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1995-01-26_AgendaPacket
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1995-01-26_AgendaPacket
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Commission/Committee
Commission/Authority Name
Grass Lake WMO
Commission/Committee - Document Type
Agenda/Packet
Commission/Committee - Meeting Date
1/26/1995
Commission/Committee - Meeting Type
Regular
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r a r r ii <br />rl I r <br /> <br />SWMM Model Calibration -Model Verification/Diagnostic Study Update <br />The Final Report entitled 'SWMM Model Calibration/Verification and Diagnostic Study - <br />Lake Response Update" dated December 29, 1994 was sent out to the Board and the <br />Technical Advisory Committee prior to the meeting packet. We v~Till meet ~~ith the <br />Technical Advisory Committee prior to the January 26, 1995 GLWMO Board Meeting to <br />discuss the report in detail. A brief presentation regarding the major conclusions and <br />recommendations of the report will be made at the meeting. <br />Major Conclusions <br />The Grass Lake WMO XP-SWMM simulation is at the cutting edge of BMP modeling <br />in the country. <br />2. The Snail Lake loadings are nearly twice those originally predicted. <br />The Lake Wabasso loading from Lake Owasso is over predicted in the original and <br />current models. <br />4. The total loading to American Legion Park Pond and Lake Owasso is much lo~rer <br />in the current model due to higher removal efficiency estimates in Bennett Lake and <br />reduced tributary area loading. <br />5. Monitoring data for the lakes from MPCA's STOREY reference (1971 - 1993) shows <br />a higher current phosphorous level than was assumed in the original lake response <br />data. <br />Major Recommendations <br />The GLWMO should proceed with the three BMPs for Owasso, Wabasso and Snail <br />Lakes as recommended by BARR (1991). <br />The Board should lower its expectations for significant lake response to BMPs as <br />presented in the BARR (1991) Study. <br />
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