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<br />. , <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br /> <br />Mr. Bill DeGroot <br />Page 2 <br />March 30, 1977 <br /> <br />In response to your comments about the effects of the reservoirs <br />located in the upper portion of the Brantner Gulch drainage <br />basin, we are herewith submitting our calculations showing <br />that these reservoirs do detain the 100-year runoff, under <br />existing conditions. We made contact with the State Engineer's <br />office and the Eastlake Ditch Company to determine if any <br />information is available on these lakes. No detailed engineering <br />information is on file with either one of these organizations. <br />We had made a detailed field investigation of these lakes and <br />talked to representatives of the Ditch Company to determine <br />whether the information shown on the attached calculation <br />sheets is valid. Our conversations with the representatives <br />have verified that the information shown on the attached <br />calculation sheets is valid. We do agree that should these <br />lakes be eliminated or breached, there would be a change in <br />the discharge and the flood plain maps. <br /> <br />I trust this information will be sufficient to eleviate your <br />concerns as expressed in your March 11, 1977 letter. If <br />there are any questions, please do not hesitate to call. <br /> <br />Very truly yours, <br /> <br />GINGERY ASSOCIATES, INC. <br /> <br />a"';2<At/y >~- <br /> <br />Thomas J. Stone <br /> <br />TJS/kd <br /> <br />Attachment <br /> <br />cc: Mr. Wayne Graham, wlo enc. <br />Mr. Gene Jencsok, wlo enc.~ <br />