By Alex K. Williamson, Mark D. Munn, Sarah J. Ryker, Richard J. Wagner, James C. Ebbert, and Ann M. Vanderpool
U.S. GEOLOGICAL SURVEY CIRCULAR 1144
A contribution of the National Water-Quality Assessment (NAWQA) Program
The use of firm, trade, and brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Government.
Numbers in [ ] refer to References.
In-text links to figures generally point to the figure caption, below the actual figure, so you may need to scroll up. Also, colors may not show up correctly, depending on the browser being used.
|AccessibilityFOIAPrivacyPolicies and Notices|