Laserfiche WebLink
<br />JHN-01-1900 00:17 <br /> <br /> <br />('If. <br /> <br />Howard R, Green Company <br />CONSULTING ENGINEERS <br /> <br />July 6, 2000 <br />File: S06260J-0325 <br /> <br />Mr. Gerald Rehbein <br />R & R leaalng <br />PO Box 324 <br />Hugo, Mn 55038 <br /> <br />RE: CLEARWATER CREEK ANALYSIS <br /> <br />Dear Mr. Rehbein: <br /> <br />In my telephone conversation with Mr. Derek Knapp of Montgomery Watson on July a. <br />2000, it was determined that the 100-year flow for the section of CleBrwater Creek. from <br />20th Avenue upstream to '-35 is 877.5 cfs. Thhi flow remains close to the original flow <br />used in our analysis. However, the i OO-year flow downstream of 20M Avenue Increases <br />significantly to 1,066.7 cfs, Mr. Knapp ir.formed me that these flows should not change <br />in the future. <br /> <br />Based on the new flows from Montgomery Watson, re-evaluation of the 100-year <br />floodplain and ftoodway boundaries \"1m moet likely make the flooding situation worse <br />downstream of 20th Avenue. Upstream of 20th Avenue, the development of the floodway. <br />based on the criteria for floodwilY width we discussed, appears feasible. T:,e new flow <br />wiil require re--evaluation of the creek along its entire length from its outfall to Peltier <br />Lake L,;pstre8m to '-35. <br /> <br />Also. rather than the width we had established in our earlier meetIngs, the establishment <br />of the floodway (generally a ol"&-foot rise) may need to be set by the community <br />Administrator overseeing the Flood Insurance Rate Map for this area. I will contact the <br />appropriate person and get an answer as soon as possible. <br /> <br />Our next step should be to sohedule a meeting and discuss What options are available at <br />this point. <br /> <br />Sincerely, <br />Howard R. Green Company <br />O.?N~~ <br /> <br />De:lnls Jermeland, P.E. <br />Project Manager <br /> <br />cc: Mr. Jim March - City of Centervme <br />Ms. Kate Drewry - Rice Creek Watershed District <br /> <br />L tr-C70600-Rahbeln.lioc <br /> <br />1328 Energy Park Dr.ve . St. Paui. MN 55108 . 651/644-4389 fax 651/6#9446 toll free e8a/:)ee~;!e9 <br /> <br />- <br />F.02/02 <br /> <br />TOTAL P.02 <br />