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Subwatershed 2: I-35E Policies: A.3, B.1, B.2, B.3, BA, B.5, C.1, C.2, C.3, CA, C.5, E.1, E.2, E.3, E.5, and F This subwatershed does not contain any lakes and is drained by numerous ditch systems in a tributary area of 6.28 sq mi. The subwatershed has not historically been included in the District's monitoring program and has experienced little development activity to date. Through the inventory process, the primary concerns in water management identified for the subwatershed were the lack of water quality monitoring data and the slow drainage of the ditch system. Baseline monitoring information was collected for this watershed as part of the Centerville/Peltier diagnostic and feasibility studies. The District's permitting program will continue to protect the large amounts of floodplain and wetland area within this subwatershed. The District will also be inspecting the public ditch systems within this subwatershed as part of the District's annual inspection program. Subwatershed 3: Rondeau Lake Policies: ~~~~~~~~~~~~~~~~F This subwatershed covers approximately 12.76 sq mi. Lakes in this are include Columbus, Crossways (Tamarack), and Rondeau. Two water management concerns were identified through the inventory process. First, the need to maintain the capacity of the large areas of floodplain and second, the need to address water quality of the lakes in the subwatershed. Because of the large storage available in this subwatershed and. also immediately downstream, runoff rate control is not necessary as the storage will buffer any foreseeable impacts of development. Agricultural land use is dominant in this subwatershed. As part of the Upper Watershed Improvement Project, cooperative programs with the Anoka SWCD will be explored to lessen potential problems associated with agricultural runoff. 4-16 10/97 I ~ I I I I I I - I I I I I I I