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<br />, Federal Emergency Management Agency
<br />Washington, D.C. 20472
<br />
<br />CERTIFIED MAIL
<br />RETURN RECEIPT REQUESTED
<br />
<br />IN REPLY REFER TO:
<br />Case No,:~.08.241P
<br />
<br />The Honorable Ronald K, Stewart
<br />Chairperson, Boulder County
<br />Board of Commissioners
<br />P,O, Box 471
<br />Boulder, Colorado 80306 .
<br />
<br />Community: Boulder County, Colorado
<br />Community No,: 080023
<br />Panel Affected: 08013C04l5 F
<br />Effective Date of
<br />This Revision: NO VOl 1995
<br />
<br />102-D-A
<br />
<br />Dear Mr, Stewart:
<br />
<br />This is in response to a request for a revision to the effective Flood Insurance Study (FIS) and National
<br />Flood Insurance Program (NFIP) map for your community, Specifically, this responds to a letter dated
<br />October 5, 1995, from Mr, Curt Parker, P,E" Water Resources Engineer, Transportation Department,
<br />Boulder County, regarding the effective FIS report and Flood Insurance Rate Map (FIRM) for Boulder
<br />County, Colorado and Incorporated Areas. With his letter, Mr, Parker provided additional data to
<br />support a July 27, 1995, request from Mr. Roger L. Mieden, P.E., Drexel Barrell, that the Federal
<br />Emergency Management Agency (FEMA) revise the effective FIRM to correct an error in the placement
<br />of an elevation of a flood having a I-percent chance of being equaled or exceeded in any given year (base
<br />flood) along Dry Creek No, 2 Ditch Split Flow just upstream of the Burlington Northern Railroad,
<br />
<br />All data required to complete our review of this request were submitted with Mr, Mieden' s July 27 letter ,
<br />Mr, Parker's October 5 letter, and a letter dated September 20, 1995, from Ms, Karen S, Medde, P,E.,
<br />Department of Public Works, City of Boulder, Because this Letter of Map Revision (LOMR) corrects
<br />a mapping error, fees were not assessed for the review.
<br />
<br />We have completed our review of the submitted data and the flood data shown on the effective FIRM and
<br />have revised the FIRM to modify the base flood elevation (BFE) along Dry Creek No, 2 Ditch Split Flow
<br />from just upstream to approximately 600 feet upstream of the Burlington Northern Railroad,
<br />
<br />As a result of this revision, the BFE shown on the FIRM just upstream of the Burlington Northern
<br />Railroad along Dry Creek No, 2 Ditch Split Flow was corrected from 5,222 feet to 5,220 feet. The
<br />revised BFE reflects the results of the effective hydraulic analysis, The 5,222-foot BFE, incorrectly
<br />shown at the railroad on the effective FIRM, was moved approximately 60v feet upstream, In addition,
<br />the elevation on Profile Panel 116P for Dry Creek was corrected at the Burlington Northern Railroad
<br />from 5,221 feet to 5,220 feet.
<br />
<br />The modification is shown on the enclosed annotated copy of FIRM Panel 08013C0415 F and Profile
<br />Panel 116P for Dry Creek, This LOMR hereby revises this panel of the effective FIRM and the Flood
<br />Profile in the FIS report, both dated June 2, 1995,
<br />
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