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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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Applying intrinsic potential models to evaluate salmon (Oncorhynchus spp.) introduction into main-stem and tributary habitats upstream from the Skagit River Hydroelectric Project, northern Washington Applying intrinsic potential models to evaluate salmon (Oncorhynchus spp.) introduction into main-stem and tributary habitats upstream from the Skagit River Hydroelectric Project, northern Washington

We assessed habitat suitability for salmonids across selected tributaries upstream from three hydroelectric dams on the upper Skagit River in Whatcom County, northern Washington. We used NetMap, a commercial toolset within the ArcMap geographic information system (GIS), to analyze stream attributes based upon a synthetic stream channel network derived from digital elevation models. The...
Authors
Jeffrey J. Duda, Jill M. Hardiman
By
Ecosystems Mission Area, Western Fisheries Research Center

Hydrogeology, karst, and groundwater availability of Monroe County, West Virginia Hydrogeology, karst, and groundwater availability of Monroe County, West Virginia

Monroe County is in southeastern West Virginia, encompassing an area of 474 square miles. The area consists of karst and siliciclastic aquifers of Ordovician, Silurian, Devonian, and Mississippian age and is in parts of two physiographic provinces: the Valley and Ridge Province to the east of Peters Mountain, and the Appalachian Plateau Province to the west of Peters Mountain. This study...
Authors
Mark D. Kozar, Daniel H. Doctor, William K. Jones, Nathan Chien, Cheyenne E. Cox, Randall C. Orndorff, David J. Weary, Mitchell R. Weaver, Mitchell A. McAdoo, Mercer Parker
By
Virginia and West Virginia Water Science Center

Assessment of prerestoration water quality in the Herring River to support adaptive management at the Cape Cod National Seashore Assessment of prerestoration water quality in the Herring River to support adaptive management at the Cape Cod National Seashore

In 2020 and 2021, the U.S. Geological Survey, Cape Cod National Seashore of the National Park Service, and Friends of Herring River cooperated to assess nutrient and suspended sediment concentrations across the ocean-estuary boundary at a dike on the Herring River on Chequessett Neck Road in Wellfleet, Massachusetts, that has restricted saltwater inputs by regulating water inflow through...
Authors
Thomas G. Huntington
By
Water Resources Mission Area, New England Water Science Center

Characterizing urban heat islands across 50 major cities in the United States Characterizing urban heat islands across 50 major cities in the United States

Urban development and associated land-cover and land-use change alters the environment. The continued increase of developed land changes the Earth’s ecosystems and affects the resources provided to society. During the last 40 years, urban population in the United States has increased by more than 6.3 percent, and more than 80 percent of the U.S. population resides in urban areas. One of...
Authors
George Z. Xian
By
Earth Resources Observation and Science (EROS) Center

Assessing the use of long-term lek survey data to evaluate the effect of landscape characteristics and wind facilities on sharp-tailed grouse lek dynamics in North Dakota and South Dakota Assessing the use of long-term lek survey data to evaluate the effect of landscape characteristics and wind facilities on sharp-tailed grouse lek dynamics in North Dakota and South Dakota

The contribution of renewable energy to meet worldwide demand continues to grow. In the United States, wind energy is one of the fastest growing renewable energy sectors. Throughout the Great Plains of the United States, wind facilities often are placed in open landscapes of high-elevation grasslands, and those same habitats support sharp-tailed grouse (Tympanuchus phasianellus), a...
Authors
Jill A. Shaffer, Deborah A. Buhl, Wesley E. Newton
By
Ecosystems Mission Area, Northern Prairie Wildlife Research Center

Delineating spatial units for coregonine conservation, restoration, and stewardship Delineating spatial units for coregonine conservation, restoration, and stewardship

No abstract available.
Authors
Amanda Susanne Ackiss, Ralph Grundel, Jory L. Jonas, Naomi Jones, Trevor J. Krabbenhoft, Ryan Lauzon, Nicholas E. Mandrak, Brian O’Malley, Devon Pearse, Thomas C. Pratt, Breanna Redford, Mark Ridgway, Jason Smith, Andrew M. Muir
By
Ecosystems Mission Area, Great Lakes Science Center
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