By Hugh E. Bevans, Michael S. Lico, and Stephen J. Lawrence
U.S. GEOLOGICAL SURVEY CIRCULAR 1170
A contribution of the National Water-Quality Assessment (NAWQA) Program
Numbers in [ ] refer to References.
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.
In-text links to figures generally point to the figure caption, below the actual figure.