Monday, August 5th, 2013
Key factors have been identified that help determine the vulnerability of public-supply wells to contamination. A new USGS report describes these factors, providing insight into which contaminants in an aquifer might reach a well and when, how and at what concentration they might arrive. About one-third of the U.S. population gets their drinking water from
Tuesday, July 30th, 2013
To keep pace with a rapid schedule and increasing demand, the USGS has posted new US Topo quadrangles covering Indiana(640 maps), Iowa (1,011 maps), North Carolina (833 maps), Pennsylvania (798 maps) and Virginia (596 maps). These new quads replace the first edition US Topo maps for those states. The replaced maps will be added to
Tuesday, July 30th, 2013
The Santa Cruz River watershed, located on the Arizona-Sonora portion of the U.S.-Mexico border, depends for its perennial flow on an international treatment plant that treats wastewater on both sides of the border before discharging it into the river in Arizona. This treated wastewater has great value for nearby wildlife and ecosystem managers, property owners
Friday, July 26th, 2013
Climate change is expected to amplify both droughts and wildfires across the western United States. A new study shows that the effects of drought and fire work in combination, such that forests experiencing drought will see more dead trees in the aftermath of wildfires.
Wednesday, July 24th, 2013
The U.S. Geological Survey’s Wyoming and Montana water science centers will merge in October, improving science capacity and capabilities by integrating scientists in the two centers and allowing them to share equipment and expertise.
Thursday, July 18th, 2013
Have you ever dropped a stick into a river and wondered where it might go if it floated all the way downstream? Now you can trace its journey using Streamer – a new on-line service from the National Atlas of the United States. Streamer is an online map service that lets anyone trace downstream along
Tuesday, July 16th, 2013
A new USGS groundwater model provides a tool for evaluating possible solutions to the saltwater encroachment in the “2,000-foot” sand aquifer of the Baton Rouge area, an important source of groundwater for Baton Rouge. The just-released computer model simulates groundwater flow in the two primary sections of Baton Rouge’s aquifer, the “1,500-foot” and “2,000-foot” sands.
Thursday, July 11th, 2013
A new USGS report describes how the health of our Nation’s streams is being degraded by streamflow modifications and elevated levels of nutrients and pesticides.
Wednesday, July 10th, 2013
In an ever-changing environment, it would be ideal if the U.S Geological Survey had a presence in every corner of the nation. While we may not be able to cover every inch of the landscape, we can greatly enhance our scope with your help.
Monday, July 1st, 2013
The probability of hurricane-induced coastal change on sandy beaches from Florida to New York has been assessed for the first time in two U.S. Geological Survey studies released today. The two reports — one assessing the coastline from Florida to North Carolina, the other from Virginia to New York — can function as part of
