2005-07-28_AgendaPacket - Laserfiche WebLink

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GRASS LAKE WATER MANAGEMENT ORGANIZAT>CON AGENDA ITEM Date: 07/28/05 Prepared by: Mark Maloney Item: D-1 Other Business Item Description: Lake Emily Homeowners' Association Don Iacoe, representing the Lake Emily Homeowner's Association, has asked to address the GLWMO Board with regard to water quality. concerns for Lake Emily. The Lake Emily Association has attempted to partner with homeowners along Lake Judy (which is connect via an overflow to Lake Emily) to improve water quality in both lakes. Attached is recent correspondence relating to the effort. Lake Judy, located upstream of Lake Emily, is classified as a Category III water body in Shoreview's Surface Water Management Plan, while Lake Emily is classified as a Category II water body.. Both lakes are .indicated as being jointly managed by the City and GLWMO. See attached Figure 11. After extensive public involvement. (Joint Roseville/Shoreview Ad Hoc Lake Owasso Area Watershed Citizens Committee) and study in the 1970's, a public improvement project was undertaken in 1980 that installed storm sewers in the area, and effectively connected the two lakes directly. The study/project files for the improvements indicate that. the impetus. came from a history of flooding. problems in the area of both lakes and also downstream south of Co. Rd. D in Roseville. The improvements included an overflow structure to maintain Lake Judy at what was considered a "normal level" while allowing for rapid discharge in the event of major storm events. The design and elevation of the outlet control were regulated and approved by the Minnesota Department of Natural Resources and Rice Creek Watershed District (this was prior to GLWMO's formation). To date there hasn't been any significant flooding or drainage concerns in the area; the improvements apparently addressed those concerns. Shoreview's Surface Water Plan indicates a downward trend. in water quality on Lake Emily according to data collected since 19$0. Little if any. water quality analysis has been historically performed or made public for Lake Judy but it is acknowledged that goals for improvement should be kept modest given the morphology and adjacent land uses. See attached excerpts from the Shoreview Plan. The 2001 GLWMO plan established that Shoreview is responsible for Secchi disc transparency, aesthetic and habitat monitoring on both water. bodies. To that end, the City recently developed a monitoring plan with Ramsey-Washington Metro WD staff and identified Lake Judy and Lake Emily as first priorities. Sampling will begin this. and annual reports will be prepared and presented to Shoreview and GLWMO concerning the findings, trends, etc. At this time there isn't any new information for Shoreview to report.. There aren't any public or private infrastructure or development projects currently programmed that could provide opportunities for significant BMP's. It is possible that further study, focused on water quality issues for the two lakes, may identifypossible actions/improvements that GLWMO take or program for the future.