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: 85089
Status and trends in the Lake Superior fish community, 2016 Status and trends in the Lake Superior fish community, 2016
In 2016, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 35 offshore stations. Spring and summer water temperatures in 2016 were warmer than average and considerably warmer than observed in 2014 and 2015. In the nearshore zone, a total of 17,449 individuals from 20 species or morphotypes were collected. Nearshore lakewide mean biomass was 2.2...
Authors
Mark R. Vinson, Lori M. Evrard, Owen T. Gorman, Daniel L. Yule
Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2015 Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2015
Authors
David A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. Harris
Status and understanding of groundwater quality in the Bear Valley and Lake Arrowhead Watershed Study Unit, 2010: California GAMA Priority Basin Project Status and understanding of groundwater quality in the Bear Valley and Lake Arrowhead Watershed Study Unit, 2010: California GAMA Priority Basin Project
Groundwater quality in the 112-square-mile Bear Valley and Lake Arrowhead Watershed (BEAR) study unit was investigated as part of the Priority Basin Project (PBP) of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The study unit comprises two study areas (Bear Valley and Lake Arrowhead Watershed) in southern California in San Bernardino County. The GAMA-PBP is conducted...
Authors
Timothy M. Mathany, Carmen A. Burton
Status of the 3D Elevation Program, 2015 Status of the 3D Elevation Program, 2015
The 3D Elevation Program (3DEP) is a cooperative activity to collect light detection and ranging (lidar) data for the conterminous United States, Hawaii, and U.S. territories; and interferometric synthetic aperture radar (IfSAR) elevation data for Alaska during an 8-year period. The U.S. Geological Survey (USGS) and partner organizations acquire high-quality three-dimensional elevation...
Authors
Larry J. Sugarbaker, Diane F. Eldridge, Allyson L. Jason, Vicki Lukas, David L. Saghy, Jason M. Stoker, Diana R. Thunen
Streambed scour evaluations and conditions at selected bridge sites in Alaska, 2013–15 Streambed scour evaluations and conditions at selected bridge sites in Alaska, 2013–15
Streambed scour potential was evaluated at 52 river- and stream-spanning bridges in Alaska that lack a quantitative scour analysis or have unknown foundation details. All sites were evaluated for stream stability and long-term scour potential. Contraction scour and abutment scour were calculated for 52 bridges, and pier scour was calculated for 11 bridges that had piers. Vertical...
Authors
Robin A. Beebee, Karenth L. Dworsky, Schyler J. Knopp
Streamflow alteration at selected sites in Kansas Streamflow alteration at selected sites in Kansas
An understanding of streamflow alteration in response to various disturbances is necessary for the effective management of stream habitat for a variety of species in Kansas. Streamflow alteration can have negative ecological effects. Using a modeling approach, streamflow alteration was assessed for 129 selected U.S. Geological Survey streamgages in the State for which requisite...
Authors
Kyle E. Juracek, Ken Eng
Streamflow characteristics and trends along Soldier Creek, Northeast Kansas Streamflow characteristics and trends along Soldier Creek, Northeast Kansas
Historical data for six selected U.S. Geological Survey streamgages along Soldier Creek in northeast Kansas were used in an assessment of streamflow characteristics and trends. This information is required by the Prairie Band Potawatomi Nation for the effective management of tribal water resources, including drought contingency planning. Streamflow data for the period of record at each...
Authors
Kyle E. Juracek
Streamflow conditions along Soldier Creek, Northeast Kansas Streamflow conditions along Soldier Creek, Northeast Kansas
The availability of adequate water to meet the present (2017) and future needs of humans, fish, and wildlife is a fundamental issue for the Prairie Band Potawatomi Nation in northeast Kansas. Because Soldier Creek flows through the Prairie Band Potawatomi Nation Reservation, it is an important tribal resource. An understanding of historical Soldier Creek streamflow conditions is required...
Authors
Kyle E. Juracek
Streamflow investigations on a reach of Hobble Creek near Springville, Utah Streamflow investigations on a reach of Hobble Creek near Springville, Utah
The Central Utah Water Conservancy District (CUWCD) is proposing to deliver supplemental flow to Hobble Creek from Strawberry Reservoir through the Mapleton-Springville Lateral pipeline. A substantial portion of the supplemental water is intended to benefit June Sucker recovery and other fish and wildlife along Hobble Creek. The objective of this study was to determine gains or losses of...
Authors
Steven J. Gerner
Streamflow of 2016—Water year summary Streamflow of 2016—Water year summary
The maps and graphs in this summary describe national streamflow conditions for water year 2016 (October 1, 2015, to September 30, 2016) in the context of streamflow ranks relative to the 87-year period of 1930–2016, unless otherwise noted. The illustrations are based on observed data from the U.S. Geological Survey’s (USGS) National Streamflow Network. The period of 1930–2016 was used...
Authors
Xiaodong Jian, David M. Wolock, Harry F. Lins, Steven J. Brady
StreamStats, version 4 StreamStats, version 4
Authors
Kernell G. Ries, Jeremy K. Newson, Martyn J. Smith, John D. Guthrie, Peter A. Steeves, Tana Haluska, Katharine Kolb, Ryan F. Thompson, Richard D. Santoro, Hans W. Vraga
Structured decision making for conservation of bull trout (Salvelinus confluentus) in Long Creek, Klamath River Basin, south-central Oregon Structured decision making for conservation of bull trout (Salvelinus confluentus) in Long Creek, Klamath River Basin, south-central Oregon
With the decline of bull trout (Salvelinus confluentus), managers face multiple, and sometimes contradictory, management alternatives for species recovery. Moreover, effective decision-making involves all stakeholders influenced by the decisions (such as Tribal, State, Federal, private, and non-governmental organizations) because they represent diverse objectives, jurisdictions, policy...
Authors
Joseph R. Benjamin, Kevin McDonnell, Jason B. Dunham, William R. Brignon, James T. Peterson