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.

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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.

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Regions L2 Landing Page Tabs

Filter Total Items: 1,126
Date published: October 7, 2019
Status: Active

Groundwater Availability and Use

The USGS Pennsylvania Water Science Center helps water providers assess the availability of groundwater for use in homes, on farms, and in industrial activities. 

Contacts: Brandon Fleming
Date published: September 23, 2019
Status: Active

Critical Mineral Recovery Potential from Tailings and Other Mine Waste Streams

The primary objectives of this one-year scoping project are to determine the feasibility of extracting byproduct mineral commodities, such as critical minerals, from mine tailings. We plan to analyze the existing data and reports from an active mine site on the composition of their mill tailings pile, and collect preliminary reconnaissance samples to identify appropriate analytical techniques...

Contacts: Robert R Seal
Date published: September 17, 2019
Status: Active

Eighteenmile Creek Area of Concern Fish Community Assessment

Background: Eighteenmile Creek was designated as an Area of Concern (AOC) in 1985 because water quality and bed sediments were contaminated by past industrial and municipal discharges, waste disposal, and pesticide usage. Five Beneficial Use Impairments (BUIs) were identified in the Eighteenmile Creek AOC, including BUI #3 - the degradation of fish and wildlife populations. The remedial action...

Date published: September 5, 2019
Status: Active

Status of American Eel populations in the Mohawk River Basin

Background: The waters of the Mohawk River basin are inhabited by one of the richest fish communities on the East Coast. The American Eel, Anguilla rostrata, is a unique member of this community, exhibiting a catadramous (maturing in fresh water and spawning in salt water) life history. Like many migratory fish, the American Eel has suffered a general decline across the East Coast largely...

Date published: August 30, 2019
Status: Active

DISCOVRE: Diversity, Systematics and Connectivity of Vulnerable Reef Ecosystems

DISCOVRE (DIversity, Systematics and COnnectivity of Vulnerable Reef Ecosystems) is an integrated, multidisciplinary, international effort investigating the unique and fragile deep-sea coral environments from the microscopic level to the ecosystem level. 

Date published: August 8, 2019
Status: Active

Track down survey of PCBs in three tributaries to the Niagara River Area of Concern (AOC)

Background Industrial discharges of toxic and bio-accumulating compounds to the Niagara River and its tributaries have occurred over many decades. High concentrations of polychlorinated biphenyls (PCBs) have been found in samples of fish tissue from many locations, including three tributaries to the Niagara River: Tonawanda Creek, Two mile Creek, and Rattlesnake Creek (study reaches listed in...

Contacts: Barry P Baldigo, David Alvarez, Ph.D., Mark Filipski
Date published: August 8, 2019
Status: Active

Pennsylvania Statewide Surface Water-Quality Monitoring Network - Per- and polyfluoroalkyl Substances Sampling Preparation

In partnership with Pennsylvania Department of Environmental Protection and Susquehanna River Basin Commission, rigorous and innovative PFAS sampling techniques were created for low-level detections.

Contacts: Joe Duris, Lee Eicholtz, Josh Lookenbill
Date published: July 24, 2019
Status: Active

Passage Technologies for American Eels

The American eel (Anguilla rostrata) migrates into freshwater in the juvenile (glass eel and elver) stage, feeds and grows in freshwater habitats, and migrates downstream to the ocean to spawn as an adult. Migrating eels frequently encounter barriers in river environments, primarily in the form of dams, that limit access of juveniles to upstream growth habitat, and can injure or kill...

Date published: July 24, 2019
Status: Active

New England WSC Seminar series Barclay 20190724

Groundwater discharge zones supply baseflow, provide critical thermal refugia for aquatic organisms, and serve as point sources of nutrients and contaminants to aquatic ecosystems. Despite their importance, the spatial distribution and the water quality effects of groundwater discharge zones across river networks are seldom predicted at regional scales due to the highly spatially heterogeneous...

