FLOOD03394

• Designation Number: 505
• County: Jefferson
• Community: Unincorporated Jefferson County
• Basin: South Platte
• Title: Flood Insurance Study - Jefferson County, CO, Unincorporated Areas
• Date: 4/1/1989
• Designation Date: 9/1/1999
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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INTRODUCTION

This flood plain management report was prepared by the u.s.
Department of Agriculture, Natural Resources Conservation Service,
in cooperation with the Colorado Water Conservation Board and Mesa
County, Colorado. Interpretations of the flood plain management
study and recommendations to reduce damages are included; however,
it is beyond the scope of this report to provide detailed proposals
or plans to rectify the flooding problems.

A. Objectives
The objective of this study is to provide detailed flood plain
management information and mapping to the Mesa County and
Unincorporated Clifton for use in implementing flood plain
management programs which will minimize potential flood damages.
Included in the report are engineering and hydrologic data which
will facilitate the development of a flood plain management plan,
road and bridge designs, and flood control measures.

B. Authority
Section 37-60-106(1), Colorado Revised Statutes, authorizes the
Colorado Water Conservation Board liTo designate and approve storm
or floodwater runoff channels or basins, and to make such
designations available to legislative bodies of cities and
incorporated towns, to county planning commissions, and to boards
of adjustment of cities, incorporated towns, and counties of this
state. II The Board provides assistance to local governments in the
development and adoption of effective flood plain ordinances. In
addition, the Board will provide technical assistance to local
entities during the performance of flood plain information studies
within Colorado. Presently, direct financial assistance for the
performance of floodplain studies is no longer available from the
Board.

Section 30-28-111 C.R.S. for county governments and Section 1-23-3-
1 C.R.S. for municipal governments of the Colorado Revised Statutes
state the cities, incorporated towns, and counties within the study
area may provide zoning regulations "... To establish, regulate,
restrict, and limit such uses on or along any storm or floodwater
runoff channel or basin that has been designated and approved by
the Colorado Water Conservation Board, in order to lessen or avoid
the hazards to persons and damage to property resulting from the
accumulation of storm or floodwaters II

Therefore, upon official approval of this report by the Colorado
Water Conservation Board, the areas described as being inundated by
the 100-year flood can be designated as flood hazard areas and
their use regulated accordingly by the local governments.

Flood plain management studies are carried out by the Natural
Resources Conservation Service as an outgrowth of the
recommendations in A Report hy the TaRk For~e on Feoeral Flooo
Cont.rol Poli~y, House Document No. 465 (89th Congress, August 10,