USGS

Influence of Natural Factors on the Quality of Midwestern Streams and Rivers

U.S. Geological Survey Water Resources Investigations Report 00-4288

by Stephen D. Porter, Mitchell A. Harris, and Stephen J. Kalkhoff

Report availability: Web (HTML) and Portable Document Format (PDF).

Complete report (set of HTML files) The HTML version of the report can be viewed in your web browser.
Complete report (PDF file) The PDF version of the report displays high-resolution, printable pages.
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