FLOOD00868

• Designation Number: 523
• County: Mesa
• Community: Clifton
• Title: Resolution - FPR 00-523 - Floodplain Management Study - Douglas Wash at Clifton, Colorado
• Date: 7/1/2000
• Designation Date: 7/1/2000
• Prepared By: CWCB
• Floodplain - Doc Type: Resolution

WHEREAS, Mesa County and the Natural Resources Conservation Service have requested the
Colorado Water Conservation Board to designate and approve the detailed floodplain information as set
forth in said new report dated July 2000; and

CR.S. AUTHORITY

WHEREAS, Section 37-60-106(1)(c), Colorado Revised Statutes, requires the Colorado Water
Conservation Board to assist in the prevention of floods and flood damages therefrom; and

WHEREAS, Sections 31-23-301 and 30-28-111, Colorado Revised Statutes, provide that
legislative bodies of local jurisdictions may provide zoning regulations for land uses on or along any
storm or floodwater runoff channel or basin only after designation and approval by the Colorado Water
Conservation Board; and

WHEREAS, Section 37-60-106(1)(c), Colorado Revised Statutes, directs the Colorado Water
Conservation Board to designate and approve storm or floodwater runoff channels or basins and to
make such designations available to legislative bodies oflocal jurisdictions; and

COMPLIANCE WITH CWCB TECHNICAL STANDARDS

WHEREAS, the floodplain information in said new report dated July 2000 meets all of the
requirements, based on a cursory review by the CWCB staff and a more detailed review by Natural
Resources Conservation Service and Mesa County, for detailed information listed under the Board's
"Rules and Regulations for the Designation and Approval of Floodplains and of Storm or Floodwater
Runoff Channels in Colorado" (2 CCR 408-1); and

WHEREAS, flood frequency peak discharges were computed using the TR-20 (NRCS) and
HEC-2 (Corps of Engineers) computer models using the NRCS 24-hour type II rainfall distribution; and

WHEREAS, there is no existing floodplain information for Douglas Wash depicted on the
FEMA regulatory floodplain mapping (community-panel #080115 0480 C) and the study areas are
currently shown as unshaded Zone X;

DESIGNATION AND APPROVAL ACTION

NOW, THEREFORE, BE IT RESOLVED by the Colorado Water Conservation Board in
regular meeting assembled in Gunnison, Colorado, this 24th day of July 2000, that it does hereby
designate and approve as detailed floodplain information the lOO-year floodplains for East Douglas
Wash and West Douglas Wash as described by the floodplain delineations and floodwater surface
elevations in said new report dated July 2000; and

BE IT FUR THER RESOLVED that the Secretary of the Board is directed to send a certified
copy of this resolution to Mesa County and the Federal Emergency Management Agency Region 8.

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