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Wadeable Streams Assessment (WSA) Background Materials
The Wadeable Streams Assessment: A Collaborative Survey of the Nation's Streams
(WSA) is a first-ever statistically-valid study of the biological condition of small streams throughout the U.S. It
establishes a national baseline we can use to compare to results from future studies. This information will help us
evaluate the successes of our national efforts to protect and restore water quality.
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Fact Sheets
- The Wadeable Streams Assessment: A Collaborative Survey of the Nation's Streams (fact sheet) (PDF, 2 pages, 615KB)
- Process to Examine Comparability of Biological Methods (technical fact sheet) (PDF, 2 pages, 403KB)
- Probability-based Design for Selecting Sampling Sites (technical fact sheet) (PDF, 2 pages, 517KB)
- Measuring Physical Habitat in Streams (technical fact sheet) (PDF, 2 pages, 405KB)
- Developing a Data Analysis Plan for the Wadeable Streams Assessment (technical fact sheet) (PDF, 2 pages, 1MB)
Field Methods
- Full Document (PDF, 14.4MB, 191 pages)
- Cover, Table of Contents, Foreword (PDF, 299KB, 14 pages)
- 1.0 Introduction (PDF, 233KB, 6 pages)
- 2.0 Overview of Field Operations (PDF, 175KB, 12 pages)
- 3.0 Base Location Activities (PDF, 323KB, 16 pages)
- 4.0 Initial Site Procedures (PDF, 459KB, 14 pages)
- 5.0 Water Chemistry (PDF, 297KB, 8 pages)
- 6.0 Stream Discharge (PDF, 1.4MB, 10 pages)
- 7.0 Physical Habitat Characterization (PDF, 7.2MB, 46 pages)
- 8.0 Benthic Macroinvertebrates (PDF, 2.4MB, 12 pages)
- 9.0 Rapid Habitat and Visual Stream Assessments (PDF, 1.2MB, 18 pages)
- 10.0 Final Activities (PDF, 35KB, 1 page)
- 11.0 Citations (PDF, 53KB, 5 pages)
- Appendices (PDF, 1.1MB, 29 pages)
Quality Assurance
Site Evaluation
Laboratory Methods
Other Background Material
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