Unified Interior Regions

Region 1: North Atlantic-Appalachian

February Photo Contest

February Photo Contest

Check out the winning photographs in the February 2020 Photo Contest! Categories include People, USGS at Work, Where We Work, and Honorable Mention

See the photos!

Regions L2 Landing Page Tabs

Filter Total Items: 778
Map showing Warren County Virginia
Date Published: August 19, 2008

Warren County Non-Carbonate Aquifer Appraisal

The non-carbonate aquifer system is present over an extensive region of the Northern Shenandoah Valley and is increasingly being relied upon to supply water to local communities. This is an area with an expanding economy and a growing population, and, to meet future water needs, this aquifer is likely to be developed to supplement current withdrawals from both the carbonate aquifer system and...

Two USGS Men in Boat
Date Published: January 16, 2008
Status: Active

USGS summarizes information about the Chesapeake Bay and implications for ecosystem management (USGS Circular 1316)

The USGS released the Circular 1316: “Synthesis of U.S. Geological Survey Science for the Chesapeake Bay Ecosystem and Implications for Environmental Management”

Clark County Aquifer Appraisal Spout Run Image
Date Published: September 30, 2007
Status: Active

Clark County Aquifer Appraisal

The objective of this study is to better characterize the aquifer systems in the Northern Shenandoah Valley and provide relevant hydrogeologic information that can be used to guide the development and management of these water resources in Clarke County.

Virginia Coastal Plain GIS Project Map
Date Published: July 22, 2007

Virginia Coastal Plain GIS Project

The USGS, with cooperation from the Virginia Department of Environmental Quality and the Hampton Roads Planning District Commission, is involved in several related and on-going regional projects directed at better characterization of this important resource. The large amount of information needed for these projects requires the development and integration of a Geographic Information System (...

Chesapake Bay Watershed Satellite Image.
Date Published: June 22, 2007

River Input Monitoring

The objective of this study is to provide concentrations and estimates of loads and trends of suspended solids, nitrogen, phosphorus, and other selected constituents at the James, Rappahannock, Appomattox, Pamunkey, and Mattaponi Rivers.

Contacts: Douglas L Moyer
Chesapeake Bay Impact Crater Boundaries Map
Date Published: September 30, 2006

The Chesapeke Bay Impact Crater

The International Continental Scientific Drilling Program and the U.S. Geological Survey drilled a 1,766-m-deep test hole near the center of the Chesapeake Bay impact structure in 2005 and 2006. Learn more here:

Contacts:
USGS-Chesapeake Bay Program Watershed Model Image 1
Date Published: September 30, 2006

USGS-Chesapeake Bay Program Watershed Model

The USGS is collaborating with the Chesapeake Bay Program (CBP) to incorporate the USGS Potomac Watershed and Chesapeake Bay Virginia Watershed models into Phase 5 of the Chesapeake Bay Watershed Model (CBWM)

Grasses in Big Meadows in Shenandoah National Park Virginia
Date Published: February 22, 2006

Frederick County Carbonate Aquifer Appraisal

The objective of this study is to better characterize the carbonate aquifer system in the Northern Shenandoah Valley and provide relevant hydrogeologic information that can be used to guide the development and management of this important water resource.

Girl Drinking Water
Date Published: October 1, 2003
Status: Completed

Bacteriological quality of groundwater used for household supply

In fractured bedrock aquifers used for domestic supply conditions can exist where contaminants such as bacteria are not filtered out by the soil. Once in the fracture system, little additional filtration takes place.

The results of a synotic sampling of domestic wells in the Lower Susquehanna River basin, Pennsylvania and Maryland, showed that bacteria concentrations were higher in...

Filter Total Items: 15,543
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Year Published: 2017

Post-glacial flooding of the Bering Land Bridge dated to 11 cal ka BP based on new geophysical and sediment records

The Bering Strait connects the Arctic and Pacific oceans and separates the North American and Asian landmasses. The presently shallow ( ∼  53 m) strait was exposed during the sea level lowstand of the last glacial period, which permitted human migration across a land bridge today referred to as the Bering Land Bridge. Proxy studies (stable isotope...

