Reports
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 82,000 reports authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Historic and forecasted population and land-cover change in eastern North Carolina, 1992-2030 Historic and forecasted population and land-cover change in eastern North Carolina, 1992-2030
The Southeast Regional Partnership for Planning and Sustainability (SERPPAS) was formed in 2005 as a partnership between the Department of Defense (DOD) and State and Federal agencies to promote better collaboration in making resource-use decisions. In support of this goal, the U.S. Geological Survey (USGS) conducted a study to evaluate historic population growth and land-cover change...
Authors
Peter R. Claggett, Hearn, David I. Donato
Peak flow regression equations For small, ungaged streams in Maine: Comparing map-based to field-based variables Peak flow regression equations For small, ungaged streams in Maine: Comparing map-based to field-based variables
Regression equations to estimate peak streamflows with 1- to 500-year recurrence intervals (annual exceedance probabilities from 99 to 0.2 percent, respectively) were developed for small, ungaged streams in Maine. Equations presented here are the best available equations for estimating peak flows at ungaged basins in Maine with drainage areas from 0.3 to 12 square miles (mi2). Previously...
Authors
Pamela J. Lombard, Glenn A. Hodgkins
Summary of oceanographic and water-quality measurements in Rachel Carson National Wildlife Refuge, Wells, Maine, in 2013 Summary of oceanographic and water-quality measurements in Rachel Carson National Wildlife Refuge, Wells, Maine, in 2013
Suspended-sediment transport is a critical element controlling the geomorphology of tidal wetland complexes. Wetlands rely on organic material and inorganic sediment deposition to maintain their elevation relative to sea level. The U.S. Geological Survey performed observational deployments to measure suspended-sediment concentration and water flow rates in the tidal channels of the...
Authors
Ellyn T. Montgomery, Neil K. Ganju, Patrick J. Dickhudt, Jonathan Borden, Marinna A. Martini, Sandra M. Brosnahan
Geospatial compilation and digital map of centerpivot irrigated areas in the mid-Atlantic region, United States Geospatial compilation and digital map of centerpivot irrigated areas in the mid-Atlantic region, United States
To evaluate water availability within the Northern Atlantic Coastal Plain, the U.S. Geological Survey, in cooperation with the University of Delaware Agricultural Extension, created a dataset that maps the number of acres under center-pivot irrigation in the Northern Atlantic Coastal Plain study area. For this study, the extent of the Northern Atlantic Coastal Plain falls within areas of...
Authors
Jason S. Finkelstein, Mark R. Nardi
Estimated abundance of wild burros surveyed on Bureau of Land Management Lands in 2014 Estimated abundance of wild burros surveyed on Bureau of Land Management Lands in 2014
The Bureau of Land Management (BLM) requires accurate estimates of the numbers of wild horses (Equus ferus caballus) and burros (Equus asinus) living on the lands it manages. For over ten years, BLM in Arizona has used the simultaneous double-observer method of recording wild burros during aerial surveys and has reported population estimates for those surveys that come from two...
Authors
Paul C. Griffin
Water quality of the Little Arkansas River and Equus Beds Aquifer before and concurrent with large-scale artificial recharge, south-central Kansas, 1995-2012 Water quality of the Little Arkansas River and Equus Beds Aquifer before and concurrent with large-scale artificial recharge, south-central Kansas, 1995-2012
The city of Wichita artificially recharged about 1 billion gallons of water into the Equus Beds aquifer during 2007–2012 as part of Phase I recharge of the Artificial Storage and Recovery project. This report, prepared in cooperation by the U.S. Geological Survey and the city of Wichita, Kansas, summarizes Little Arkansas River (source-water for artificial recharge) andEquus Beds aquifer...
