2002 Draft Natural Resources Management

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North Ceil. The surface area of the north cell is approxi�nately 3.6 acres. Watershed area draining to the north cell is around 72 acres, comprising 38°Io of thc tatal watershed area for Langton. The watershed has mostly single-famiIy residential, with significant woodland packets interspersed throuahout the watershed. This is thc shallowest part of Langton Lake with a me��n depth of about 1.5 feet, and is dominated by emergent vegetation thereby limiting its �se for recreational purposes. All of the stormwater drainage received by the north cell is untreated, causing it to function as a treatrnent cell for the middle ceIl to which it drains. Middlc Cell_ Surface area of the middle cell is approximately 10 acres. Less than 32 acres or 17°Io of the Langton Lake watershed drains to the middle cell. Portions of the watershed from the moderate density residential to the east, and a small industrial area to the west drain direct stormwater runoff to this cell without prior trcatrtzent. The iniddle cell has benefited from the relatively small size of its watershed and from receivin� pre-treated water frozn both the north and south cells. The lake outlet is a I2-inch reinforced concrete gipe and located on the west shore of this cell just north of the walking trail. South Cell. The south ceil has a surface area of 9.5 acres and a watershed area af $4.5 acres, 44 % of the total drainage area to Langton Lake. It receives direct runoff from 17 acres or 9% of the total watershed area. Most of the direct runoff to this cell comes from residential a�id waoded areas. The large comrnercial/ind�strial park to the south and west of the south cell drains first to the half-acrc pond located to the southeast of the cell. An opcn channel then brings treated water from the industrial gond to the south cell. By catching raw stormwater from the industriaUcommercial area and holding it for a short period, before it enters the south cell, Ehe industrial pond provided significant water yuality protection Eo Langton Lake on the �vhole. Langton is a popular spot for both active and passive recreation. It has a fishin� pier in the south ccll and short walking trails. Langton is mananed by the Minnesota Department of Natural Resources {MN DNR) as a kids fishin� pond. A lar�e number of WalIcye and Tiger Muskie fry were introduced into the lake in 1995 and 1996; however, in the last four years the predominant choice for stocking has been aduIt Bluegiil andlor Black Crappie. Cih� of Roseville Pcarks h'crtcrrrrl Resorrrce Mnrurgemer�t 39