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CMP Part 3A. Environmental Protection Plan <br /> Long Lake is the largest and most actively used lake in Orono other than <br /> Minnetonka. The east and west shores have been developed at rural residential <br /> densities. The north shore has mixed rural residential areas and one denser <br /> housing cluster dating from the 1930's. The south shore is bordered by the City <br /> of Long Lake and is urbanized to the same degree as much of Lake Minnetonka. <br /> Long Lake has experienced storm water problems as well as increased usage <br /> pressures resulting from over use of power boats and personal watercraft. The <br /> Minnehaha Creek Watershed District in the late 1990's implemented a multi- <br /> faceted stormwater improvement project for Long Lake including construction of <br /> water quality retention ponds in the two main tributaries feeding the lake, and <br /> alum treatments within the lake basin for phosphorus control. <br /> Orono also has identified a number of protected tributary streams which are <br /> subject to Shoreland regulations. These are shown in the following table and <br /> depicted on Map 3A-7: <br /> Table 3A-3: Protected Tributary Streams <br /> Tributary Name From: To: <br /> Section Township Range Section Township Range <br /> Long Lake Creek 35 (Basin 160-P) 1 l 8 23 10(Basin l4l-P) 117 23 <br /> "Wolsfeld" Creek 27 (Ciry limit) 1 18 23 26(Basin 160-P) 118 23 <br /> Tributary to Wolsfeld Creek_ 26(City limit) 1 l 8 23 27 l l 8 23 <br /> from Holy Name Lake � <br /> Dickeys Lake Creek 27 (Basin 161-P) I 18 23 34(Basin 160-P) 118 23 <br /> Stubbs Bay Creek 32 (Basin 162-P) 118 23 5 (Basin 133-P) 117 23 <br /> (aka Classen Creek) <br /> Painter's Creek 30 (Basin ]54-P) 118 23 31 (City limit) 118 23 <br /> The second most significant and most universal natural amenity in Orono <br /> are the many wetlands and marshlands comprising Lake Minnetonka's <br /> upland drainage system. Orono's nearly 1600 acres of marshland and wetlands <br /> comprise fully one-sixth of the City's land area. Map 3A-2 indicates how the <br /> marshland and drainageways are scattered throughout the City. <br /> These natural ponding areas serve an integral function within the natural <br /> ecological system of Lake Minnetonka. The "Harza Study" includes quantitative <br /> data identifying how the wetland soils easily retain phosphorus, and how marsh <br /> plants take up and incorporate large amounts of nitrogen and phosphorus into <br /> their growing tissue. Thus, the marshlands are the primary pollution filters for <br /> Lake Minnetonka's surface water runoff. <br /> City of Orono Community Management Plan 2008-2030 Page 3A-5 <br />