Authors
Daniel J. Tappa, Jennifer L. Lanning-Rush, Brian J. Klager, Cristi V. Hansen, Andrew C. Ziegler
Water quality of the Little Arkansas River and Equus Beds Aquifer before and concurrent with large-scale artificial recharge, south-central Kansas, 1995-2012 Water quality of the Little Arkansas River and Equus Beds Aquifer before and concurrent with large-scale artificial recharge, south-central Kansas, 1995-2012
This fact sheet describes baseline water quality of the Equus Beds aquifer and Little Arkansas River and water-quality effects of artificial recharge by the city of Wichita associated with Phase I (2007–present) of the Aquifer Storage and Recovery project. During 1995 through 2012, more than 8,800 surface water and groundwater water-quality samples were collected and analyzed for more...
Authors
Daniel J. Tappa, Jennifer L. Lanning-Rush, Andrew C. Ziegler
Hydrology of the middle San Pedro area, southeastern Arizona Hydrology of the middle San Pedro area, southeastern Arizona
In the middle San Pedro Watershed in southeastern Arizona, groundwater is the primary source of water supply for municipal, domestic, industrial, and agricultural use. The watershed comprises two smaller subareas, the Benson subarea and the Narrows-Redington subarea. Early 21st century projections for heavy population growth in the watershed have not yet become a reality, but increased...
Authors
Jeffrey T. Cordova, Jesse E. Dickinson, Kimberly R. Beisner, Candice B. Hopkins, Jeffrey R. Kennedy, Donald R. Pool, Edward P. Glenn, Pamela L. Nagler, Blakemore E. Thomas
Quantification of shoreline change along Hatteras Island, North Carolina: Oregon Inlet to Cape Hatteras, 1978-2002, and associated vector shoreline data Quantification of shoreline change along Hatteras Island, North Carolina: Oregon Inlet to Cape Hatteras, 1978-2002, and associated vector shoreline data
Shoreline change spanning twenty-four years was assessed along the coastline of Cape Hatteras National Seashore, at Hatteras Island, North Carolina. The shorelines used in the analysis were generated from georeferenced historical aerial imagery and are used to develop shoreline change rates for Hatteras Island, from Oregon Inlet to Cape Hatteras. A total of 14 dates of aerial photographs...
Authors
Cheryl J. Hapke, Rachel E. Henderson
Wind River subbasin restoration: Annual report of U.S. Geological Survey activities January 2014 through December 2014 Wind River subbasin restoration: Annual report of U.S. Geological Survey activities January 2014 through December 2014
Executive Summary The Wind River subbasin in southwest Washington State provides habitat for a population of wild Lower Columbia River steelhead Oncorhynchus mykiss, which are listed as threatened under the Endangered Species Act. No hatchery steelhead have been planted in the Wind River subbasin since 1994, and hatchery adults are estimated to be less than one percent of adults in any...
Authors
Ian G. Jezorek, Patrick J. Connolly
Storm tide monitoring during the blizzard of January 26-28, 2015, in eastern Massachusetts Storm tide monitoring during the blizzard of January 26-28, 2015, in eastern Massachusetts
The U.S. Geological Survey (USGS) deployed a temporary monitoring network of six storm surge sensors and four barometric pressure sensors along the Atlantic coast in eastern Massachusetts, from Plymouth to Newburyport, before the blizzard of January 26–28, 2015 (Blizzard of January 2015), to record the timing and magnitude of storm tide at select locations where forecasters had predicted...
Authors
Andrew J. Massey, Richard J. Verdi
Hurricane Sandy beach response and recovery at Fire Island, New York: Shoreline and beach profile data, October 2012 to October 2014 Hurricane Sandy beach response and recovery at Fire Island, New York: Shoreline and beach profile data, October 2012 to October 2014
In response to the forecasted impact of Hurricane Sandy, which made landfall on October 29, 2012, the U.S. Geological Survey (USGS) began a substantial data-collection effort to assess the morphological impacts to the beach and dune system at Fire Island, New York. Global positioning system (GPS) field surveys of the beach and dunes were conducted just prior to and after landfall and...
Authors
Rachel E. Hehre Henderson, Cheryl J. Hapke, Owen T. Brenner, Billy J. Reynolds