2002 Natural Resources Management

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North Cell. The surface area of the north cell is approximately 3.6 acres. Watershed area draining to the north cell is around 72 acres, comprising 38% of the total watershed area for Langton. The watershed has mostly single - family residential, with significant woodland pockets interspersed throughout the watershed. This is the shallowest part of Langton Lake with a mean depth of about 1.5 feet, and is dominated by emergent vegetation thereby limiting its use for recreational purposes. All of the stormwater drainage received by the north cell is untreated, causing it to function as a treatment cell for the middle cell to which it drains. Middle Cell. Surface area of the middle cell is approximately 10 acres. Less than 32 acres or 17% 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 treatment. The middle cell has benefited from the relatively small size of its watershed and from receiving pre- treated water from both the north and south cells. The lake outlet is a 12 -inch reinforced concrete pipe and located on the west shore of this cell just north of the walking trail. South Cell. The south cell has a surface area of 9.5 acres and a watershed area of 84.5 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 and wooded areas. The large commercial /industrial park to the south and west of the south cell drains first to the half -acre pond located to the southeast of the cell. An open channel then brings treated water from the industrial pond to the south cell. By catching raw stormwater from the industrial /commercial area and holding it for a short period, before it enters the south cell, the industrial pond provided significant water quality protection to Langton Lake on the whole. Langton is a popular spot for both active and passive recreation. It has a fishing pier in the south cell and short walking trails. Langton is managed by the Minnesota Department of Natural Resources (MN DNR) as a kids fishing pond. A large number of Walleye 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 adult Bluegill and /or Black Crappie. City of Roseville 41 Parks Natural Resource Management