http://pubs.usgs.gov/sir/2013/5079/SIR2013-5079.pdf
Evaluates long-term cumulative depletion volumes in 40 separate aquifers in the U.S. Finds the rate of groundwater depletion has increased markedly since about 1950 with maximum rates occurring during the most recent period. From the U.S. Geological Survey
http://cfpub.epa.gov/ncea/global/recordisplay.cfm?deid=247495
Reports on the vulnerability of 20 urban U.S. watersheds to a range of plausible mid-21st Century climate change and urban development scenarios. From the Environmental Protection Agency
http://pubs.usgs.gov/of/2013/1052/pdf/OFR2013-1052.pdf
This report documents flow-adjusted trends in sediment and total nitrogen and phosphorus concentrations for 31 stations in 1985-2011 and for 32 in 2002-2011. For 2006-2011 period, 65 stations are covered. From the U.S. Geological Survey
http://www.nap.edu/catalog.php?record_id=18344
Examines scientific and technical issues related to determining risks to endangered species and calls for federal agencies with responsibilities for protecting these species to develop common assessment approaches. From the National Research Council
http://pubs.usgs.gov/circ/1384/support/c1384.pdf
Describes the need for a Water Census and steps taken toward establishing it. Also discusses plans for the future. From the U.S. Geological Survey
http://pubs.usgs.gov/of/2013/1025/OFR2013_1025.pdf
Describes landscape disturbances from hydraulic-fracturing used to extract natural gas from the MarcellusShale located in the Allegheny Plateau. From the U.S. Geological Survey
Despite the date, this report was released in March 2013. Provides information on the ecological condition of the nation’s rivers and streams (not good) and the key stress factors that affect them. It also compares changes in water quality from an earlier study, the Wadeable Streams Assessment of 2004. From the Environmental Protection Agency
http://www.fas.org/sgp/crs/misc/R42992.pdf
The surge in gun sales following the Newtown school massacre and renewed legislative efforts at gun control have resulted in increases in funds for wildlife conservation from the excise tax on guns and ammunition sales. This report examines these taxes, their allocation, and their use. From the Congressional Research Service, posted by the Federation of American Scientists