Reference

The U.S. Geological Survey (USGS) collaborated with the China Geological Survey (CGS) to conduct a mineral resource assessment of Mesozoic porphyry copper deposits in East Asia. This area hosts...

Advances in technologies for quantifying bedload fluxes and in some cases bedload size distributions in rivers show promise toward supplanting traditional physical samplers and sampling methods...

Flood-frequency analyses use statistical methods to compute peak streamflows for selected recurrence intervals-the average number of years between peak flows that are equal to or greater than a...

Groundwater mounding occurs beneath stormwater man-agement structures designed to infiltrate stormwater runoff. Concentrating recharge in a small area can cause groundwater mounding that affects the...

A precipitation runoff model for the Pomperaug River watershed, Connecticut was developed to address issues of concern including the effect of development on streamflow and groundwater recharge, and...

The U.S. Geological Survey, in cooperation with the City of Dallas Water Utilities Division, did a study to character-ize bromide, chloride, and sulfate concentrations and loads at three U.S...

Water managers in rural Arizona are under increasing pressure to provide sustainable supplies of water despite rapid population growth and demands for environmental protection. This report describes...

On May 15, 2006, a breach in the riverbank caused an avulsion in the Suncook River in Epsom, NH. The breach in the riverbank and subsequent avulsion changed the estab-lished flood zones along the...

The Niobrara River is an ecologically and economically important resource in Nebraska. The Nebraska Department of Natural Resources' recent designation of the hydraulically connected surface- and...

Arsenic is a metalloid whose name conjures up images of murder. Nonetheless, certain prokaryotes use arsenic oxyanions for energy generation, either by oxidizing arsenite or by respiring arsenate...

To assist Kentucky in refining numeric nutrient criteria in the Pennyroyal Bioregion, the U.S. Geological Survey and the Kentucky Division of Water collected and analyzed water chemistry, turbidity,...

Phosphorus from natural and human sources is likely to be discharged from groundwater to streams in certain geo-chemical environments. Water-quality data collected from 1991 through 2007 in paired...

During 2007-08, the U.S. Geological Survey, in coopera-tion with the U.S. Department of the Army, conducted a study to evaluate the relative age of groundwater in Pre-Wisconsinan till and underlying...

Muddy Creek near Kremmling, Colorado, is a regulated, meandering, gravel-bed stream that has been monitored for geo-morphic change since 2001. One reach of the creek was reconfig-ured using...

A paleolimnological approach was taken to aid the Grand Portage Reservation, in northeastern Minnesota, in determin-ing reference conditions for lakes on the reservation. The U.S. Geological Survey,...

Previous water-quality assessments reported elevated concentrations of nitrate and methane in water from domestic wells screened in shallow zones of the Wasatch Formation, Garfield County, Colorado...

This report, the sixth in a series published since 1994, presents analyses of hydrologic data in Monroe County for the period October 2002 through September 2008. Streamflows and water quality were...

A study of dewatering of the fractured-bedrock aquifer in a localized area of east-central North Carolina was conducted from March 2008 through February 2009 to gain an understanding of why some...

In 2009, record-breaking snowfalls and additional spring moisture caused severe flooding in parts of the Missouri River and Red River of the North (Red River) Basins in North Dakota, Minnesota, and...

The water supply in areas of the North Platte River Basin in the Nebraska Panhandle has been designed as fully appropriate or over appropriated by the Nebraska Department of Natural Resources...

A part of the Equus Beds aquifer in southwestern Harvey County and northwestern Sedgwick County was developed to supply water to residents of Wichita and for irrigation in south-central Kansas...

This report, prepared in cooperation with the Pennsyl-vania Department of Environmental Protection (PaDEP), the Eastern Pennsylvania Coalition for Abandoned Mine Reclama-tion, and the Dauphin County...

A cooperative study between the U.S. Geological Survey, the University of Wisconsin (UW)-Madison Discovery Farms program (Discovery Farms), and the UW-Platteville Pioneer Farm program (Pioneer Farm)...

PersitsForewordThis report was prepared as part of the 2000 World Energy Assessment Project of the U.S. Geological Survey (USGS). For this project, the world was divided into 8 regions and 937...

Extensive information about the construction of dams or potential downstream hazards in the event of a dam breach is not available for many small reservoirs within the Black Hills National Forest. In...

Hopewell Furnace, located approximately 50 miles north-west of Philadelphia, was a cold-blast, charcoal iron furnace that operated for 113 years (1771 to 1883). The purpose of this study by the U.S...

Arsenic (As) concentrations in the waters of Raccoon Creek in southern New Jersey commonly exceed the State's Surface Water Quality Standard (SWQS) for freshwater of 0.017 microgram per liter (μg/L)...

Methods for estimating the magnitude of floods for selected percent chance exceedance probabilities are presented for ungaged streams in Florida that are not sub stantially affected by regulation,...

The U.S. Geological Survey in cooperation with the North Dakota Department of Transportation, North Dakota State Water Commission, and U.S. Army Corps of Engineers, developed a two-dimensional...

The relation between dam releases and dissolved- oxygen concentration, saturation and deficit, downstream from Roanoke Rapids Dam in North Carolina was evaluated from 2005 to 2009. Dissolved-oxygen...