9534

• UCREFRP Catalog Number: 9534
• Author: Mussetter Engineering Inc.
• Title: Findings of the Sediment Monitoring Program Peer Review Panel and Recommended Work Plan.
• USFW Year: 1997.
• USFW - Doc Type: Fort Collins.
• Copyright Material: NO

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. Evaluate the effects of the flows and sediment movement on the morphometric and bed
material characteristics of the Green River by conducting repeat cross-section surveys at
several key points along the system.

3.3 End Products

To document the results of the program on an ongoing basis, an annual report will be prepared
that compiles the sediment and morphometric information and contains an evaluation that can be
used to assist with management decision associated with flow releases from Flaming Gorge Dam,
and other upstream waterdeve'lopment and land use issues. After the first 3 years of the
program, the data and a detailed evaluation of the results should be formally published to insure
that the information is readily available to resource managers, decision makers, and scientists with
an interest in the Yampa and Green River system. A USGS Water-Resource Investigations
Report may be an appropriate forum for such a publication.

3.4 Study Method/Approach

The project objectives will be met by performing suspended-sediment and bed-load
measurements, bed material sampling, and cross-section surveys at several strategically selected
locations along the Yampa and Green River systems. The sampling and survey locations are
described in the following section, and have been selected to take maximum advantage of historic
and ongoing data collection efforts and to provide data at locations that are believed to be
important to the habitat requirements of the endangered fishes. The sediment sampling and
cross-section surveys will be conducted by experienced personnel using standard U.S. Geological
Survey techniques.

3.5 Task Description and Schedule

The following specific tasks well be performed to accomplish the goals and objectives of the
program:

1. An ongoing bed-load and bed-material sampling program will be established at the
Deerlodge Park gage on the Yampa River, to supplementthealready established program
of suspended sediment measurements that is being conducted by the U.S. Geological
Survey, in cooperation with the Recovery Program and Colorado River Water Conservation
District. Nine (9) samples of each parameter will be collected per year.

2. An ongoing suspended-sediment and bed-load measuring program and bed-material
samplil)g program will be established at an appropriate site on the Yampa River between
the Little Snake River confluence and the mouth of Cross Mountain Canyon. These
parameters will also be sampled nine (9) times per year.

3. An ongoing sediment-load measuring program, including both suspended- and bed-load,
and a bed-material sampling program will be re-established at the Jensen gage on the
Green River. Twenty (20) samples of each parameterwill be collected per year.

4. An ongoing suspended-sediment load measuring program will be re-established at the
Green River, Utah, gage on the Green River. This program will consist of 120 observer
(box) suspended sedimentand 9 total cross-section samples per year. Ninety (90) of the
box samples and all 9 of the cross-section samples will be analyzed to determine the

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Mussetter Engineering. Inc.