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8441 Wayzata Boulevard, Suite 350 B.A.Mittelsteac <br /> WSB � Minneapolis, MN 55426 Bret A.Weiss,P.;r. <br /> Peter R.Willenbring,P.E. <br /> Donald W.Sterna,P.E. <br /> • tel: 763-541-4800 Ronald B.Bray,P.E. <br /> &Associates, Inc. fax: 763-541-1700 <br /> July 20, 2000 <br /> Honorable Mayor, City Council and Staff <br /> c/o Michael Morrison, City Manager <br /> City of St Anthony <br /> 3301 Silver Lake Road <br /> St. Anthony, MN 55418-1699 <br /> Re: Review of Silver Lake West Evaluation Report <br /> WSB 1065.01 <br /> Dear Honorable Mayor, City Council and Staff: <br /> As requested, we have completed our review of the Silver Lake West Evaluation Report dated <br /> May 11, 2000. This report was completed by the Ramsey County Public Works Lake <br /> • Management Program in cooperation with the Silver Lake West Homeowner's Association and <br /> the Rice Creek Watershed District. <br /> The objectives of this study were to: <br /> • Monitor the inflow to Silver Lake to determine nutrient and water loads <br /> • Measure in-lake water quality during the growing season <br /> • Evaluate lake management activities to improve water quality <br /> • Facilitate the prioritization and implementation of lake management activities <br /> The watershed of Silver Lake is 629 acres in size and is broken up into 10 subwatersheds. Six <br /> inlets and outlets within the watershed were monitored*in 1999 for volume of water, total <br /> phosphorous, and total suspended solids. The Lake itself was also monitored in two locations at <br /> four depths for phosphorous content, secchi depth, chlorophyll a content,,and the'presence of . <br /> phytoplantkon and zooplankton. <br /> The results of the study indicated that the total phosphorous and total suspended solids loading is <br /> very high to Silver Lake West. Results indicated that the Lake has a very high nutrient and <br /> solids content. The major phosphorous and suspended solids contributor to the Lake is the <br /> Stinson subwatershed. This subwatershed is also the largest (192.8 acres). The second largest <br /> pollutant contributor to the Lake is the 42nd Street subwatershed (82.1 acres), although this <br /> watershed is smaller than the Apache subwatershed. The Apache subwatershed has the second <br /> M i n n e a p o l i s • S t C 1 o u d FAWPWM106M1\072000hmc.wpd <br /> Infrastructure Engineers Planners <br /> EQUAL OPPORTUNITY EMPLOYER <br />