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.
Filter Total Items: 85088
System characterization report on the Gaofen-1 System characterization report on the Gaofen-1
Authors
Mahesh Shrestha, Aparajithan Sampath, Shankar N. Ramaseri Chandra, Jon Christopherson, Jerad Shaw, Gregory L. Stensaas, Cody Anderson
System characterization report on the German Aerospace Center (DLR) Earth Sensing Imaging Spectrometer (DESIS) System characterization report on the German Aerospace Center (DLR) Earth Sensing Imaging Spectrometer (DESIS)
Authors
Mahesh Shrestha, Aparajithan Sampath, Shankar N. Ramaseri Chandra, Jon Christopherson, Jerad Shaw, Cody Anderson
Deposit classification scheme for the Critical Minerals Mapping Initiative Global Geochemical Database Deposit classification scheme for the Critical Minerals Mapping Initiative Global Geochemical Database
A challenge for the global economy is to meet the growing demand for commodities used in today’s advanced technologies. Critical minerals are commodities (for example, elements, compounds, minerals) deemed vital to the economic and national security of individual countries that are vulnerable to supply disruption. The national geological agencies of Australia, Canada, and the United...
Authors
Albert H. Hofstra, Vladimir Lisitsin, Louise Corriveau, Suzanne Paradis, Jan Peter, Kathleen Lauziere, Christopher Lawley, Michael Gadd, Jean-Luc Pilote, Ian Honsberger, Evgeniy Bastrakov, David C. Champion, Karol Czarnota, Michael P. Doublier, David L. Huston, Oliver Raymond, Simon VanDerWielen, Poul Emsbo, Matthew Granitto, Douglas C. Kreiner
Water resources of St. Landry Parish, Louisiana Water resources of St. Landry Parish, Louisiana
Information concerning the availability, use, and quality of water in St. Landry Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. In 2014, about 116.75 million gallons per day (Mgal/d) of water were withdrawn...
Authors
Maxwell A. Lindaman, Vincent E. White
Workflow for using unmanned aircraft systems and traditional geospatial data to delineate agricultural drainage tiles at edge-of-field sites Workflow for using unmanned aircraft systems and traditional geospatial data to delineate agricultural drainage tiles at edge-of-field sites
Managing nutrient and sediment runoff from fields that drain to the Great Lakes is key to mitigating harmful algal blooms. Implementation of best management practices on agricultural land is considered a critical step to improving water quality in these streams, however the effect of these best management practices is difficult to quantify. The purpose of this study was to use a suite of...
Authors
J. Jeremy Webber, Tanja N. Williamson
Tracking the source of metals to the San Juan River Tracking the source of metals to the San Juan River
Authors
Johanna M. Blake, Shaleene B. Chavarria, Anne-Marie Matherne
Impacts of sediment removal from and placement in coastal barrier island systems Impacts of sediment removal from and placement in coastal barrier island systems
Authors
Jennifer L. Miselis, James G. Flocks, Sara L. Zeigler, Davina L. Passeri, David R. Smith, Jill R. Bourque, Christopher R. Sherwood, Christopher G. Smith, Daniel J. Ciarletta, Kathryn E.L. Smith, Kristen Hart, David C. Kazyak, Alicia Berlin, Bianca Prohaska, Teresa Calleson, Kristi Yanchis
Use of dissolved oxygen monitoring to evaluate phosphorus loading in Connecticut streams, 2015–18 Use of dissolved oxygen monitoring to evaluate phosphorus loading in Connecticut streams, 2015–18
The Connecticut Department of Energy and Environmental Protection (CT DEEP) has developed an interim phosphorus reduction strategy to establish water-quality-based phosphorus limits in nontidal freshwaters for industrial and municipal water pollution control facilities. A recommendation in the strategy included the addition of diurnal dissolved oxygen (DO) sampling to the sampling of...
Authors
Brittney Izbicki, Jonathan Morrison
Sediment concentrations and loads upstream from and through John Redmond Reservoir, east-central Kansas, 2010–19 Sediment concentrations and loads upstream from and through John Redmond Reservoir, east-central Kansas, 2010–19
Streambank erosion and reservoir sedimentation are primary concerns of resource managers in Kansas and throughout many regions of the United States and negatively affect flood control, water supply, and recreation. The Cottonwood and upper Neosho Rivers drain into John Redmond Reservoir, and since reservoir completion in 1964, there has been substantial conservation-pool sedimentation...
Authors
Ariele R. Kramer, Cara L. Peterman-Phipps, Matthew D. Mahoney, Bradley S. Lukasz
Synthetic aperture radar and optical mapping used to monitor change and replacement of Phragmites australis marsh in the Lower Mississippi River Delta, Louisiana Synthetic aperture radar and optical mapping used to monitor change and replacement of Phragmites australis marsh in the Lower Mississippi River Delta, Louisiana
Synthetic aperture radar (SAR) mapping of density as an enhancement of Phragmites australis optical live fractional cover (LFC) mapping was carried out in the lower Mississippi Delta during 2016 to 2019. Also, as part of the study, the replacement of P. australis with elephant-ear was analyzed. To that end, yearly maps from 2016 to 2019 of L-band SAR horizontal send, vertical receive (HV...
Authors
Elijah W. Ramsey III, Amina Rangoonwala
Distribution and demography of coastal cactus wrens (Campylorhynchus brunneicapillus) in southern San Diego County, California—2020 data summary Distribution and demography of coastal cactus wrens (Campylorhynchus brunneicapillus) in southern San Diego County, California—2020 data summary
Authors
Suellen Lynn, Barbara E. Kus
Greater Yellowstone climate assessment: Past, present, and future climate change in the greater Yellowstone watersheds Greater Yellowstone climate assessment: Past, present, and future climate change in the greater Yellowstone watersheds
The Greater Yellowstone Area (GYA) is one of the last remaining large and nearly intact temperate ecosystems on Earth. GYA was originally defined in the 1970s as the Greater Yellowstone Ecosystem, which encompassed the minimum range of the grizzly bear. The boundary now includes about 22 million acres (8.9 million ha) in northwestern Wyoming, south central Montana, and eastern Idaho...
Authors
Steven W. Hostetler, Cathy Whitlock, Bryan Shuman, David Liefert, Charles Wolf Drimal, Scott Bischke