Unified Interior Regions

Region 1: North Atlantic-Appalachian

Our Science Centers

Our Science Centers

The NAA Region has 15 Science Centers spanning 14 NE States and Washington, DC. The Centers conduct interdisciplinary biologic, geologic, hydrologic, and energy monitoring and research addressing natural resource issues facing our nation.

Learn More

August and September Photo Contests

August and September Photo Contests

Check out the winning photographs in the August and September 2021 Photo Contests! Categories include People, USGS at Work, Where We Work, and Honorable Mention.

See Photos

Regions L2 Landing Page Tabs

Filter Total Items: 1,126
Date published: August 6, 2015
Status: Active

Hudson River Salt-Front Monitoring Project, New York

Study area Hudson River from Hyde Park to Yonkers, N.Y. Period of project Continuous since October 1991 Problem - The location of the salt front (freshwater-saltwater interface) in the lower Hudson River basin can affect wildlife habitats and freshwater withdrawals for municipal use. Knowing the location of the salt front can help managers make informed decisions to protect the environment...

Date published: August 6, 2015
Status: Active

Hydrogeology and Surface/Groundwater Interactions in the Meads Creek Valley, Schuyler and Steuben Counties, New York

Problem - The interaction between ground water and surface water within the Meads Creek watershed is not well understood, and the need for understanding the interaction has increased in recent years because of widespread concerns related to water supply, ground- and surface-water contamination, loss of wetlands due to development; and other changes in the watershed. In addition, flooding in...

Contacts: James Reddy, Todd S Miller
Date published: August 6, 2015
Status: Active

Hydrogeologic Recharge Settings of the Carbonate-Bedrock Aquifer in Genesee County, Western New York

Problem - The New York State Departments of Environmental Conservation (NYSDEC) and Health (NYSDOH) are concerned about Problem - The New York State Departments of Environmental Conservation (NYSDEC) and Health (NYSDOH) are concerned about ground-water contamination in the carbonate-bedrock aquifers, especially relating to the inadvertent introduction of volatile organic compounds (VOCs) an...

Date published: August 6, 2015
Status: Active

Mercury concentration in water, sediment, and fish in the Neversink watershed, New York

The distribution of mercury (Hg) and sites of greatest Hg methylation are poorly understood in Catskill Mountain watersheds. Although concentrations of Hg in the water column are low, high concentrations of Hg in smallmouth bass and walleye have led to consumption advisories in most large New York City reservoirs in the Catskill Mountains. Mercury in natural waters can exist in many forms...

Date published: August 6, 2015
Status: Active

Nassau Hydrogeologic Maps

Problem - The major hydrogeologic units of Long Island, New York, have been delineated as part of the islandwide mapping effort of Smolensky, Buxton, and Shernoff that was published in 1989 as U.S. Geological Survey (USGS) Hydrologic Atlas (HA) 709. Concern about local details in the hydrogeologic framework that may not be represented in HA-709 has led the USGS, in cooperation with the U.S...

Contacts: Jack Monti
Date published: August 6, 2015
Status: Active

Response of Fish Assemblages to Changing Acid-base Chemistry in Adirondack Long Term Monitoring Lakes, 1984-2012

Background The New York State Department of Environmental Conservation (NYSDEC) and Adirondack Lakes Survey Corporation (ALSC) repeatedly surveyed fish assemblages and characterized water chemistry from 44 to 52 lakes during the periods 1984-1987 and 1994-2005, and 2008-2012 to document the regional effects of acidic deposition and potential recovery associated with the 1990 Clean Air Act...

Contacts: Barry P Baldigo, Scott George, Karen Roy, Charley Driscoll
Date published: August 6, 2015
Status: Active

Natural Resources of the Neversink River Watershed

Problem - A variety of factors potentially impact natural resources in the Neversink River basin and in other tributaries to the Upper Delaware River along the New York, Pennsylvania, and New Jersey boarders in the northeastern US. Increased urbanization within most watersheds of the Delaware River has decreased forested lands and ground permeability; fractionated forests, streams, and rivers...

Contacts: Barry P Baldigo
Date published: August 6, 2015
Status: Active

Onondaga Lake Watershed Geographic Information System

Problem - The purpose of this project is to create a watershed GIS (Geographic Information System) to support the comprehensive cleanup and restoration of Onondaga Lake that is underway. A GIS is a computer system capable of capturing, storing, analyzing, and displaying geographically referenced information; that is, data identified according to location. Given the broad scope of the Onondag...

