Agenda - Council - 02/14/1995 - Laserfiche WebLink

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.COndition of Drainage System The conditions associated with the lack of drainage, which was brought to the Council's attention in 1989 and again last year by Mr. Terry Hendriksen, involves a series of culverts md natural low areas in, Section #22 between 156th Avenue N.W. and Wetland #656. ~is area naturally drains northward from 156th Avenue N.W. near Hematite until it ~tersects with County Ditch #3, approximately 300 feet north of 157th Lane N.W. In ~m, County Ditch #3 drains eastward for 3.2 miles until it discharges into the Rum River near 161st Avenue N.W. Winter conditions have allowed a good opportunity to observe the condition of this &ainage system. From 156th Avenue N.W., north to County Ditch No. 3, the length of the proposed Drainage Plat No. 1, there are several dug ponds and open water areas. The remaining length of the:proposed ditch contains almost wholly Iow-land vegetation, ~nsisting primarily of shrubs and sedge grasses. The western most 2,000 feet along ¢our[.~ Ditch No. 3 consists primarily of sedge grasses with no discernable channel remmmng. A clear ditch becomes discernable for a distance of 2,700 feet upstream of Xenon Street N.W. Although this ditch has a large number of fallen trees across the identifiable ditch, they would not prevent water flow. The ditch had open water and was clearly flowing from a point 300 feet downstream of Xenon Street N.W. There are no apparent point obstruction to the flow through this ditch system. 8ecommendation: ~ While I will not attempt to recreate the history behind this case which extends to some degree even prior to MrJ Hendriksen's ownership of his property in 1979, I believe the Council is in agreement that the City has expressed a desire to remedy this situation. With Se granting of the exemption by the LRRWMO, I believe we could implement the remedies Proposed by the City in 1989, and recommend the following: !) 2) 4) Lower Mr. Rychly's private drive culvert to an elevation of 868.3 (approximately six inches) Remove 150' high area south of Rychly's private drive Remove filled areas on Welch property south of 153/155. Place culvert to allow Mr. Welch access to highland to the east. Place culvert from wetland into southern end of Lewis pond. Place culvert through berm between Lewis' east and west ponds. Clean out ends of culvert on 157th Lane N.W. [ estimate that the above described work could be performed in winter conditions for approximately $8,000. permission would have to be obtained from three property owners to facilitate this work. I have received verbal consent from two of the three property 6wners. ~have included the study'of the length of Drainage Ditch #3 and this tributary area within the scope of work of the drainage study for the southeastern quarter of the City for which _~e City will shortly receive proposals. I do not anticipate any major drainage projects in ¢is area until the drainage study is completed and consensus with various regulatory ~gencies can be achieved with regard to wetland issues. However, Them is a public interest in controlling the flood potential to 153/155 Avenues and also the properties Surrounding Wetland g656. I, therefore, recommend that individual property owners be approached for the purchase of drainage easements identified in Drainage Plat No. 1 at this time. I would request authorization for Staff to obtain drainage easements at the value of I I I I i I I I I I I I I I I I'