Friday, February 20th, 2015
Feb. 20, 2015—After surveying and analyzing centuries of evidence in the floodplain of the lower Roanoke River, USGS researchers, along with colleagues from the universities of Wisconsin and North Carolina, have developed a highly accurate estimate of sediment deposition amounts along the course of the river over three timescales — annual, decadal, and centennial.
Tuesday, February 17th, 2015
Feb. 12, 2015—Droughts in the U.S. Southwest and Central Plains during the last half of this century could be drier and longer than drought conditions seen in those regions in the last 1,000 years, according to a new NASA study. The study, published Thursday in the journal Science Advances, is based on projections from
Thursday, February 12th, 2015
Feb. 12, 2015—The U.S. Midwest and surrounding states have endured increasingly more frequent flood episodes over the past half-century, according to a study from the University of Iowa.
Wednesday, February 11th, 2015
Feb. 10, 2015—A new U.S. Geological Survey study shows how plants’ vulnerability to drought varies across the landscape; factors such as plant structure and soil type where the plant is growing can either make them more vulnerable or protect them from declines.
Tuesday, February 3rd, 2015
RESTON, Va., Feb. 3, 2015—New and improved science tools can help managers and researchers evaluate current threats and develop management strategies to protect and restore the valuable Great Lakes ecosystem.
Monday, January 19th, 2015
SAN DIEGO, Jan. 19, 2015—In the midst of the California rainy season, scientists are embarking on a field campaign designed to improve the understanding of the natural and human-caused phenomena that determine when and how the state gets its precipitation. They will do so by studying atmospheric rivers, meteorological events that include the famous rainmaker
Thursday, January 15th, 2015
CARSON CITY, Nev., Jan. 15, 2015—The newly released web-based Walker Basin Hydro Mapper aims to provide real-time visualization of streamflow, and waterbody stage and volume in the Walker River Basin. The mapper provides data covering approximately 3,000 square miles of Nevada and California, from the headwaters of the Sierra Nevada Mountains to the terminus of Walker Lake,
Saturday, December 27th, 2014
Groundwater chemists and hydrologists are keenly interested in expanding the knowledge of environmental tracers that can be used to determine groundwater age. The age of groundwater is a valuable parameter that serves to inform many types of groundwater availability studies.
Friday, December 19th, 2014
NARRAGANSETT, R.I., Dec. 17, 2014—A chemical oceanographer at the University of Rhode Island who measured organic pollutants in the air and water around Lake Erie and Lake Ontario has found that airborne emissions are no longer the primary cause of the lakes’ contamination. Instead, most of the lakes’ chemical pollutants come from sources on land
Monday, December 8th, 2014
CHARLOTTESVILLE, Va., Dec. 8, 2014—The majority of streams in the Chesapeake Bay region are warming, and that increase appears to be driven largely by rising air temperatures. These findings are based on new U.S. Geological Survey research published in the journal Climatic Change.