek, which flows southwest through Anoka and Ramsey County toward the Mississippi River approximately 1.5 miles north of Interstate 694 in Fridley. Stormwater from Roseville flows north through Ramsey County Ditch NO.4 into Little Lake Johanna and Lake Johanna. From there, the water continues north into Long Lake in New Brighton. Lake Josephine also drains into Lake Johanna. Round Lake flows into Valentine Lake, which rains into Long Lake. Sunfish Lake drains into Marsden Lake, which flows into County Ditch NO.1 and drains into Rice Creek. Although Karth Lake does not have any natural outlets, a pump station manages the water level and any water pumped out drains to Valentine Lake through storm sewer and ditch systems. Although most of the land south of County Road 96 is developed, not all areas are served by the City's stormwater system. The City does require storm sewer to be installed with road reconstruction projects; however, this policy is not always practical or feasible, and alternate design standards may sometimes be appropriate. A process to allow alternates to storm sewer is needed. The City completed its Surface Water Management Plan, which was approved by the Rice Creek Watershed District in 2002 (Appendix G). The Rice Creek Watershed District is currently in the process of updating their Water Resource Management Plan. Once their update is completed, the City will update the Surface Water Management Plan. Since a land use plan for the proposed redevelopment of the TCAAP property has not yet been adopted, the current Stormwater Management Plan does not yet reflect future stormwater management needs on the TCAAP property. The Surface Water Management Plan will need to be updated once a final land use plan for the TCAAP property has been selected. DRAFT 4/18/2008 100