Jakobsson, Martin; Pearce, Christof; Cronin, Thomas M.; Backman, Jan; Anderson, Leif G.; Barrientos, Natalia; Bjork, Goran; Coxhall, Helen; de Boer, Agatha; Mayer, Larry; Morth, Carl-Magnus; Nilsson, Johan; Rattray, Jayne; Sranne, Christian; Semiletov, Igor; O'Regan, Matt
Jakobsson, M., Pearce, C., Cronin, T. M., Backman, J., Anderson, L. G., Barrientos, N., … O'Regan, M. (2017). Post-glacial flooding of the Beringia Land Bridge dated to 11,000 cal yrs BP based on new geophysical and sediment records. Climate of the Past Discussions, 1–22

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Year Published: 2017

Rapid prototyping for decision structuring: an efficient approach to conservation decision analysis: Chapter 3

No abstract available.

Bunnefeld, Nils; Garrard, Georgia E.; Rumpff, Libby; Runge, Michael C.; Converse, Sarah J.
Garrad, G.E., Rumpff, L., Runge, M.C., and Converse, S.J., 2017, Chapter 3 - Rapid prototyping for decision structuring: an efficient approach to conservation decision analysis, in Bunnefeld, N., editor, Decision-Making in Conservation and Natural Resource Management: Models for Interdisciplinary Approaches: New York, NY, Cambridge University Press, Conservation Biology No. 22, p. 46-64.

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Year Published: 2017

Compilation of geospatial data for the mineral industries and related infrastructure of Latin America and the Caribbean

This report describes the U.S. Geological Survey’s (USGS) ongoing commitment to its mission of understanding the nature and distribution of global mineral commodity supply chains by updating and publishing the georeferenced locations of mineral commodity production and processing facilities, mineral exploration and development sites, and mineral...

Baker, Michael S.; Buteyn, Spencer D.; Freeman, Philip A.; Trippi, Michael H.; Trimmer III, Loyd M.
Baker, M.S., Buteyn, S.D., Freeman, P.A., Trippi, M.H., and Trimmer, L.M., III, 2017, Compilation of geospatial data for the mineral industries and related infrastructure of Latin America and the Caribbean: U.S. Geological Survey Open-File Report 2017–1079, 87 p., 1 geodatabase and 1 geospatial PDF map, https://doi.org/10.3133/ofr20171079.

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Year Published: 2017

Simulated groundwater flow paths, travel time, and advective transport of nitrogen in the Kirkwood-Cohansey aquifer system, Barnegat Bay–Little Egg Harbor Watershed, New Jersey

Elevated concentrations of nitrogen in groundwater that discharges to surface-water bodies can degrade surface-water quality and habitats in the New Jersey Coastal Plain. An analysis of groundwater flow in the Kirkwood-Cohansey aquifer system and deeper confined aquifers that underlie the Barnegat Bay–Little Egg Harbor (BB-LEH) watershed and...

Voronin, Lois M.; Cauller, Stephen J.
Voronin, L.M., and Cauller, S.J., 2017, Simulated groundwater flow paths, travel time, and advective transport of nitrogen in the Kirkwood-Cohansey aquifer system, Barnegat Bay–Little Egg Harbor Watershed, New Jersey: U.S. Geological Survey Scientific Investigations Report 2016–5169, 17 p., https://doi.org/10.3133/sir20165169.

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Year Published: 2017

Model selection for the North American Breeding Bird Survey: A comparison of methods

The North American Breeding Bird Survey (BBS) provides data for >420 bird species at multiple geographic scales over 5 decades. Modern computational methods have facilitated the fitting of complex hierarchical models to these data. It is easy to propose and fit new models, but little attention has been given to model selection. Here, we discuss...

Link, William A.; Sauer, John R.; Niven, Daniel
Link, W. A., Sauer, J. R, and Niven, D. K., 2017, Model selection for the North American Breeding Bird Survey: A comparison of methods: Condor, v. 119, no. 3, p. 546-556.

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Year Published: 2017

Integrating Breeding Bird Survey and demographic data to estimate Wood Duck population size in the Atlantic Flyway

The U.S. Fish and Wildlife Service (USFWS) uses data from the North American Breeding Bird Survey (BBS) to assist in monitoring and management of some migratory birds. However, BBS analyses provide indices of population change rather than estimates of population size, precluding their use in developing abundance-based objectives and limiting...

