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

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prepared by experts in the area of river response and physical channel
~hanges that result from man's activity.

Complexities and differing procedures involved in analyzing river
response to works of man are often beyond the typical professional's
expertise to assimilate into a usable form. This task is particularly
difficult if the professional needing the information is not trained in
the discipline that supports solutions. This is the situation, for
example, when aquatic biologists investigating habitat dynamics require
techniques for estimating channel changes caused by altered hydrologic
and hydraulic processes. The workshop project was designed to prOVide
1nformation to the Water Resources Analysis Project (WRAP) from a large
group of experts through a set of workshop proceedings.

WO~KSHOP PHASE

River systems selected for analysis and discussion were Poplar
Creek, a gravel and cobble stream in California, the Yampa River in
Colorado, and the Elk River in Eastern Kansas. Participants were
divided into three groups and requested to assess the importance of
hypothet i ca 1 development on one of the three ri ver systems. After
receipt of a data package containing information that might typically
resu 1t from an in it i a 1 reconna is sance and 1 itera ture sea rch, part i c i-
pants were requested to:

- Consider response of the river system to hypothetical development
and alteration

- Present concepts, methods, and other aspects in a general way
that you utilize and recommend for analysis of such channel.
problems

- Submit a paper including results of your analysis

Participants assembled at Colorado State University, Fort Collins,
Colorado on 27 August, 1980 for the first of 3 days of workshop
meetings. The first half day was devoted to an introduction by D. B.
Simons and general discussion of workshop objectives and organization.
C. B. Stalnaker provided a review of ecological and biological concerns
in relation to instream habitat. R. T. Milhous supplemented the data
provided to participants with a photographic reconnaissance of all three
river study areas.

The next 3 half-day periods were devoted to presentation of papers
by each of the participants for the Yampa River problem, Poplar Creek,
and Elk River, respectively. A monitor for each group (K. Bovee--Yampa
River, R. T. Milhous--Poplar Creek, and C. Thorne--Elk River) was
responsible for the time schedule and organization of the presentations.
During the final day the three groups met, separately, to discuss the
results of the analysis of their particular problem area. A reporter
for each group (C. Nordin--Yampa River, S. Schumm--Poplar Creek, and F.
Theurer--Elk River) was assigned to insure that unanswered questions
were addressed and to mediate unresolved issues. The reporter was

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