9615

• UCREFRP Catalog Number: 9615
• Author: Miller, W. J., D. E. Rees and J. A. Ptacek.
• Title: Draft Summary of 2001 Tasks Fryingpan/Roaring Fork Rivers Fishery Study.
• USFW Year: 2001.
• USFW - Doc Type: Fort Collins, CO.
• Copyright Material: NO

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is mainly controlled by snowmelt runoff from high elevations and the hydrograph is
typical of snowmelt controlled systems. Peak flows occur in early summer, mid-flows in
late summer, and base flows throughout the late fall and winter. Four study sites were
selected for the fishery study, three on the Fryingpan River and one on the Roaring Fork
River.
2001 Study Tasks
Several tasks were developed during the study design. The tasks started in 2001
included:
• Literature review
• Instream flow study using the Instream Flow Incremental Methodology
(IFIM)

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• Evaluation of additional aquatic ecosystem components that affect fish habitat
and fish populations.
This approach follows a logical sequence of literature review, data collection and analysis
that will provide a sound foundation to evaluate the impacts of current and future
operating conditions of Ruedi Reservoir on resident trout populations.
Each of the above tasks requires specific methods. The following sections provide the
detailed methods for each task and a summary of the work completed in 2001. The data
reported here is subject to revision during the completion of the study.
Literature Review
The objective of this task was to compile and review the existing hydrology, fishery and
instream flow information for the study area on the Fryingpan and Roaring Fork rivers as
collected by the Colorado Division of Wildlife, Bureau of Reclamation and others.
Draft 2001 Task Summary Report Page 2
Miller Ecological Consultants, Inc. December 18, 2001