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t- <br />CITY <rf ORONO <br />*. . ••Post Office Box 66•Crystal Bay, Minnesota 55323*Municipal Offices <br />On the North Shore of Lake Minnetonka <br />• ' 4 « A. <br />May 29, 1984 <br />n <br />Q <br />V <br />Mr. John Dugan <br />2785 White Oak Circle <br />Long Lake, Minnesota 55356 <br />Re; Drainage Problem <br />Dear Mr. Dugan: <br />I reviewed your drainage situation with Glenn Cook, City Engineer, <br />and John Gerhardson, Public Works Coordinator. Mr. Gerhardson <br />informed me that the grading work done at 425 South Old Crystal Bay <br />Road had been maintenance of the existing drainageway and did not <br />require a permit. Our 1971 file air photos indicate the area was <br />not a retention basin then, which bears out the fact that this is <br />an historic drainageway. Mr Cook indicated that in his opinion, <br />the grading in itself, would likely not have the effect of signifi <br />cantly increasing the volume or velocity of flow through the culvert <br />onto your property. <br />A topographic investigation of the watershed draining through your <br />property indicates it is roughly 17 acres in area. The relatively <br />steep slopes and clayey soils throughout this area would tend to <br />create a naturally speedy runoff. <br />Both Glenn and John were of the opinion, and I concur, that the <br />ponding effect you are getting is most likely a result of the "trapped" <br />basin behind your house. The water level has to raise to a certain <br />level before it overflows across into Marier's property and to the <br />southeast. There may be an old agricultural drain tile in this low <br />spot that has plugged up or broken, which could also be slowing the <br />drainage. We know there was a 12" diameter (approximately) draintile <br />found during construction of the home at the end of White Oak Circle. <br />A tile system may indeed extend into your property. Air photos show <br />this property has been under cultivation previously. <br />I am afraid I do not have a quick and easy solution for your ponding <br />problem. You might consider creating a swale across the hump between <br />your property and Marier's so that water does not stand in your back <br />yard. I do not know what effect this might have on Marier's property <br />BUILDINC & ZONINi; - 473 7357 <br />ASSESSING <br />ADMINISTRATION A HNANCT. - 473 7358 Pl’BLIC WORKS - 473-73S9 <br />} <br />t