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35. St. Paul- Ramsey. This watershed is recom- <br />. mended for critical priority because <br />of health- related lakes and generally <br />poor water quality. <br />Northern <br />Southern <br />Area <br />(sg.. mi.) TSS <br />33.6 14 <br />40.0 80 <br />04"—C'n_'u 30 butts <br />COD <br />68 <br />52 <br />TP TN <br />. 34 <br />2.4 <br />Pb <br />0.03 <br />. 53 5.4 0.06 <br />Northern Evaluation: The priority pollutant in this subwatershed is TP <br />because of the high number of priority lakes within it. The St. Paul water <br />supply lakes are Deep, Charley, Pleasant, Sucker and Vadnais; Wabasso Lake <br />is a high - priority lake because it has been identified as a lake of excep- <br />tional quality; finally, Owasso and Snail are "regionally important," <br />multiple- recreation lakes. Management of this basin is complicated by the <br />fact that water diverted from the Mississippi River at Fridley is dis- <br />charged into Charley Lake for the St. Paul water supply system, and water- <br />shed discharge occurs through the Vadnais Lake conduit to the McCarron's <br />supply system treatment plant. Management of the watershed coincides <br />management of the lakes because of the number of priority lakes. The <br />suggested management needs include those made for the Mississippi with <br />upstream from Fridley. Ppi River <br />Suggested management needs: <br />- Information program for homeowners around-priority lakes. <br />- 1,575 acre -feet of water storage in developing southwest portion of basin. <br />- 1,060 acre -feet of storage in agricultural /vacant part of basin. <br />- 950 acre -feet of storage from the urbanized part of the basin. <br />- Comprehensive storm water management in urbanizing part of basin. <br />Southern Evaluation: The Southern subwatershed is quite densely developed <br />and does include discharge into the combined sewer systems of St. Paul and <br />Minneapolis. The COD level of this watershed appears to be acceptable, but <br />the TSS level needs reduction by 64 percent. Management <br />are fairly limited because of the dense development. Severaltcommunpities <br />are currently involved in discussions on how to manage and pay for inflows <br />into the combined sewer system via Como and McCarron's Lakes. <br />Suggested management needs: <br />- Intensive housekeeping in urban area (3,900 curb -miles per year priority <br />- sweeping; cleaning of 650 catch basins per year). <br />- Developmentfoftsolutioonato lakesenverFle onrnnfiltration,.; <br />ct <br />