Contacts: Janet Barclay
Date published: July 24, 2019
Status: Active

À propos des marqueurs auxiliaires

Beaucoup de chercheurs utilisent d’autres marqueurs auxiliaires (bagues de couleur, colliers, émetteurs radio, banderoles et autres marqueurs) avec les bagues fédérales afin de leur permettre d’identifier un individu à distance. Pour utiliser ces marqueurs, les chercheurs doivent avoir les permis fédéraux nécessaires et les autorisations additionnelles de marqueurs auxiliaires. Voir les...

Date published: July 24, 2019
Status: Active

Acerca de los Marcadores Auxiliares

Muchos investigadores usan otros marcadores auxiliares (anillos de color para las patas, collares, transmisores de radio, banderas y etiquetas) junto con anillos federales para permitirles identificar aves de manera individual a distancia. Para usar cualquiera de estos marcadores auxiliares, los investigadores deben tener permisos federales de anillamiento y una autorización de marcaje...

Date published: July 23, 2019
Status: Active

Identification de bagues inhabituelles

La plupart des bagues trouvées sur les oiseaux autres que les bagues fédérales et marqueurs auxiliaires ne devraient pas être rapportées au Laboratoire de baguage des oiseaux. Les exceptions sont les bagues internationales. Les bagues internationales et autre bagues sont sur cette liste avec une indication générale d’où elles peuvent être enregistrées.

Filter Total Items: 494
Date published: March 18, 2020

Seismic Reflection, Boomer profile images collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior,during USGS field activity 2018-043-FA, (PNG Images)

In September 2018, the USGS Woods Hole Coastal and Marine Science Center (WHCMSC), in collaboration with the US Army Corps of Engineers (USACE), conducted high-resolution geophysical mapping and sediment sampling to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “st

Date published: March 18, 2020

Seismic Reflection, Boomer shot points collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, during USGS field activity 2018-043-FA, (CSV text and Esri point shapefile, GCS WGS 84)

In September 2018, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, conducted high-resolution geophysical mapping and sediment sampling to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “stamp sands,” were dumped into the lake in

Date published: March 18, 2020

Seismic Reflection, EdgeTech SB-424 Chirp profile images collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, during USGS field activity 2018-043-FA, (PNG Images)

In September 2018, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, conducted high-resolution geophysical mapping and sediment sampling to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “stamp sands,” were dumped into the lake in

Date published: March 18, 2020

Seismic Reflection, EdgeTech SB-424 Chirp tracklines collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior during USGS field activity 2018-043-FA, (Esri polyline shapefile, GCS WGS 84)

In September 2018, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, conducted high-resolution geophysical mapping and sediment sampling to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “stamp sands,” were dumped into the lake in

Date published: March 18, 2020

Vertical chemical profiles collected across haloclines in the water column of the Ox Bel Ha cave network within the coastal aquifer of the Yucatan Peninsula in January 2015 and January 2016

Natural cave passages penetrating a coastal aquifer in the Yucatan Peninsula (Mexico) were accessed to test the hypothesis that chemoclines associated with salinity gradients (haloclines) within the flooded cave networks of the karst subterranean estuary are sites of methane oxidation. Two field trips were carried out to the fully-submerged cave system located 6.6 km inland from the coast

Date published: March 18, 2020

Seismic Reflection, boomer tracklines collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, during USGS field activity 2018-043-FA, (Esri polyline shapefile, GCS WGS 84)

In September 2018, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, conducted high-resolution geophysical mapping and sediment sampling to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “stamp sands,” were dumped into the lake in

Date published: March 18, 2020

Multibeam bathymetric trackline data collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior during USGS Field Activity 2018-043-FA using a dual-head Reson T20-P multibeam echosounder (Esri polyline shapefile, Geographic, WGS 84).

