FLOOD03761

• County: Statewide
• Basin: Statewide
• Title: Guidelines for Determining 100-Year Flood Flows for Approximate Floodplains
• Date: 5/12/1995
• Prepared By: CWCB
• Floodplain - Doc Type: Project

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Colorado Water Conservation Board
Department of Natural Resources

STATE OF COLORADO

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721 State Centennial Building
1313 Shennan Stree~
Denver. Colorado 80203
PhoDe [phone]
FAX [phone]

Roy Romer
Govemor

James S. Lochhead
Executive Director, DNR

MEMORANDUM

Danes C. lile. P.E
Dire<:lor, eweB

TO:

Colorado Water Conservation Board Members

FROM:

Larry Lang

DATE:

May 12, 1995

SUBJECT: Agenda Item 4b, May 22-23, 1995, Board Meeting --
45-Day Notice for the Designation and Approval of Approximate Floodplain
Information contained in the report entitled "Floodplain Information Report,
Volumes I, II, III and IV, for the Yampa, White, Gunnison and Colorado mainstem
Rivers", dated March, 1995.

INTRODUCTION

Agenda Item 4b includes all 4 volumes of an approximate floodplain study
proposed for designation and approval by the CWCR The study was prepared by CWCB staff
with funding from the U.S. Bureau of Reclamation as part of the Recovery Implementation
Program for Endangered Fish Species in the Upper Colorado River Basin. AIthollgh the study
was conducted to assist public and private entities involved in the management of native and non-
native fish in the Upper Colorado River Basin, the approximate floodplain information can be
used for other purposes more directly related to floodplain management. It will be presented to
the Board at the July 1995 meeting for designation and approval as approximate floodplain
information. The Board staff plans to request Board designation and approval under the
provisions of Rule 9.D.2, "Consideration at the Board's Initiative".

DISCUSSION

The U.S. Fish and Wildlife Service defined critical habitat for four species of
endangered fish on the mainstem of the Colorado River in Colorado and on three of its tributaries
in Colorado as follows:

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