A method for characterizing late-season low-flow regime in the upper Grand Ronde River Basin, Oregon
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- Document: Report (12 MB pdf)
- Appendix: Appendixes A-F (75 KB xlsx)
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Abstract
This report describes a method for estimating ecologically relevant low-flow metrics that quantify late‑season streamflow regime for ungaged sites in the upper Grande Ronde River Basin, Oregon. The analysis presented here focuses on sites sampled by the Columbia River Inter‑Tribal Fish Commission as part of their efforts to monitor habitat restoration to benefit spring Chinook salmon recovery in the basin. Streamflow data were provided by the U.S. Geological Survey and the Oregon Water Resources Department. Specific guidance was provided for selection of streamgages, development of probabilistic frequency distributions for annual 7-day low-flow events, and regionalization of the frequency curves based on multivariate analysis of watershed characteristics. Evaluation of the uncertainty associated with the various components of this protocol indicates that the results are reliable for the intended purpose of hydrologic classification to support ecological analysis of factors contributing to juvenile salmon success. They should not be considered suitable for more standard water-resource evaluations that require greater precision, especially those focused on management and forecasting of extreme low-flow conditions.
Suggested Citation
Kelly, V.J., and White, Seth, 2016, A method for characterizing late-season low-flow regime in the upper Grand Ronde River Basin, Oregon: U.S. Geological Survey Scientific Investigations Report 2016–5041, 41 p., http://dx.doi.org/10.3133/sir20165041.
ISSN: 2328-0328 (online)
Study Area
Table of Contents
- Abstract
- Introduction
- Approach
- Data Assembly
- Characterization of Late-Season Low‑Flow Regime
- Quantifying Uncertainty
- Reliability and Limitations
- Summary and Conclusions
- References Cited
- Appendixes A-F
Publication type | Report |
---|---|
Publication Subtype | USGS Numbered Series |
Title | A method for characterizing late-season low-flow regime in the upper Grand Ronde River Basin, Oregon |
Series title | Scientific Investigations Report |
Series number | 2016-5041 |
DOI | 10.3133/sir20165041 |
Year Published | 2016 |
Language | English |
Publisher | U.S. Geological Survey |
Publisher location | Reston VA |
Contributing office(s) | Oregon Water Science Center |
Description | Report: vi, 41 p.; Appendixes A-F |
Country | United States |
State | Oregon |
Other Geospatial | Grande Ronde River |
Online Only (Y/N) | Y |
Additional Online Files (Y/N) | Y |
Google Analytic Metrics | Metrics page |