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SPTOI.AL LAKE ELMO COUNCIL MEETING, MAY 11, 1983 Mayor Feder opened the Special Emergency Meeting on Lake Jane Flooding at 6:10 p.m. Allen Dornfeld, President, Valley Branch. Watershed District, introduced Watershed Bagineer, Nels Nelson, who explained the Watershed's request to sandbag the weir on Olson Lake to prevent flooding on Lake Jane. Looking for alternatives, --Noll Nelson - this request is in response to numerous calls about the flooding situation on Lake Jane, Presently is a, threat situation, rather than a flooding situation. Outlined. the varying lake levels. Two suggestions being considered: 1. Temporary - based on the idea that the weir and the pipe on Lake Olson have a greater capacity to permit inflow into Lake Jane than the pump has capability to pump cut, a temporary sandbagging of the weir will permit maintenance of the preseni; levels on Olson avid Demontreville while permitting the pump to catch up with the inflow. The present electric pump can only take cane of 2cfs, Two homes on Lake Jane are threatened, with .flooding. If Olson or Demontreville begin to rise the sandbags will be removed - if Olson or Demontreville fall, more sandbags can be added until Jane is back to a safe level that the pump can handle. Anticipate this process would have to be maintained for a. month before Jane is Stout of the woods". 2.. Long Range Plan - Reduce eon.trol level on weir and/or place a small hole in weir so that water can flow out earlier in the year. This would add water inflow earlier so that the pump could .start pumping earlier, COUNCIL COMMENTS: --Mayor Eder - need to have an awareness that the weir was put in at an elevation that was the settlement of a law suit. Suit involved residents on both sides of the weir, ---Yraser - asked Nelson for a non -technical explainationg calling for this emergency action, --Nets Nelson.- trying to respond to calls and letters received from residents on Lake Jane, Presently there is enough, water on Lake Demontreville to cause flooding on Lake Jane, —Fraser - asked about upstream impact of this proposal.. --Nelson - proposal is to hold the level of Demontreville where it is. Heavy rain would cause minimal problems upstream, No specifics for upstream are available. —Morgan - what plans does VBWD have to get a bigger pump on Jane. --Nelson - currently getting estimates for a larger capacity pump - this will be discussed at the Districts May 12 meeting. Estimates to resat a larger capacity pump are running from $6,000 to $22,000 for 1 to 6 month rental. Also looking into purchasing larger electric pump - estimates running in excess of $259000. Would have to use a diesel now since there is not adequate electric service for a larger capacity electric pump at the present pump site, Can run 2cfs now and can go up to i� oft, but not sure for how long the plastic pipe can handle 2cfs. Considering .replacing the plastic pipe with steel piping up the hill, then continue with plastic. ..-Eder - how long will Demontreville and Olson stay above the weir? --Nelson - under this proposal, one month. Water level has been at weir level for 2-3 weeks. Identified the two homes threatened with flooding - Evanoff & --Eder - know the possibility of damage on one side but not on the other as far as vegetation damage. Lawsuit concerned vegetative damage. 199is being the case would oppose sandbagging and consider only pumping using a larger capacity diesel pump. --Nelson - Demontreville has .fallen I", but Jane is still coming up. --Scotty Lya11, T3irchbard Tr, - should consider impact on threatened homes on windy days where waves would these homes, --Mrs. Evanoff, Jane Rd. N, - presently waves hit bay window of their home on windy days.