Trends in selected water-quality characteristics, Powder River and tributaries, Montana and Wyoming, water years 1968-88 and 1975-88
By: by Lawrence E. Cary ; prepared in cooperation with the Montana Department of Natural Resources and Conservation, the Wyoming State Engineer, and the Wyoming Water Development Commission
Contributors: Montana. Dept. of Natural Resources and Conservation; Wyoming. State Engineer's Office; Wyoming Water Development Commission; Geological Survey (U.S.)
Series: Water-resources investigations report -- 91-4029
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey; Books and Open-File Reports Section [distributor]
Published: 1991
Place of publication: Helena, Mont; Denver, CO
Language: eng
Number of pages: 42
Subjects: Water quality -- Powder River Basin (Wyo. and Mont.); Powder River Basin (Wyo. and Mont.)
Other titles: Trends in selected water quality characteristics, Powder River and tributaries, Montana and Wyoming, water years 1968-88 and 1975-88
Notes: Shipping list no.: 91-455-P

"April 1991."

Includes bibliographical references (p. 41-42)