Data

In a crude-oil-contaminated sandy aquifer at the Bemidji site in northern Minnesota, biodegradation of petroleum hydrocarbons resulted in transient increases in magnetic susceptibility under high water table conditions. The magnetic susceptibility subsequently decreased again when the water table dropped. This data set was assembled to illustrate the cause of the magnetic susceptibility...

This product consists of 29 datasets of tabular data and associated metadata for watershed characteristics of 1,530 study sites of the Surface Water Trends (SWT) project of the U.S. Geological Surveys (USGS) National Water Quality Program (NWQP). The project is conducting national studies of trends in water quality of streams and rivers for periods ranging from 10 to 40 years, between...

The National Water Information System (NWIS) web application provides access to real-time and historical surface-water, groundwater, water-quality, and water-use data collected at approximately 1.5 million sites across all 50 states.

Major flood events have the potential to impact water quality. In this study, the effects of the September 2013 South Platte River flood in Colorado were assessed on the urban water cycle and basin-wide scales using time-series water sampling of three source waters (tap water, wastewater treatment facility effluent, and receiving stream) and a longitudinal sampling of the South Platte...

These geospatial data sets were developed as part of a new analysis of all known current and historical rain gages in the Luquillo Mountains, Puerto Rico published in the journal article Murphy, S.F., Stallard, R.F., Scholl, M.A., Gonzalez, G., and Torres-Sanchez, A.J., 2017, Reassessing rainfall in the Luquillo Mountains, Puerto Rico: Local and global ecohydrological implications: PLOS...

This data release consist of 34 channel cross sections of Powder River measured from 1975 through 2016 along a 90-kilometer reach from Moorhead to Broadus, Montana. Most channel cross sections were measured annually from 1975 through 1998 and then intermittently through 2016. In 1978, after all cross sections had been established, there was a extreme flood with an approximate 50-year...

In 2016, non-interpretive streamflow statistics were compiled for streamgages located throughout the Nation and stored in the StreamStatsDB database for use with StreamStats and other applications. Two previously published USGS computer programs that were designed to help calculate streamflow statistics were updated to better support StreamStats as part of this effort. These programs are...

Interactively identify a watershed boundary and obtain detailed streamflow statistics. For an introduction to StreamStats click HERE.

In 2013 to 2015, 833 public supply wells in 15 Principal aquifers in the United States were sampled to identify which aquifers contained high methane concentrations (greater than 1 mg/L) and determine the geologic, hydrologic, and geochemical conditions associated with high concentrations. This study represents the first national assessment of methane in aquifers used for public supply...

This dataset contains stable isotope (d13C) and radioisotope (D14C) compositions of dissolved inorganic carbon, dissolved organic carbon, particulate organic carbon, and bed material organic carbon samples collected from rivers in the Upper Mississippi River Basin between October 2014 and February 2016. Rivers were sampled at USGS gaging stations: Minnesota River at Fort Snelling State...

This dataset includes the field measurements and laboratory analyses of surface water, seston, and sediment collected from Lake Powell, within Glen Canyon National Recreation area (GLCA), during high flow (May-June 2014) and low flow (August 2015) conditions. The study area includes 12-13 sampling sites that follow a transect spanning the entire length of the reservoir from the Colorado...

This data release consists of four Excel files (one for each cross section) containing worksheets corresponding to each channel cross-section survey (~25-31) between 1996 and 2014. These worksheets contain the basic survey data (dates, instruments, reference elevations, foresights, distances from reference pins, and elevations). An additional worksheet contains the measured unit-volume...