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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.
Filter Total Items: 84730
Managing for tomorrow—A climate adaptation decision framework Managing for tomorrow—A climate adaptation decision framework
Climate change presents new and compounding challenges to natural resource management. With changing climate patterns, managers are confronted with difficult decisions on how to minimize climate effects on habitats, infrastructure, and wildlife populations. To support climate adaptation decision making, we first conceptualized an approach that integrates the principles of the resist...
Authors
Kristen L. Bouska, Joshua Booker, Susan C. Clark, John Delaney, Josh D. Eash, Max Post van der Burg, Heidi Roop
Benthic habitat map of Olowalu Reef, Maui, Hawaii—Geomorphological structure, biological cover, and geologic zonation determined with spectral, lidar, and acoustic data Benthic habitat map of Olowalu Reef, Maui, Hawaii—Geomorphological structure, biological cover, and geologic zonation determined with spectral, lidar, and acoustic data
The fringing coral reef off Olowalu, Maui, Hawaii, has been identified as a local conservation priority site. In 2007, the National Oceanic and Atmospheric Administration (NOAA) produced a benthic habitat map of the Hawaiian Islands that was used as a foundation for this study. To support place-based management of the reef in the future, the U.S. Geological Survey (USGS) mapped the...
Authors
Liana N. Heberer, Kristen C. Alkins, Curt D. Storlazzi, Susan A. Cochran, Ann E. Gibbs, Russell Sparks, Kristy Stone, Itana Silva, Tatiana Martinez, Cole Peralto, Arielle S. Levine, Douglas A. Stow, Jillian Maloney
Assessment of undiscovered oil and gas resources of the Los Angeles Basin Province, 2023 Assessment of undiscovered oil and gas resources of the Los Angeles Basin Province, 2023
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 61 million barrels of oil and 240 billion cubic feet of gas in the Los Angeles Basin Province.
Authors
Christopher J. Schenk, Marilyn E. Tennyson, Tracey J. Mercier, Phuong A. Le, Andrea D. Cicero, Ronald M. Drake, Sarah E. Gelman, Jane S. Hearon, Benjamin G. Johnson, Jenny H. Lagesse, Heidi M. Leathers-Miller, Kira K. Timm
Time of travel of releases from Lake Wallenpaupack to the U.S. Geological Survey’s streamgage monitoring location on the Delaware River at Montague, New Jersey Time of travel of releases from Lake Wallenpaupack to the U.S. Geological Survey’s streamgage monitoring location on the Delaware River at Montague, New Jersey
In 2016, the U.S. Geological Survey (USGS) carried out a hydraulic study within the upper Delaware River Basin for the purpose of determining the time of travel for water releases from the Brookfield Renewable U.S. hydroelectric plant at Lake Wallenpaupack, Pennsylvania, to reach the USGS streamgage located on the Delaware River at Montague, New Jersey (site number 01438500). From...
Authors
Jaclynne Polcino, John J. Trainor, Jerilyn V. Collenburg
Spatial and seasonal water-quality patterns and temporal water-quality trends in Lake Conroe on the West Fork San Jacinto River near Conroe, Texas, 1974–2021 Spatial and seasonal water-quality patterns and temporal water-quality trends in Lake Conroe on the West Fork San Jacinto River near Conroe, Texas, 1974–2021
The impoundment of Lake Conroe in 1973 created an important water resource for greater Houston, Texas. The U.S. Geological Survey, in cooperation with the San Jacinto River Authority, analyzed water-quality data collected from 1974 to 2021 at upreservoir, mid-reservoir, and downreservoir sites in Lake Conroe. Water-column and seasonal variability of selected water-quality constituents
Authors
Alexandra C. Adams
Potential effects of chronic wasting disease and supplemental feeding on elk populations in Wyoming Potential effects of chronic wasting disease and supplemental feeding on elk populations in Wyoming
Introduction In 2023, the U.S. Geological Survey, in collaboration with the U.S. Department of Agriculture Forest Service and the U.S. Fish and Wildlife Service, evaluated the costs and benefits of supplemental elk (Cervus elaphus canadensis) feeding in western Wyoming. Elk supplemental feeding is intended to maintain elk populations in the winter and limit elk damage to private property
Authors
Paul C. Cross, Todd G. Wojtowicz