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Andre* Cardinal <br /> June 24, 1993 <br /> Page 2 <br /> 1. There are no flood-storage benefits associated with restoring the lake since it is located nt <br /> the bottom of the watershed. <br /> 2. Only limited water quality benefits would be realized from the re-creation of the lake <br /> because Long Lake is the primary sink for upstream sediments and nutrients. While <br /> Locke Lake has received sediment from the floodplain and streambanks in its <br /> subwatershed, this could be reduced by an aggressive program of streambank and <br /> streambed stabilization. <br /> search, a comprehensive strearnbank erosion control program could <br /> 3a,,ed on-previous_Catxncil research <br /> cost the RCWD perhaps as little as two-thirds of the $750,000 estimate for alternative 4 for initial <br /> dredging while providing a permanent solution to the erosion problem. <br /> One of the goals of the project is to provide a continuous canoe route from the Mississippi River <br /> to several regional parks located along the Rice Creek flowage. The engineer's report concludes <br /> that excavating the lake to elevation 817 will provide for a low water level depth of three feet <br /> which will be sufficient to discourage emergent vegetation from the center of the basin and <br /> provide unrestricted canoeing. The report fails to mention the possibility of submergent <br /> vegetation which can also prevent easy and enjoyable canoeing. <br /> Taking Into account the limited water quality and quantity benefits associated with this project, <br /> along with the substantial costs, it seems prudent that the RCWD not pursue this project. <br /> Instead the Council suggests the watershed district concentrate on a more aggressive streambed <br /> and bank stabilization program to reduce sedimentation in Rice Creek. If the RCWD does <br /> decide to proceed with this project, the Council strongly recommends that a joint EAW be <br /> completed for the dredging part of the study and the dam construction. <br /> If you have questions or concerns about any issues raised in this letter, please contact Judy <br /> Hartsoe of the Council's staff at 291-6323. <br /> Sincerely, <br /> Dottie Rietow <br /> Chair <br /> DR:jh <br /> cc: Steve Woods, District Engineer <br /> John Flora, City of Fridley <br /> Susan Anderson, Metropolitan District No. 8 <br /> Ltid Z9tL VEIL ZT9 :01 892bb8LZti9 'Gil Sl adOS EZ:LT 176, 90 Ndf <br />