Date published: August 6, 2015
Status: Active

Potential Recovery of Water Chemistry and Stream Biota from Reduced Levels of Acid Deposition at a Sensitive Watershed in the Catskill Mountains, New York

The Catskill Mountains of southeastern New York receive among the highest loads of acid deposition in New York and the northeastern U.S. Additionally, the Catskills are underlain by sandstone and conglomerate, which is base poor and weathers slowly. Thus, the Catskills contain numerous streams with low (< 50 µeq/L) acid-neutralizing capacity (ANC) and are sensitive to impacts from atmospher...

Date published: August 6, 2015
Status: Active

Regionalization of Channel Geomorphology Characteristics for Streams of New York State, Excluding Long Island

Problem - Geomorphologic techniques for stream channel and bank restoration are fast becoming the techniques of choice among federal, state, county, and local agencies to reduce suspended sediment loads, reduce flood damage, improve aquatic habitat, and generally stabilize stream channels. One reason for this upswing in use is that appropriate application of these techniques has been shown t...

Date published: August 6, 2015
Status: Active

The Hydrologic Benchmark Network

Summary The Hydrologic Benchmark Network (HBN) consists of 37 watersheds that provide long-term measurements of streamflow and water quality in areas that are minimally affected by human activities. In 2011 measurements of aquatic biology and soil chemistry were added to the network. All of these data are used to study long-term trends in surface water flow, water chemistry, aquatic biology,...

Date published: August 6, 2015
Status: Active

Shallow groundwater quality in the Patchogue River basin, Suffolk County, New York

Background The U.S. Geological Survey (USGS), in cooperation with the Village of Patchogue and the New York Department of State, collected water-quality samples from 10 shallow wells within the village to document the effects of onsite wastewater disposal on groundwater discharging into the Patchogue River. The onsite disposal of wastewater within the Patchogue River basin - a riverine estuary...

Contacts: Irene J Fisher
Filter Total Items: 16,199
Publication Thumbnail
Year Published: 2018

A comparative evaluation of crowding stress on muscle HSP90 and myostatin expression in salmonids

Stress is a major factor that contributes to poor production and animal welfare concerns in aquaculture. As such, a thorough understanding of mechanisms involved in the stress response is imperative to developing strategies to mitigate the negative side effects of stressors, including the impact of high stocking densities on growth. The purpose of...

Galt, Nicholas J.; Froehlich, Jacob Michael; McCormick, Stephen D.; Biga, Peggy R.
Galt, N.J., McCormick, S.D., Froehlich, J.M. and Biga, P.R. 2018. A comparative evaluation of crowding stress on muscle HSP90and myostatin expression in salmonids. Aquaculture 483: 141-148. doi: 10.1016/j.aquaculture.2017.10.019

Publication Thumbnail
Year Published: 2018

Near-surface permafrost aggradation in Northern Hemisphere peatlands shows regional and global trends during the past 6000 years

The history of permafrost aggradation and thaw in northern peatlands can serve as an indicator of regional climatic history in regions where records are sparse. We infer regional trends in the timing of permafrost aggradation and thaw in North American and Eurasian peatland ecosystems based on plant macrofossils and peat properties using existing...

Treat, Claire C.; Jones, Miriam

Publication Thumbnail
Year Published: 2018

Gas hydrate in nature

Gas hydrate is a naturally occurring, ice-like substance that forms when water and gas combine under high pressure and at moderate temperatures. Methane is the most common gas present in gas hydrate, although other gases may also be included in hydrate structures, particularly in areas close to conventional oil and gas reservoirs. Gas hydrate is...

Ruppel, Carolyn D.
Ruppel, C.D., 2018, Gas hydrate in nature: U.S. Geological Survey Fact Sheet 2017–3080, 4 p., https://doi.org/10.3133/fs20173080.

Publication Thumbnail
Year Published: 2018

The U.S. Geological Survey’s Gas Hydrates Project

The Gas Hydrates Project at the U.S. Geological Survey (USGS) focuses on the study of methane hydrates in natural environments. The project is a collaboration between the USGS Energy Resources and the USGS Coastal and Marine Geology Programs and works closely with other U.S. Federal agencies, some State governments, outside research organizations...

