10/24/1994 Council Minutes - Laserfiche WebLink

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0?+ COUNCIL MEETING OCTOBER 24, 1994 used along a portion of the extended Woodridge Lane. This would lessen the impact on wetlands. It is planned that RCWD will approve the new street section so that it can be used in this area during construction next spring. Mr. Powell addressed the drainage for the new subdivision. He noted that one condition of the approval by the Planning and Zoning Board includes all RCWD and City drainage requirements. Currently, at this stage in the preliminary plat, not all design computations have been submitted by the developer's engineer. He has talked to the developer about increasing the capacity of the pond and also doing more excavating. Until the final design computations, which are included in the plans and specifications, are prepared no one can say how Mr. Thompson's property will be affected. A culvert going across the roadway is proposed to be eliminated because it would concentrate the flow onto Mr. Thompson's property. Mr. Powell said he would like to see an emergency overflow from the pond that would only spill water over the top of the roadway during 100 year floods and run down along the ditch onto Mr. Thompson property. The intent of the final design is to maintain the existing flow patterns as much as possible. Mr. Powell explained that the pond will be designed to hold the water under normal storm conditions and only overflow during flood conditions. Mr. Thompson explained that he has lived at his home for 21 years and the only times he has standing water on his property is when Rice Creek floods. This has happened only three (3) times. His property has never flooded from water flow off of the street. Mr. Thompson felt that the elimination of the culvert will help his situation. He spoke to Mr. Goertz today who was very helpful saying that he would ditch his side of the street if it was necessary to keep water from backing onto his property. Mr. Thompson said he would like to see a ditch on the east side of Baldwin Lake Drive down to the county ditch. This would be a reasonable solution. Mr. Thompson said he felt that his property should not be a solution to a water problem from a new development. Mr. Powell explained that drainage from many of the lots is being routed to the pond. There will not be a lot of flow to deal with. The final design computations will determine the discharge elevations and control elevations. Typically the flow from the pond will only be discharged during flood conditions similar to the way it may or may not be doing at this time. The amount of water being added is not that great and Mr. Powell was optimistic that the pond can be designed to accommodate the flow from the subdivision. He noted that culverts are a maintenance problem and concentrates water flow and then there is erosion to deal PAGE 7 1 1 1