United States of America

Filter Total Items: 1,181
Wire weight mounted on bridge crossing Blacks Fork, streamgage 09219200
Date Published: January 12, 2018
Status: Active

Characterization and Quantification of Salinity Loads from the Blacks Fork above Smiths Fork near Lyman, Wyoming

The Blacks Fork is a stream that contributes a salinity load to the Colorado River Basin. In order to quantify the salinity load, collection of continuous streamflow and specific conductance data, and monthly sampling for total-dissolved solids will occur from April 2018 through September 2019. Calculations of monthly and annual salinity loading from the Blacks Fork will be published in 2020...

Data-coverage map for each State of Louisiana Barrier Island Comprehensive Monitoring (BICM) task
Date Published: January 12, 2018

Barrier Island Comprehensive Monitoring

Historical and newly acquired data were used to assess and monitor changes in the aerial and subaqueous extent of islands, habitat types, sediment properties, environmental processes, and vegetation composition. Research is part of the Geologic and Morphologic Evolution of Coastal Margins...

Kawela ridge, Moloka'i, Hawaii
Date Published: January 11, 2018
Status: Active

Studies on the Rapidly Eroding Reef

This study focuses on assessing changes in vegetation cover and composition inside and outside a fenced exclosure within the USGS Ridge-to-Reef study area on the island of Moloka‘i. This information will be delivered to federal, state, and private land managers who are trying to determine best management practices to reduce erosion and sediment runoff from this dry habitat which has been...

Figure from Fact Sheet
Date Published: January 11, 2018
Status: Active

Chesapeake Bay Activities Bibliography

The USGS has published reports and journal articles on a large number of topics related to the Chesapeake Bay and its watershed. Some recent reports are online. Findings from the publications are used by Chesapeake Bay Program resource managers and policy makers to make science-based decisions for ecosystem conservation and restoration. USGS Chesapeake Bay science information is also critical...

Contacts: Scott Phillips
Breton Island, USGS oblique aerial photography (08/2013) looking south.
Date Published: January 10, 2018
Status: Active

Integrating Mapping and Modeling to Support the Restoration of Bird Nesting Habitat at Breton Island National Wildlife Refuge

In response to storms, reduced sediment supply, and sea-level rise, Breton Island is rapidly deteriorating, impacting the available nesting habitat of endangered seabirds. This study provides critical information regarding the physical environment of the island system. Research is part of the ...

Map showing the location of geophysical and sediment core data collected between 2009 and 2013, and used in the MsCIP project.
Date Published: January 10, 2018
Status: Active

Science Support for the Mississippi Coastal Improvement Project

Since 2007, the USGS (with NPS and USACE) has been mapping the seafloor and substrate around the Mississippi barrier islands to characterize the near-surface stratigraphy and identify the influence it has on island evolution and fate. Research is part of the Geologic and Morphologic...

Contacts: James Flocks
Detailed map of bathymetric data collected around Cat Island.
Date Published: January 10, 2018
Status: Active

Geologic Evolution of Cat Island, Mississippi

The geologic evolution of Cat Island has been influenced by deltaic, lagoonal/estuarine, tidal, and oceanographic processes, resulting in a complex stratigraphic record. Research is part of the Geologic and Morphologic Evolution of Coastal Margins project.

USGS boat sitting on a river with trees on bank
Date Published: January 5, 2018
Status: Completed

Hudson River Salt Front Data

Tide stage, specific conductance, water temperature, and freshwater inflow at selected Hudson River (New York) gages updated every hour. Water temperature and specific conductance are measured at a depth of 10 feet below NGVD 1929 (mean sea level). These data include PROVISIONAL DATA subject to revision.

This...

Glaciers and Snowpack Study Area
Date Published: December 21, 2017
Status: Active

Glaciers and Snowpack

Glaciers, snow, and ice sheets are important components of the Earth's water and climate. They respond to and indicate changes in climate, as well as exerting an influence on global and regional climate. They also have an effect on water resources, serving as natural reservoirs. Measuring changes in the size and volume of glaciers and snowpacks provides one direct way of knowing what kind of...

Groundwater Geochemical and Selected Volatile Organic Compound Data, Operable Unit 1, Naval Undersea Warfare Center Report Cover
Date Published: December 20, 2017
Status: Active

Navy Investigations and Technical Oversight

The U.S. Navy is conducting environmental work at various sites on Navy installations in Washington, Alaska, and other northwestern states under mandates of the CERCLA and RCRA environmental regulations. This work is generally performed by private firms under contract to the Navy, commonly focusing on small areas near specific waste-disposal or spill sites.

To assist the Navy with the...

Map of Yakima County
Date Published: December 20, 2017
Status: Active

Yakima Nitrates

The Issue: Links between nitrate application to the land surface and measured nitrate concentrations in groundwater or surface water are poorly understood in the Yakima River basin due to the variety of potential nitrate sources. Fertilizer-intensive irrigated agriculture has been prevalent in the basin for decades, and since 1994 the growth of dairy operations has resulted in numerous liquid-...