Equations for estimating Clark Unit-hydrograph parameters for small rural watersheds in Illinois

Hydrogeologic and geochemical characteristics of the Ogallala and White River aquifers, Cheyenne, Wyoming

Water resources of Monroe County, New York, water years 1994-96, with emphasis on water quality in the Irondequoit Creek basin; atmospheric deposition, ground water, streamflow, trends in water quality, and chemical loads to Irondequoit Bay

Preliminary effects of streambank fencing of pasture land on the quality of surface water in a small watershed in Lancaster County, Pennsylvania

Potential errors associated with stage-discharge relations for selected streamflow-gaging stations, Maricopa County, Arizona

Simulation of the interaction of karstic lakes Magnolia and Brooklyn with the upper Floridan Aquifer, southwestern Clay County, Florida

Regional evaluation of evapotranspiration in the Everglades

Monthly variability and possible sources of nitrate in ground water beneath mixed agricultural land use, Suwannee and Lafayette Counties, Florida

Water and salt balance of Great Salt Lake, Utah, and simulation of water and salt movement through the causeway, 1987-98

Water-quality characteristics for selected streams in Lawrence County, South Dakota, 1988-92

Occurrence and distribution of methyl tert-butyl ether and other volatile organic compounds in drinking water in the Northeast and Mid-Atlantic regions of the United States, 1993-98

Concentration of selected sulfonylurea, sulfonamide, and imidazolinone herbicides, other pesticides, and nutrients in 71 streams, 5 reservoir outflows, and 25 wells in the midwestern United States, 1998

Relation of shallow water quality in the central Oklahoma aquifer to geology, soils, and land use

Hydrologic and water-quality characterization and modeling of the Chenoweth Run basin, Jefferson County, Kentucky

Water-quality assessment of the Sacramento River basin, California : water quality of fixed sites, 1996-1998