FLOOD05230

• Designation Number: 413
• County: Custer
• Community: Westcliffe
• Basin: Arkansas
• Title: Floodplain Information Report - Flood Hazard Boundary Map - Westcliffe, Colorado
• Date: 2/1/1996
• Designation Date: 3/1/1996
• Floodplain - Doc Type: Correspondence

WHEREAS, Westcliffe, Colorado, has requested the Colorado Water Conservation Board
to designate and approve the floodplains set forth in the aforesaid new report; and

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 of local jurisdictions; and

WHEREAS, the information in said new report for Grape Creek and Mill Gulch meets
all of the requirements for approximate floodplain 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);

WHEREAS, the Colorado Water Conservation Board has determined that the hydrologic
methodology developed in the Guidelines for Determining IOO-Year Flood Flows for
Approximate Floodplains is appropriate for designation and approval of approximate floodplain
information and for use in simple floodplain analyses for development such as open space,
agriculture, farm bridges, barns and individual residential structures, but that the methodology is
not appropriate for development involving residential subdivisions greater than 50 lots or
occurring on sites greater than 5 acres, commercial construction, industrial construction,
construction of public transportation facilities or construction of flood control facilities; and

NOW, THEREFORE, BE IT RESOLVED by the Colorado Water Conservation Board in
regular meeting assembled in Denver, Colorado, this 13th day of March, 1996, that it does hereby
designate and approve as storm or floodwater runoff channels or basins those areas described by
approximate floodplain information in said new report, dated February 8, 1996, including the
floodplain map dated August 13, 1976 which was incorporated into said new report, for Grape
Creek and Mill Gulch within the corporate limits of the Town of Westcliffe as of August 13,
1976, which meets the criteria for the regression equation for Arkansas River Basin Subregion
Ark-6, QlOO= 45.98 * Ao.717 as set forth in the Guidelinesfor Determining IOO-Year Flood Flows
for Approxi1lU1Je Floodplains, contingent upon the understanding that the Town of West cliffe will
regulate the storm and floodwater runoff channels (approximate floodplains) on a case-by-case
basis subject to a detailed hydrologic and hydraulic analysis performed by a professional engineer,
in accordance with the determinations of the Colorado Water Conservation Board regarding the
applicability of the Guidelines for Determining IOO-Year Flood Flows for Approxi1lU1Je
Floodplains; and

2