10-08-08 Council Agenda - Laserfiche WebLink

Home Browse Search

~~ ~~ ~ .,. ~~ ' ~ h o~ ~ k~ ~c't~ ~°a~caa~a 515 Little Canada Road, Little Canada, MN 55117-1600 (651) 766-4029 /FAX: (651) 766-4048 www, cl.litde-canada. mn. us MEMORANDiJM TO: Mayor Blesener & Members of the City Council FROM: Joel Hanson, City Administrator DATE: October 3, 2008 RE: Savage Lake Action Plan Update MAYOR Hill nlcsmxs- COUNCIL, Rici< Montour narbara Klan Johu Kcls Michael McGinty ADMINISTRATOR Joel R. Hanson Based upon t}le action plans attached (ATTACHMEN'T' I), here is an update as to the current status of each item: 'I'aslc 1 -Address Lakc Level Staff and some of the Savage Lake area residents have review file information at City Hall to attempt to correlate past data to the current outlet level of 895.1. There are minutes form 1979 at which indicate Council Member Nadeau reported, "that the high water level is the highest point on the freeway culvert". Rockne Waite has stated this elevation corresponds to the fence elevation of 899.2 shown on MnDot plan sheet #33. That would be slightly over afour-foot increase over t}le current outlet elevation. However, when we visited the Smith property at 334 Little Canada Road, it was obvious that a four-Foot increase in the lake level would cause flooding for a number of properties. Ramsey/Washington Metro Watershed District conducted an elevation survey of nine homes around East & West Savage Lakes that appeared to have the lowest elevations as compared to the lake level. (Letter fiom Barr Engineering dated September 30, 2008 is included at ATTACHMENT 2.) The results of this analysis is that the 100-year flood elevation is only .2 feet above the low entry elevation of the shop garage at 334 Little Canada Road. The house to the east (336 LC Road) is .73 feet above the 100-year flood elevation. Based upon RWMWD rules, they cannot support any increase in the normal elevation as that would increase the 100-year flood elevation. Given the elevation of the lowest structures, that would put them in the 100-year flood plain. One modification that maybe possible was suggested Mr. Tom Wenzel, a Little Canada Resident and a senior water resource engineer with the Minnesota Board of Water and Soil Resources. His comments are as follows: One item that 1 do not believe has been discussed in much detail, at least with the general public, is the improved hydraulics of the new structure. No doubt that this new