Ruppel, Carolyn D.
Ruppel, C.D., 2018, The U.S. Geological Survey’s Gas Hydrates Project: U.S. Geological Survey Fact Sheet 2017–3079, 4 p., https://doi.org/10.3133/fs20173079.

Publication Thumbnail
Year Published: 2018

Determining mineralogical variations of aeolian deposits using thermal infrared emissivity and linear deconvolution methods

We apply linear deconvolution methods to derive mineral and glass proportions for eight field sample training sites at seven dune fields: (1) Algodones, California; (2) Big Dune, Nevada; (3) Bruneau, Idaho; (4) Great Kobuk Sand Dunes, Alaska; (5) Great Sand Dunes National Park and Preserve, Colorado; (6) Sunset Crater, Arizona; and (7) White Sands...

Hubbard, Bernard E.; Hooper, Donald M.; Solano, Federico; Mars, John C.

Publication Thumbnail
Year Published: 2018

Migration ecology and stopover population size of Red Knots Calidris canutus rufa at Mingan Archipelago after exiting the breeding grounds

Populations of migratory birds present unique conservation challenges given the often vast distances separating critical resources throughout the annual cycle. Migration areas close to the breeding grounds represent a link between two key stages of the annual cycle, and understanding migration ecology as birds exit the breeding grounds may be...

Lyons, James E.; Baker, Allan J.; González, Patricia M.; Aubry, Yves; Buidin, Christophe; Rochepault, Yann
Lyons, J. E., Baker, A. J., Gonzalez, P. M., Aubry, Y., Buidin, C., and Rochepault, Y., 2018, Migration ecology and stopover population size of Red Knots Calidris canutus rufa at Mingan Archipelago after exiting the breeding grounds: Wader Study, v. 124, no. 3, p. 197-205. https://doi.org/10.18194/ws.00092

Publication Thumbnail
Year Published: 2018

Nutrient and metal loads estimated by using discrete, automated, and continuous water-quality monitoring techniques for the Blackstone River at the Massachusetts-Rhode Island State line, water years 2013–14

Flow-proportional composite water samples were collected in water years 2013 and 2014 by the U.S. Geological Survey, in cooperation with the Massachusetts Department of Environmental Protection, from the Blackstone River at Millville, Massachusetts (U.S. Geological Survey station 01111230), about 0.5 mile from the border with Rhode Island. Samples...

Sorenson, Jason R.; Granato, Gregory E.; Smith, Kirk P.
Sorenson, J.R., Granato, G.E., and Smith, K.P., 2018, Nutrient and metal loads estimated by using discrete, automated, and continuous water-quality monitoring techniques for the Blackstone River at the Massachusetts-Rhode Island State line, water years 2013–14: U.S. Geological Survey Scientific Investigations Report 2017–5094, 41 p., https://doi.org/10.3133/sir20175094.

Publication Thumbnail
Year Published: 2018

High resolution water body mapping for SWAT evaporative modelling in the Upper Oconee watershed of Georgia, USA

Technological improvements in remote sensing and geographic information systems have demonstrated the abundance of artificially constructed water bodies across the landscape. Although research has shown the ubiquity of small ponds globally, and in the southeastern United States in particular, their cumulative impact in terms of evaporative...

Ignatius, Amber R.; Jones, John W.

Publication Thumbnail
Year Published: 2018

Range position and climate sensitivity: The structure of among-population demographic responses to climatic variation

Species’ distributions will respond to climate change based on the relationship between local demographic processes and climate and how this relationship varies based on range position. A rarely tested demographic prediction is that populations at the extremes of a species’ climate envelope (e.g., populations in areas with the highest mean annual...

Amburgey, Staci M.; Miller, David A. W.; Grant, Evan H. Campbell; Rittenhouse, Tracy A. G.; Benard, Michael F.; Richardson, Jonathan L.; Urban, Mark C.; Hughson, Ward; Brand, Adrianne B.; Davis, Christopher J.; Hardin, Carmen R.; Paton, Peter W. C.; Raithel, Christopher J.; Relyea, Rick A.; Scott, A. Floyd; Skelly, David K.; Skidds, Dennis E.; Smith, Charles K.; Werner, Earl E.
Amburgey, S. M., Miller, D. A. W., Grant, E. H. C., Rittenhouse, T. A. G., Benard, M. F., Richardson, J. L., Urban, M. C., Hughson, W., Brand, A. B., Davis, C. J., Hardin, C. R., Paton, P. W. C., Raithel, C. J., Relyea, R. A., Scott, A. F., Skelly, D. K., Skidds, D. K., Smith, C. K., and Werner, E. E., 2018, Range position and climate sensitivity: The structure of among-population demographic responses to climatic variation: Global Change Biology, v. 24, no. 1, p. 439-454. https://doi.org/10.1111/gcb.13817

