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<br /> <br />City of Arden Hills - Comprehensive Plan - DRAFT <br /> <br />10.2.1 Lakes and Water Bodies <br /> <br />As noted above, the City has seven lakes in or partially in Arden Hills. All <br />water bodies in the City are highly valued and warrant continued <br />protection. <br /> <br />Lake Johanna <br /> <br />Lake Johanna is the biggest lake in Arden Hills at 230 acres with a 4.25 <br />square mile watershed. It is up to 41 feet deep and has an average depth <br />of 17 feet. The lake is classifies as a GD lake. <br /> <br />The land on the north, west, and east sides of Lake Johanna is largely <br />developed with single family homes. Tony Schmidl Regional Park, <br />located on the northwest side of the lake. includes a swimming beach and <br />boat ramp. Presbyterian Homes, a senior housing facility, is located on <br />the southwest corner. Northwestern College occupies the peninsula on <br />the southern side of the lake. <br /> <br />A wide variety of recreational opportunities exist on Lake Johanna, <br />including swimming, skiing, and fishing. Boats are restricted to five miles <br />per hour within 250 feet of the shoreline, and there are restricted hours for <br />speeds in the rest of the lake. A wide variety of fish exist in the lake, <br />including Bass, Bluegills. Bullheads, Carp, Crappies, Muskies, Northern <br />Pike, Perch, Sunfish, and Walleye. <br /> <br />Storm water flows into Lake Johanna from Little Lake Johanna via <br />Ramsey County Ditch 4, which originates north of County Road C in <br />Roseville. City storm water is also routed into Lake Johanna on its west <br />and east sides. As part of the City's pavement management program, the <br />City is working to provide stormwater treatment systems to improve the <br />water quality of the stormwater that reaches Lake Johanna. <br /> <br />The Lake Johanna Improvement Society is an organization made up of <br />lake area property owners. The group coordinates lakes issues with the <br />City, including the boat speed iimits. <br /> <br />The Rice Creek Watershed District has noted that Lake Johanna has the <br />potential to become impaired without additional protection and attention to <br />water quality. The lake is listed on the impaired list for mercury <br />contamination. Althouqh the source and lonq-term impacts are unknown. <br />fish in Lake Johanna were found to have elevated levels of the chemical <br /> <br />DRAFT <br />5/15/2008 <br /> <br />67 <br />