WSP01948

• File Number: 8240.200.10.B
• Description: UCRBRIP Annual Report
• Basin: Colorado Mainstem
• Date: 4/9/2003
• Author: UCRBRIP
• Title: 2002 Annual Reports Package Part 2
• Water Supply Pro - Doc Type: Publication

COLORADO RIVER RECOVERY PROGRAM
FY 2002 ANNUAL PROJECT REPORT

RECOVERY PROGRAM
PROJECT NUMBER: C-6 HYD

I. Project Title:

Hydrographic data collection - FY 2002 site surveys, floodability assessments, design
and engineering for habitat restoration along the Green River in Utah, the Colorado River
in Colorado, and the Gunnison River in Colorado.

11. Principal Investigator(s):

Peggy M. Bailey, P.E.
Tetra Tech, Inc.
410 South French Street
Breckenridge, CO 80424
[phone]
[phone] FAX
peggy .bai [e-mail]

III. Project Summary:

The objectives of this work are:

I. To determine bankfull flood flows, with and without excavation;

2. To determine area of inundation as a function of flow, with and without
excavation;

3. To compare historical versus existing frequency, duration, and timing of flood
flows, with and without excavation;

4. To characterize pre-restoration baseline channel and site morphology, and post-
restoration morphology; and

5. To develop design options for enhancing floodability and to assist with
construction oversight.

A site owned by the Colorado Department of Transportation was surveyed in FY 2002.
The reconnaissance survey, data collection and preparatory work for hydrologic analyses were
completed. Topographic mapping and floodabijity analyses were initiated, and continue to be
developed in FY 2003.

Hydrographic surveys and floodability analyses were performed at Thunder Ranch,
formerly known as Escalante Ranch. Topographic data collected in FY 2002 were utilized to
update the site plan.

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