The Computer Program Estimate Trend (ESTREND), a system for the detection of trends in water-quality data

by Schertz, Terry L.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Books and Open-File Reports Section [distributor], 1991

Trend analysis of weekly acid rain data, 1978-83

by Schertz, Terry L.
Published: U.S. Geological Survey ; Open-File Services Section, Western Distribution Branch, U.S. Geological Survey [distributor], 1985

Sources of trends in water-quality data for selected streams in Texas, 1975-89 water years

by Schertz, Terry L.,
Published: U.S. Geological Survey, 1994

Trend analysis of weekly acid rain data, 1978-83

by Schertz, Terry L.,
Published: U.S. Geological Survey, 1985

Statistical summary of daily values data and trend analysis of dissolved-solids data at National Stream Quality Accounting Network (NASQAN) stations

by Wells, Frank C.
Published: U.S. Dept. of the Interior, Geological Survey ; For sale by Open-File Services Section, Western Distribution Branch, U.S. Geological Survey, 1983

Computation and use of volume-weighted-average concentrations to determine long-term variations of selected water-quality constituents in lakes and reservoirs

by Wells, Frank C.,
Published: U.S. Geological Survey, 1984

Statistical summary of daily values data and trend analysis of dissolved-solids data at National Stream Quality Accounting Network (NASQAN) stations

by Wells, Frank C.,
Published: U.S. Geological Survey, 1983

Patterns of acid deposition variability in the eastern United States, 1981-84

by Lins, Harry F.
Published: Dept. of the Interior, U.S. Geological Survey : Books and Open-File Reports [distributor], 1987

Summary and evaluation of pesticides in field blanks collected for the National Water-Quality Assessment Program, 1992-95

by Martin, Jeffrey D.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1999

Statistical summary and evaluation of the quality of surface water in the Colorado River Basin, 1973-82 water years

by Andrews, Freeman L.,
Published: U.S. Geological Survey, 1986

Effects of October 1981 flood on the quantity and quality of water in selected streams and reservoirs in the Brazos River Basin, Texas

by Wells, Frank C.
Published: U.S. Dept. of the Interior, Geological Survey ; Open-File Services Section, Western Distribution Branch, 1984

Effects of October 1981 flood on the quantity and quality of water in selected streams and reservoirs in the Brazos River Basin, Texas

by Wells, Frank C.
Published: U.S. Geological Survey ; Open-File Services Section, Western Distribution Branch, U.S. Geological Survey [distributor], 1984