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' • Page 5 <br /> a�:��, R�, ���� � �4��;�;.�, �,�. ea�� �.�►.� <br /> 2335 ?�!/. `1��s�r�(i �l��lsu.asj 36 O�to G. Bonunoo,P.E. Lawrenct F. Frfdrfen, P.E. <br /> Ro6erl W. Rosent, P.E. Clenrt R. Cook, P.E. <br /> n� n�f�j �� �SJ�'fs Josrph C. Andrrllk, P.E. Re(rh A. Cordon, P.E. <br /> � Brcdlord A. Lcmbers, P.E. Tho/na.r E. Noyes, P.E. <br /> . .l(3K� 636-k600 Robcrf D.Frlgaard, P.E. Rtchard W. Forter, P.E. <br /> Rlchard E. Turner, P.E. Robc�f G. Schunlckt, P.E. <br /> lamei C. Olson, P.E. Marvin L. Sorvafa, P.E, <br /> Donald C. Burgardf, P.E. <br /> February 2� 197H Xtnnclh R.Mttrte�, P.F. <br /> Charler A. Erlckaon <br /> Mr. Ha nk Muh i ch z�o M. Pawe/skr <br /> Xarlan M. Olson <br /> Zoning Administrator <br /> City of Orono <br /> Box 66 <br /> Crystal Bay, Mn. 55323 <br /> Re: Mr. James McCleary <br /> Building elevation relative to Flood Plain Zoning <br /> Our File No. 139 <br /> Dear Mr. Munich: - <br /> ^1 <br /> We have reviewed the topographic survey submitted by Mr. McCleary which indicates <br /> the general location of a proposed building to be constructed on his property <br /> adjacent to Co. Rd. 84 at the north end of Stubbs Bay. The survey indicates <br /> that the elevation of the property ranges from 930 near the shore line to 934 at <br /> the extreme southeast corner. The elevation at the proposed building location <br /> ranges from approximately 931.5 to approximately 932.5 according to the survey. <br /> Mr. John Holmquist of Hickok and Associates indicated to us that the elevation <br /> of the projected 100 year regional flood on Lake Minnetonka is 931.5 as estab- <br /> lished by the Minnehaha Creek Watershed District. The District further recou�ends <br /> that the lowest occupied floor level be set not lower than 3 feet above the <br /> regional flood level. <br /> Mr. Len Krammer of Barr Engineering indicated to us that the 100 year flood level <br /> for Lake Mianetonka is 930.9, established by the flood insurance studies their <br /> firm completed for Federal Government. Mr. Kra�ner reco�ended a minimum of <br /> 1 foot above the 100 year flood elevation for the lowest occupied level as indi- <br /> cated by State law. <br /> The Barr elevation of 930.9 is apparently based on a historical statistical <br /> analysis of rainfall within the existing Lake Minnetonka basin, while the Hickok <br /> elevation of 931.5 appears to be a maximum District �ater management elevation. <br /> We recommend that the lowest occupied level of the building proposed by Mr. <br /> McCleary be set not lower than 932.5, or one foot above the Minnehaha Creek Water- <br /> shed District max imum water management elevation. <br /> It does not appear that the level of Lake Minnetonka is subject to r,apid and wide <br /> fluctuation in water elevation and the one foot safety factor, in our opinion, is <br /> adequate for the 100 year flood occurrence. We are unfamiliar with any of the <br /> details of the pending flood plain zoning regulations relative to Lake Minnetonka <br /> and therefore cannot comment on them at this time. <br /> You�very tru -; <br /> "' ONE 00, 0 , ANDERLIK & ASSOCIATES, INC. � <br /> Jg //c��- � !��� <br /> /Jco:i� <br /> l <br />