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<br />SF-00006-01 <br /> <br />'"I," _1-'" <br />r,__ · ,'d'" <br /> <br />" ~_ "... t ',' <br /> <br />_ jESOTA <br />Office" Memorandum <br /> <br />DEPARTMENT Natural Resources <br /> <br />TO <br /> <br />FROM <br /> <br />SUBJECT: <br /> <br />~ <br /> <br />i <br />j.. <br /> <br />_...~ ,. <br /> <br />DATE: December 17, 1980 <br /> <br />Kent Lokkesmoe <br />Regional Hydrologist <br /> <br />Ken Reed, ~~r <br />Hydrographic Unit <br /> <br />PHONE: <br /> <br />4806 <br /> <br />OWASSO LAKE - RAMSEY COUNTY <br /> <br />Pursuant to our telephone conversation pertaining to the Ordinary <br />High Water level for Qwasso Lake the following information from <br />our lake file is offered: <br /> <br />controlling elevation; crest of weir = <br />"Normal elevation"; Ramsey County = <br />OHW; A..F.. Meyer 1923 = <br />Average of maximum readings, 1924-1972 = <br />Average of minimum readings, 1924-1972 = <br />Average of medium readings, 1924~1972 - <br />Landside edge of cattails; D.O.W.. 10/12/77 = <br /> <br />886.6* <br />886..6 <br />887.. 8+ <br />886..3 <br />885..4 <br />886..0 <br />886..5 <br /> <br />Further efforts to document an Ordinary High Water level ,for Owasso <br />Lake WQu1d not be useful and no further investigations will be <br />conducted. This comment is made in light of the fact that in <br />approximately seven out of ten years pumping takes place on Qwasso <br />Lake and consequently lake levels are not fluctuating through a <br />"normal" range of levels.. <br /> <br />The datum for the O..H..W. by A..F. Meyer has not been determined, <br />however, it probably originated for a 12/13/60, memo by S..A. Fre11son. <br />At any rate it is too high and'should not be used.. The estimated <br />0.. H.. W.. of 885..6 contained in J.M. Scherek 10/18/77 work report is <br />too low and .is based on limited field evidence.. <br /> <br /> <br />- ..._- ---:.. ~--""""="' -..~. '-~~~ <br /> <br />~:---. <br /> <br />*A11 referenced elevations are in N..G..V..D. 192J; add 0..43 for MSLD 1912.. <br /> <br />----.J <br /> <br />KDR/t <br />