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3/7/96 to: City of Roseville, Dennis Welsch, city council members from: Peggy Egli. 705 Heinel Circle regarding: Lake Owasso dimtnsions relative to possible slX.ed limit in SWend I bclie,'c that a reduecd speed limit in the SW end ofLak.e Owasso. in conjunction with a ISO' buffe.r zone as proposed by Shoreview: would be a satisfactory solution to: _ maintain water quality and reducc boat-generated turbidity in the lake. _ address residents' concerns about increased speedboat noise. _ maintain aesthetic and wildlife habitat value of the SWend oftbe lake. _ prevent the installation of a new slalom COUISe at the lake's narrowest poinl. Recause instiluliun ur a speed limit wuu1d nece.~..itale a change in the Joinl PnweTS A greemenl with . Shoreview, 1 think we should hold on to our legal right to the 300' buffer in the current ordinance unti1 we can get the agreement of Shore view and appmval by the DNR of the speed limit. T would not agree to changing to 150' before another protection such as a speed limit was in place. By cutting out and weighing portions of the DNR and Roseville maps of Lake Owasso. I was able to determine the proportion of the lake which would be affected by a reduced speed limit. I have identified three potential boundaries for the limit, A (least restrictive), B. and C (most restrictive). Although I identified A.B. and C roughly based on lake dimensions. they correspond approximately to: r A D C 2924 W Owasso 2968 W Owasso 3016 W Owasso 699 Heinel 641/639I1einel 585 He.inel DNR omdal lake map of Owasso: I cut out the entire lake minus floating and emergent vegetation. sinee these regions are not acr.essible to speedboats. Regions A.B. and C (potential speed limit zones) were removr.d (0 determine the % of navigable lake remaining. Entire lake minus floating and emergent vegetation Shore,'iew Roseville 100% 48.9% 51.1% Entire minus A Entire minus A+B Entire minusA+B+C 89.1% 86.5% 83.1% Roseville only minus A RoseviUe only minus A+B Roseville only minus A+B+C 78.7% 73.7% 66.9% Rosevllle city map . I cut out the Roscville portion of the lake. minus the 150' proposed buffer. Regions A,B. and C (potential speed limit zones) were removed to detennine. the % of navigable lake remaining. They arc (to the best of my ability)tbe same as A,B,C above. Roseville portion of Owasso Roseville minus A RoseviUe minus A + B RnseviHe minus A+R+C. 100% 74.1% 68.5% 61.2%