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Reports

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: 84803

Dissolved methane in New York groundwater, 1999-2011 Dissolved methane in New York groundwater, 1999-2011

New York State is underlain by numerous bedrock formations of Cambrian to Devonian age that produce natural gas and to a lesser extent oil. The first commercial gas well in the United States was dug in the early 1820s in Fredonia, south of Buffalo, New York, and produced methane from Devonian-age black shale. Methane naturally discharges to the land surface at some locations in New York...
Authors
William M. Kappel, Elizabeth A. Nystrom

Radioisotopic data of sediment collected in Mobile and Bon Secour Bays, Alabama Radioisotopic data of sediment collected in Mobile and Bon Secour Bays, Alabama

The focus of this study was to determine the extent of natural and (or) anthropogenic impacts on the sedimentary records of Mobile and Bon Secour Bays, Alabama during the last 150 years. These bays are unique in that anthropogenic activities are generally widespread and span both the eastern and western shorelines. However, there is a clear distinction in the types of human development...
Authors
Marci E. Marot, Christopher G. Smith

U.S. Department of the Interior South Central Climate Science Center U.S. Department of the Interior South Central Climate Science Center

On September 14, 2009, the Secretary of the Interior signed a Secretarial Order (No. 3289) entitled, "Addressing the Impacts of Climate Change on America's Water, Land, and Other Natural and Cultural Resources." The Order effectively established the U.S. Department of the Interior (DOI) Climate Science Centers (CSCs) for the purpose of integrating DOI science and management expertise...
Authors
Allison A. Shipp

Demographics and run timing of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, 2011 Demographics and run timing of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, 2011

Executive Summary Data from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their...
Authors
David A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. Harris

User’s guide and metada for the PICES Nonindigenous Species Information System User’s guide and metada for the PICES Nonindigenous Species Information System

Introduction Welcome to the PICES Nonindigenous Species Information System, a Microsoft Access database that displays the biogeographic distributions, invasion status, vectors, and key life history attributes of the approximately 740 reported nonindigenous species (NIS) in the estuarine and near-coastal habitats of the North Pacific and Hawaii. This database was developed by the U.S
Authors
Lee, Deborah A. Reusser, Katharine Marko, Marla Ranelletti

Atlas of nonindigenous marine and estuarine species in the North Pacific Atlas of nonindigenous marine and estuarine species in the North Pacific

Executive Summary Marine and estuarine nonindigenous species (NIS) are found across the world’s oceans, and designing effective management strategies to mitigate this economic, ecological and human health threat requires a basic understanding of the existing invasion patterns at regional to global scales. However, to date, syntheses at ocean basin scales have essentially been nonexistent...
Authors
Lee, Deborah A. Reusser

2010 Monitoring and Tracking Wet Nitrogen Deposition at Rocky Mountain National Park 2010 Monitoring and Tracking Wet Nitrogen Deposition at Rocky Mountain National Park

No abstract available.
Authors
Kristi H. Morris, M. Alisa Mast, David W. Clow, Gregory A. Wetherbee, Jill S. Baron, Curt Taipale, David Gay, Eric Richer

A climate trend analysis of Mali A climate trend analysis of Mali

This brief report, drawing from a multi-year effort by the U.S. Agency for International Development (USAID) Famine Early Warning Systems Network (FEWS NET), identifies modest declines in rainfall, accompanied by increases in air temperatures. These analyses are based on quality-controlled station observations. Conclusions: * Summer rains have remained relatively steady for the past 20...
Authors
Christopher C. Funk, Jim Rowland, Alkhalil Adoum, Gary Eilerts, Libby White

Bathymetry and acoustic backscatter-outer mainland shelf, eastern Santa Barbara Channel, California Bathymetry and acoustic backscatter-outer mainland shelf, eastern Santa Barbara Channel, California

In 2010 and 2011, scientists from the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center (PCMSC), acquired bathymetry and acoustic-backscatter data from the outer shelf region of the eastern Santa Barbara Channel, California. These surveys were conducted in cooperation with the Bureau of Ocean Energy Management (BOEM). BOEM is interested in maps of hard-bottom...
Authors
Peter Dartnell, David P. Finlayson, Andrew C. Ritchie, Guy R. Cochrane, Mercedes D. Erdey

Surface-water salinity in the Gunnison River Basin, Colorado, water years 1989 through 2007 Surface-water salinity in the Gunnison River Basin, Colorado, water years 1989 through 2007

Elevated levels of dissolved solids in water (salinity) can result in numerous and costly issues for agricultural, industrial, and municipal water users. The Colorado River Basin Salinity Control Act of 1974 (Public Law 93-320) authorized planning and construction of salinity-control projects in the Colorado River Basin. One of the first projects was the Lower Gunnison Unit, a project to...
Authors
Keelin R. Schaffrath

Flux of nitrogen, phosphorus, and suspended sediment from the Susquehanna River Basin to the Chesapeake Bay during Tropical Storm Lee, September 2011, as an indicator of the effects of reservoir sedimentation on water quality Flux of nitrogen, phosphorus, and suspended sediment from the Susquehanna River Basin to the Chesapeake Bay during Tropical Storm Lee, September 2011, as an indicator of the effects of reservoir sedimentation on water quality

Concentrations of nitrogen, phosphorus, and suspended sediment are measured at the U.S. Geological Survey streamgage at Conowingo Dam at the downstream end of the Susquehanna River Basin in Maryland, where the river flows into the Chesapeake Bay. During the period September 7-15, 2011, in the aftermath of Tropical Storm Lee, concentrations of these three constituents were among the...
Authors
Robert M. Hirsch

Status and limiting factors of two rare plant species in dry montane communities of Hawai`i Volcanoes National Park. Status and limiting factors of two rare plant species in dry montane communities of Hawai`i Volcanoes National Park.

Two rare plants native to montane dry forests and woodland communities of Hawai`i Volcanoes National Park (HAVO) were studied for more than two years to determine their stand structure, short-term mortality rates, patterns of reproductive phenology, success of fruit production, floral visitor composition, seed germination rates in the greenhouse, and survival of both natural and planted...
Authors
Linda W. Pratt, Joshua R. VanDeMark, Melody Euaparadorn
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