09-18-1995 Planning Packet - Laserfiche WebLink

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Section I Introduction The Minnehaha Creek Watershed District (MCWD) is undertaldng a project with the objective of improving the quality of the water in Long Uke. The project will also beneilt Lake Minnetonka, which receives drainage from the Long Lake subwatershed, .k project envisioned by the MCWD in the preparation of it's Water Resource Management Plan m 1983. A feasibiUty study was performed by the MCWD in 1994 to provide recommendations for watershed improvements to the Long Lake subwatershed that would optimize water quaUty improvement of the lake. This design report provides final design mformauon, water quality benefits, and updated construction costs of the proposed watershed improvements. A. PROTFCT Bf^CKGROUND In July 1975, the Lake Minnetonka Conservation District filed a petition requesting the MCWD to undertake improvements in the Lake Minnetonka area. The purpose petiUoned imorovements was to alleviate water quantity and quaUly issues in the Lake Minnetonka watershed. A supplement to the original petition was filed in June 1977, requesting that storage and retention projects be constructed in stages and that the French Lake basin and Long Lake Creek Subwatershed be considered as a first stage. The petitions that were filed were consistent with the Overall Plan of the District for basic water management. Hennepin County subsequendy constructed improvements at the French Lake outlet with MCWD corroboration. The MCWD later undertook a study of the Painter Cree Subwatershed and ordered a storage and retention project which was constructed *