Zimmerman, Guthrie S.; Sauer, John R.; Boomer, G. Scott; Devers, Patrick K.; Garrettson, Pamela R.
Zimmerman, G. S., Sauer, J. R., Boomer, G. S., Devers, P. K., and Garrettson, P. R., 2017, Integrating Breeding Bird Survey and demographic data to estimate Wood Duck population size in the Atlantic Flyway: Condor, v. 119, no. 3, p. 616-628.

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Year Published: 2017

The first 50 years of the North American Breeding Bird Survey

The vision of Chandler (Chan) S. Robbins for a continental-scale omnibus survey of breeding birds led to the development of the North American Breeding Bird Survey (BBS). Chan was uniquely suited to develop the BBS. His position as a government scientist had given him experience with designing and implementing continental-scale surveys, his...

Sauer, John R.; Ziolkowski, David; Pardieck, Keith L.; Smith, Adam C.; Hudson, Marie-Anne R.; Rodriguez, Vicente; Berlanga, Humberto; Niven, Daniel; Link, William A.
Sauer, J. R., Pardieck, K. L., Ziolkowski, D. J., Jr., Smith, A. C., Hudson, A.-M. R., Rodriguez, V., Berlanga, H., Niven, D. K., and Link, W. A., 2017, The first 50 years of the North American Breeding Bird Survey: Condor, v. 119, no. 3, p. 576-593.

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Year Published: 2017

Rodenticide incidents of exposure and adverse effects on non-raptor birds

Interest in the adverse effects of rodenticides on birds has focused primarily on raptors. However, non-raptor birds are also poisoned (rodenticide exposure resulting in adverse effects including mortality) by rodenticides through consumption of the rodenticide bait and contaminated prey. A literature search for rodenticide incidents (evidence of...

Vyas, Nimish B.
Vyas, N. B., 2017, Rodenticide incidents of exposure and adverse effects on non-raptor birds: Science of the Total Environment, v. 609, p. 68-76.

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Year Published: 2017

Shallow marine response to global climate change during the Paleocene-Eocene Thermal Maximum, Salisbury Embayment, USA

The Paleocene-Eocene Thermal Maximum (PETM) was an interval of extreme warmth that caused disruption of marine and terrestrial ecosystems on a global scale. Here we examine the sediments, flora, and fauna from an expanded section at Mattawoman Creek-Billingsley Road (MCBR) in Maryland and explore the impact of warming at a nearshore shallow marine...

Self-Trail, Jean M.; Robinson, Marci M.; Bralower, Timothy J.; Sessa, Jocelyn A.; Hajek, Elizabeth A.; Kump, Lee R.; Trampush, Sheila M.; Willard, Debra A.; Edwards, Lucy E.; Powars, David S.; Wandless, Gregory A.
Self-Trail, J.M., et al., (2017), Shallow marine response to global climate change during the Paleocene-Eocene Thermal Maximum, Salisbury Embayment, USA, Paleoceanography, 32, doi:10.1002/2017PA003096

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Year Published: 2017

A synthesis of thresholds for focal species along the U.S. Atlantic and Gulf Coasts: A review of research and applications

The impacts from climate change are increasing the possibility of vulnerable coastal species and habitats crossing critical thresholds that could spur rapid and possibly irreversible changes. For species of high conservation concern, improved knowledge of quantitative thresholds could greatly improve management. To meet this need, we synthesized...

Powell, Emily J.; Tyrrell, Megan C.; Milliken, Andrew; Tirpak, John M.; Staudinger, Michelle D.

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Year Published: 2017

Value of information analysis as a decision support tool for biosecurity: Chapter 15

This chapter demonstrates the economic concept of ‘value of information’(VOI), and how biosecurity managers can use VOI analysis to decide whether or not to reduce uncertainty by collecting additional information through monitoring, experimentation, or some other form of research. We first explore how some uncertainties may be scientifically...

Runge, Michael C.; Rout, Tracy; Spring, Daniel; Walshe, Terry
Runge, M.C., Rout, T.M., Spring , D.A., and Walshe, T., 2017, Value of information analysis as a decision support tool for biosecurity, in Robinson, A.P., Walshe, T., Burgman, M.A., and Nunn, M., editors, Invasive Species: Risk Assessment and Management: United Kingdom, Cambridge University Press, p. 308-333.

