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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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Concentration and flux of total and dissolved phosphorus, total nitrogen, chloride, and total suspended solids for monitored tributaries of Lake Champlain, 1990-2012 Concentration and flux of total and dissolved phosphorus, total nitrogen, chloride, and total suspended solids for monitored tributaries of Lake Champlain, 1990-2012
Annual and daily concentrations and fluxes of total and dissolved phosphorus, total nitrogen, chloride, and total suspended solids were estimated for 18 monitored tributaries to Lake Champlain by using the Weighted Regressions on Time, Discharge, and Seasons regression model. Estimates were made for 21 or 23 years, depending on data availability, for the purpose of providing timely and...
Authors
Laura Medalie
Energy map of southwestern Wyoming, Part B: oil and gas, oil shale, uranium, and solar Energy map of southwestern Wyoming, Part B: oil and gas, oil shale, uranium, and solar
The U.S. Geological Survey (USGS) has compiled Part B of the Energy Map of Southwestern Wyoming for the Wyoming Landscape Conservation Initiative (WLCI). Part B consists of oil and gas, oil shale, uranium, and solar energy resource information in support of the WLCI. The WLCI represents the USGS partnership with other Department of the Interior Bureaus, State and local agencies, industry...
Authors
Laura R.H. Biewick, Anna B. Wilson
Effects of wastewater effluent discharge on stream quality in Indian Creek, Johnson County, Kansas Effects of wastewater effluent discharge on stream quality in Indian Creek, Johnson County, Kansas
Contaminants from point and other urban sources affect stream quality in Indian Creek, which is one of the most urban drainage basins in Johnson County, Kansas. The Johnson County Douglas L. Smith Middle Basin and Tomahawk Creek Wastewater Treatment Facilities discharge to Indian Creek. Data collected by the U.S. Geological Survey, in cooperation with Johnson County Wastewater, during...
Authors
Jennifer L. Graham, Guy M. Foster
Effects of wastewater effluent discharge and treatment facility upgrades on environmental and biological conditions of Indian Creek, Johnson County, Kansas, June 2004 through June 2013 Effects of wastewater effluent discharge and treatment facility upgrades on environmental and biological conditions of Indian Creek, Johnson County, Kansas, June 2004 through June 2013
Indian Creek is one of the most urban drainage basins in Johnson County, Kansas, and environmental and biological conditions of the creek are affected by contaminants from point and other urban sources. The Johnson County Douglas L. Smith Middle Basin (hereafter referred to as the “Middle Basin”) and Tomahawk Creek Wastewater Treatment Facilities (WWTFs) discharge to Indian Creek. In...
Authors
Jennifer L. Graham, Mandy L. Stone, Teresa J. Rasmussen, Guy M. Foster, Barry C. Poulton, Chelsea R. Paxson, Theodore D. Harris
Geologic and hydrogeologic frameworks of the Biscayne aquifer in central Miami-Dade County, Florida Geologic and hydrogeologic frameworks of the Biscayne aquifer in central Miami-Dade County, Florida
Evaluations of the lithostratigraphy, lithofacies, paleontology, ichnology, depositional environments, and cyclostratigraphy from 11 test coreholes were linked to geophysical interpretations, and to results of hydraulic slug tests of six test coreholes at the Snapper Creek Well Field (SCWF), to construct geologic and hydrogeologic frameworks for the study area in central Miami-Dade...
Authors
Michael A. Wacker, Kevin J. Cunningham, John Williams
Use of stable isotopes of nitrogen and water to identify sources of nitrogen in three urban creeks of Durham, North Carolina, 2011-12 Use of stable isotopes of nitrogen and water to identify sources of nitrogen in three urban creeks of Durham, North Carolina, 2011-12
A preliminary assessment of nitrate sources was conducted in three creeks that feed nutrient impaired Falls and Jordan Lakes in the vicinity of Durham County, North Carolina, from July 2011 to June 2012. Cabin Branch, Ellerbe Creek, and Third Fork Creek were sampled monthly to determine if sources of nitrate in surface water could be identified on the basis of their stable isotopic...