Publication Thumbnail
Year Published: 2018

Rule reversal: Ecogeographical patterns of body size variation in the common treeshrew (Mammalia, Scandentia)

There are a number of ecogeographical “rules” that describe patterns of geographical variation among organisms. The island rule predicts that populations of larger mammals on islands evolve smaller mean body size than their mainland counterparts, whereas smaller‐bodied mammals evolve larger size. Bergmann's rule predicts that populations of a...

Sargis, Eric J.; Millien, Virginie; Woodman, Neal; Olson, Link E.
Sargis, E. J., Millien, V., Woodman, N., and Olson, L. E., 2018, Rule reversal: Ecogeographical patterns of body size variation in the common treeshrew (Mammalia, Scandentia): Ecology and Evolution, v. 8, no. 3, p. 1634-1645. https://doi.org/10.1002/ece3.3682

Publication Thumbnail
Year Published: 2018

Are ranger patrols effective in reducing poaching-related threats within protected areas?

Poaching is one of the greatest threats to wildlife conservation world-wide. However, the spatial and temporal patterns of poaching activities within protected areas, and the effectiveness of ranger patrols and ranger posts in mitigating these threats, are relatively unknown.We used 10 years (2006–2015) of ranger-based monitoring data and...

Moore, Jennnifer F.; Mulindahabi, Felix; Masozera, Michel K.; Nichols, James D.; Hines, James E.; Turikunkiko, Ezechiel; Oli, Madan K.
Moore, J. F., Mulindahabi, F., Masozera, M. K., Nichols, J. D., Hines, J. E., Turikunkiko, E., and Oli, M. K., 2018, Are ranger patrols effective in reducing poaching-related threats within protected areas?: Journal of Applied Ecology, v. 55, no. 1, p. 99-107. https://doi.org/10.1111/1365-2664.12965

Publication Thumbnail
Year Published: 2018

Environmental characteristics and utilization potential of metallurgical slag

Slag, an abundant byproduct from the pyrometallurgical processing of ores, can be an environmental liability or a valuable resource. The most common environmental impact of slag is from the leaching of potentially toxic elements, acidity, or alkalinity that may impact nearby soils and surface water and groundwater. Factors that influence its...

De Vivo, Benedetto; Belkin, Harvey E.; Lima, Annamaria; Piatak, Nadine M.

Filter Total Items: 1,774
Shepaug River Peter's Dam gage pool
October 10, 2016

Shepaug River Peter's Dam gage pool

Autumnal reflection in the Shepaug River Peter's Dam gage pool looking upstream at the dam with the gage in view (site 01202501 at Woodville, CT). The blue sky and Autumn leaves cast a reflection in the gage pool.

woman standing in stream making discharge measurement
September 23, 2016

Making a discharge measurement with a flowtracker

USGS hydrologist Amy Simonson making a discharge measurement with a flowtracker in a Long Island stream.

people on beach
September 21, 2016

Field work

USGS scientists doing real time kinematic measurements with a GPS pole on intertidal section of beach.

photo of a rain gage on Long Island
September 1, 2016

Rain Gage

Rain gage on Long Island

August 26, 2016

First Days - Harlequin Ducks

This ridiculously cute video of baby Harlequin Ducks (Histrionicus histrionicus) shows their first day outside the egg (about 20 hours old). Scientists at Patuxent Wildlife Research Center are training ducks to respond to sounds — just like a hearing test given to kids during elementary school — to learn more about their ability to hear underwater. This will inform the

City Hall in Gary, Indiana
August 25, 2016

City Hall in Gary, Indiana

The City of Gary, Indiana and the Gary Sanitary District are committed to implementing green infrastructure solutions to reduce storm water inputs to their combined sewer system, with the goal of decreasing the volume of storm water to be treated. The City of Gary has installed structures to redirect storm water from the sewer system during a planned rehabilitation of the

...