1400 ‎(2)‎

• UCREFRP Catalog Number: 1400
• Author: Simons, D. B., et al., ed.
• Title: Proceedings
• USFW Year: 1980.
• USFW - Doc Type: Workshop on Downstream River Channel Changes Resulting From Diversions or Reservoir Construction.
• Copyright Material: NO

Severa 1 other important concern s were i dent ifi ed and di scussed b;
the group. These may be summarized as follows.

... "

1. The method of analysis will depend to a large extent on
whether or not the river system is stable, so a historical
perspective is important. Any old maps, aerial photos,
geological maps, or historical reports would be useful.

2. There is a potential in the basin for drastic land-use changes
in connection with coal mining and other energy related
industries. These could have appreciable impact on the flow
and sediment discharge of the Little Snake River, so they-need
to be considered.

3. Channel configuration downstream of reservoirs is influenced
in many circumstances by the encroachment of vegetation. Not
much is known about this; it is an area in which additional
research is needed.

4. The sites should be inspected by aerial reconnaissance and on
the ground.

SUMMARY AND CONCLUSIONS

In summary, the participants of the workshop presented a variety of
approaches, from qualitative geomorphic assessments to quantitative
calculations. A number of important concerns were raised during the
group's discussion; most of these revolved around the need for
additional data. There was general agreement on the following three
major poi nts.

1. The question of whether or not future flows would be able to
transport the sediment deli vered by the Li tt 1 e Snake Ri ver is
critical to the analysis.

2. To answer this question, some computations of the hydraulics
and the sediment transport..~ilJ bave to be carried out.

::---:__'::'-~-

3. Additional field data are needed to provide a basis for
reliable computations, and in fact, additional data are needed
even for a qualitative assessment of the impacts of reservoir
construction on the system.

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