Authors
Kristen Bukowski McSwain, Megan B. Young, Mary L. Giorgino
Sediment-hosted stratabound copper assessment of the Neoproterozoic Roan Group, central African copperbelt, Katanga Basin, Democratic Republic of the Congo and Zambia Sediment-hosted stratabound copper assessment of the Neoproterozoic Roan Group, central African copperbelt, Katanga Basin, Democratic Republic of the Congo and Zambia
This study estimates the location, quality, and quantity of undiscovered copper in stratabound deposits within the Neoproterozoic Roan Group of the Katanga Basin in the Democratic Republic of the Congo and Zambia. The study area encompasses the Central African Copperbelt, the greatest sediment-hosted copper-cobalt province in the world, containing 152 million metric tons of copper in...
Authors
Michael L. Zientek, James D. Bliss, David W. Broughton, Michael Christie, Paul Denning, Timothy S. Hayes, Murray W. Hitzman, John D. Horton, Susan Frost-Killian, Douglas J. Jack, Sharad Master, Heather L. Parks, Cliff D. Taylor, Anna B. Wilson, Niki E. Wintzer, Jon Woodhead
Preliminary monitoring protocol for the tidal freshwater wetland restoration herbivory study in national capital parks--east: Appendix B Preliminary monitoring protocol for the tidal freshwater wetland restoration herbivory study in national capital parks--east: Appendix B
Four tidal freshwater wetland restoration projects have been undertaken within Anacostia Park on lands managed by the National Park Service since 1993. Monitoring the impacts of Canada goose (Branta canadensis) herbivory on the wetland vegetation will play a key role in determining the long-term health of these tidal freshwater wetland restorations. This Implementation Plan lays out...
Authors
Cairn Krafft, Jeffrey S. Hatfield
Palila restoration research, 1996−2012 Palila restoration research, 1996−2012
The Palila Restoration Project was initiated in 1996 by the U.S. Geological Survey to assist government agencies mitigate the effects of realigning Saddle Road (Highway 200) through Palila Critical Habitat (U.S. Fish and Wildlife Service 1998, Federal Highway Administration 1999). Ecological research on the palila (Loxioides bailleui), an endangered Hawaiian forest bird, carried out by...
Authors
Paul C. Banko, Chris Farmer, Carter T. Atkinson, Kevin W. Brinck, Richad Camp, Colleen Cole, Raymond Canner, Steve Dougill, Daniel Goltz, Elizabeth Gray, Steven C. Hess, Jennifer Higashino, Susan I. Jarvi, Luanne Johnson, Leona Laniawe, Megan Laut, Linda Miller, Christopher J. Murray, Daniel Nelson, David L. Leonard, Peter Oboyshi, Leanne Patch-Highfill, David D. Pollock, Kalei Rapozo, Marla Schwarzfeld, John Slotterback, Robert M. Stephens
Downscaled climate projections for the Southeast United States: evaluation and use for ecological applications Downscaled climate projections for the Southeast United States: evaluation and use for ecological applications
Climate change is likely to have many effects on natural ecosystems in the Southeast U.S. The National Climate Assessment Southeast Technical Report (SETR) indicates that natural ecosystems in the Southeast are likely to be affected by warming temperatures, ocean acidification, sea-level rise, and changes in rainfall and evapotranspiration. To better assess these how climate changes...
Authors
Adrienne Wootten, Kara Smith, Ryan Boyles, Adam Terando, Lydia Stefanova, Vasru Misra, Tom Smith, David L. Blodgett, Fredrick Semazzi
Ecosystem effects in the Lower Mississippi River Basin Ecosystem effects in the Lower Mississippi River Basin
The 2011 Mississippi River flood in the Lower Mississippi River Basin was one of the largest flood events in recorded history, producing the largest or next to largest peak streamflow for the period of record at a number of streamgages on the lower Mississippi River. Ecosystem effects include changes to wetlands, nutrient transport, and land accretion and sediment deposition changes...
Authors
D. Phil Turnipseed, Yvonne C. Allen, Brady R. Couvillion, Karen L. McKee, William C. Vervaeke
Rangewide climate vulnerability assessment for threatened Bull Trout Rangewide climate vulnerability assessment for threatened Bull Trout
The bull trout, listed as threatened under the Endangered Species Act, is well adapted to the cold waters of the Northwest. Recent changes in climate have caused winter flooding and warmer summer water temperatures in the region, reducing the cold-water habitats that bull trout depend on. The southernmost bull trout populations, found in Oregon, Washington, Idaho, Montana, and Nevada...
Authors
Jason B. Dunham