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<br />.. <br /> <br /> <br /> <br /> <br />CERTIFIED MAIL <br />RETURN RECEIPT REQUESTED <br /> <br /> <br />ashington, D.C. <br /> <br /> <br />IN REPLY REFER TO: <br />Case No.: '~4~0~~144P' <br /> <br />Ms. M. Michael Cooke <br />Chairperson, Douglas County <br />Board of Commissioners <br />101 Third Street <br />Castle Rock, Colorado 80104 <br /> <br />Community: Douglas County, <br />Colorado <br />Community No.: 080049 <br />Panel Affected: 0070 D <br />Effective Date of <br />This Revision: <br /> <br />AUG 291994 <br /> <br />102-I-A <br /> <br />Dear Ms. Cooke: <br /> <br />This is in response to a request for a revision to the effective Flood <br />Insurance Study (FIS) and National Flood Insurance Program (NFIP) map for <br />your community. Specifically, this responds to a transmittal dated June 23, <br />1994, from Mr. Thomas A. Gardner, P.E., Project Manager, EM!{ Consultants, <br />Inc., regarding the effective FIS report and Flood Insurance Rate Map (FIRM) <br />for Douglas County, Colorado. Mr. Gardner requested that we revise the <br />effective FIRM to show the effects of the construction of the Jordan Road <br />Tributary diversion channel, two 4-foot by 9-foot box culverts along Jordan <br />Road Tributary, and updated existing conditions along Newlin Gulch. <br /> <br />All data required to complete our review of this request were submitted with <br />Mr. Gardner's June 23 transmittal and with his July 15, 1994, letter. In <br />addition, Mr. Richard N. Wray, P.E., Principal, Kiowa Engineering <br />Corporation, submitted data with his letter dated August 11, 1994. All fees <br />necessary to process this Letter of Map Revision (LOMR), a total of $2,610, <br />have been received. <br /> <br />We have completed our review of-the submitted data and the flood data shown <br />on the effective FIRM, and have revised the FIRM to modify the floodplain <br />boundary delineations of a flood having a l-percent probability of being <br />equaled or exceeded in any given year (base flood) along Jordan Road <br />Tributary from its confluence with Newlin Gulch to approximately 700 feet <br />upstream of Stonegate Parkway. The construction of the diversion channel <br />will shift the confluence of Jordan Road Tributary with Newlin Gulch <br />approximately 5,500 feet upstream of its present location. The 100-year <br />flood discharge is contained within the diversion channel along Jordan Road <br />Tributary. The Special Flood Hazard Area (SFHA) has increased upstream of <br />Jordan Road because of the redirection of flow created by the diversion <br />channel. The SFHA for Jordan Road Tributary downstream of Jordan Road has <br />been eliminated because of the diversion channel. Note that the Town of <br />Parker, Colorado, is affected by this reduction of SFHA from 3,200 feet <br />upstream of its confluence with Newlin Gulch to approximately 3,400 feet <br />