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Year Published: 2017

Efficient processing of two-dimensional arrays with C or C++

Because fast and efficient serial processing of raster-graphic images and other two-dimensional arrays is a requirement in land-change modeling and other applications, the effects of 10 factors on the runtimes for processing two-dimensional arrays with C and C++ are evaluated in a comparative factorial study. This study’s factors include the...

Donato, David I.
Donato, D.I., 2017, Efficient processing of two-dimensional arrays with C or C++: U.S. Geological Survey Techniques and Methods Report 7–E1, 58 pages, https://doi.org/10.3133/tm7E1.

Filter Total Items: 1,034
Panoramic view of the Blue Ridge (Virginia, North Carolina and Tennessee)
October 3, 2012

Blue Ridge of Virginia, North Carolina and Tennessee

Panoramic view (~270 degrees) looking across the Blue Ridge of Virginia, North Carolina and Tennessee (from left to right).  The Valley and Ridge is in the distance (gap between mountains). 

The Piedmont and Blue Ridge provinces extend from southeastern New York to Alabama and include parts of eleven states in the Eastern U.S. and part of Washington, D.C. Blue Ridge

...
Clove Lake, Long Island water flowing under viaduct
October 1, 2012

South Side of Clove Lake at Victory Blvd., Long Island, NY

South Side of Clove Lake at Victory Blvd., Long Island, NY

Image: Massachusetts Seafloor
August 25, 2012

Massachusetts Seafloor

This photograph is of the seafloor off the Massachusetts coast and shows a sea anemone amongst gravel and cobbles. This photograph was collected as part of USGS research in collaboration with the Massachusetts Office of Coastal Zone Management to support development of the Massachusetts Ocean Management Plan and management of the state's waters.

Image: Massachusetts Seafloor
August 23, 2012

Massachusetts Seafloor

This photograph is of the seafloor off the Massachusetts coast and shows a lobster, sponges and brachiopods on cobbles and ledge covered with seaweed, bubblegum algae and red filamentous algae. This photograph was collected as part of USGS research in collaboration with the Massachusetts Office of Coastal Zone Management to support development of the Massachusetts

...
Image: Massachusetts Seafloor
August 22, 2012

Massachusetts Seafloor

This photograph is of the seafloor off the Massachusetts coast and shows sand dollars and shell fragments on a sandy seabed. This photograph was collected as part of USGS research in collaboration with the Massachusetts Office of Coastal Zone Management to support development of the Massachusetts Ocean Management Plan and management of the state's waters.

Image: Massachusetts Seafloor
August 22, 2012

Massachusetts Seafloor

This photograph is of the seafloor off the Massachusetts coast and shows sand dollars and a few shell fragments on a sandy seabed. This photograph was collected as part of USGS research in collaboration with the Massachusetts Office of Coastal Zone Management to support development of the Massachusetts Ocean Management Plan and management of the state's waters.

Image: Massachusetts Seafloor
August 21, 2012

Massachusetts Seafloor

This photograph is of the seafloor off the Massachusetts coast and shows a lobster on a sandy seabed. This photograph was collected as part of USGS research in collaboration with the Massachusetts Office of Coastal Zone Management to support development of the Massachusetts Ocean Management Plan and management of the state's waters.

brown pipe with cap sticking up out of ground covered with green brush with a brown house on a hill in the background
August 21, 2012

Groundwater well

New York groundwater well

USGS CoreCast
August 19, 2012

A Year After the 2011 Virginia Earthquake: What More Do We Know?

A year after the August 23, 2011 Virginia earthquake, USGS geologist Dr. Mike Blanpied discusses USGS efforts currently underway to learn more about the cause of the event. Dr. Blanpied discusses how scientists are using the August 23 earthquake to inform estimates of the region's seismic hazard.

USGS CoreCast
August 19, 2012

A Year After the 2011 Virginia Earthquake: Will Shaking Continue?

A year after the August 23, 2011 Virginia earthquake, USGS geologist Dr. Mike Blanpied discusses whether a similar event could occur again in the region in the near future, and in an earthquake, what you can do to stay stay safe.

misty view of creek with flat rocks and green tree lined bank
August 7, 2012

Ketchumville Creek near Maine, New York

Ketchumville Creek near Maine, New York

man and woman wading in rocky stream carrying fish shocking equipment
July 18, 2012

Fish shocking in the West Branch of the Neversink River

Fish shocking in the West Branch of the Neversink River