In September 2018, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, conducted high-resolution geophysical mapping and sediment sampling to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “stamp sands,” were dumped into the lake in

Date published: March 18, 2020

Seismic Reflection, EdgeTech SB-424 Chirp shot points collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior during USGS field activity 2018-043-FA, (CSV text and Esri point shapefile, GCS WGS 84)

In September 2018, the USGS Woods Hole Coastal and Marine Science Center (WHCMSC), in collaboration with the US Army Corps of Engineers (USACE), conducted high-resolution geophysical mapping and sediment sampling to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “st

Date published: March 18, 2020

Sediment sample locations and analysis collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior during USGS Field Activity 2018-043-FA (Microsoft Excel file).

In September 2018, the USGS Woods Hole Coastal and Marine Science Center (WHCMSC), in collaboration with the US Army Corps of Engineers (USACE), conducted high-resolution geophysical mapping and sediment sampling to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “st

Date published: March 12, 2020

Quality-assurance points, Morris Lake (Newton Reservoir), New Jersey, 2018

This dataset contains the point depth measurements used for quality assurance of the bathymetric survey of Morris Lake conducted in April 2018.

Date published: March 12, 2020

Water surface elevation time series for Morris Lake (Newton Reservoir), New Jersey, April 23 and 24, 2018

This dataset contains time series of water surface elevations for Morris Lake during a bathymetric survey of Morris Lake conducted in April 2018.

Date published: March 12, 2020

Data on well characteristics and well-pair characteristics for estimating high groundwater levels in selected areas of Massachusetts

A method to estimate the probable high groundwater level in Massachusetts, excluding Cape Cod and the Islands was developed in 1981. The method, commonly called the “Frimpter Method,” uses a groundwater measurement from a test site, groundwater measurements from an index well, and a distribution of high groundwater levels from wells in similar geologic and topographic se

Filter Total Items: 16,168
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Year Published: 2021

Using decision science for monitoring threatened western snowy plovers to inform recovery

Western Snowy Plovers (Charadrius nivosus nivosus) are federally listed under the US Endangered Species Act as Threatened. They occur along the US Pacific coastline and are threatened by habitat loss and destruction and excessive levels of predation and human disturbance. Populations have been monitored since the 1970s for distribution,...

Marcot, Bruce G.; Lyons, James; Elbert, Daniel C; Todd, Laura

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Year Published: 2021

Re‐purposing groundwater flow models for age assessments: Important characteristics

Groundwater flow model construction is often time‐consuming and costly, with development ideally focused on a specific purpose, such as quantifying well capture from water bodies or providing flow fields for simulating advective transport. As environmental challenges evolve, the incentive to re‐purpose existing groundwater flow models may increase...

Juckem, Paul F.; Starn, J. Jeffrey

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Year Published: 2021

The role of hydrates, competing chemical constituents, and surface composition on CLNO2 formation

Atomic chlorine (Cl•) affects air quality and atmospheric oxidizing capacity. Nitryl chloride (ClNO2) – a common Cl• source–forms when chloride-containing aerosols react with dinitrogen pentoxide (N2O5). A recent study showed that saline lakebed (playa) dust is an inland source of particulate chloride (Cl–) that generates high ClNO2. However...

Royer, Haley M.; Mitroo, Dhruv; Hayes, Sarah M.; Haas, Savannah; Pratt, Kerri A; Blackwelder, Patricia; Gill, Thomas E.; Gaston, Cassandra J.

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Year Published: 2021

Cloud-native repositories for big scientific data

Scientific data have traditionally been distributed via downloads from data server to local computer. This way of working suffers from limitations as scientific datasets grow toward the petabyte scale. A “cloud-native data repository,” as defined in this article, offers several advantages over traditional data repositories—performance, reliability...

Abernathey, Ryan; Augspurger, Tom; Banihirwe, Anderson; Blackmon-Luca, Charles C.; Crone, Timothy; Gentemann, Chelle; Hamman, Joseph; Henderson, Naomi; Lepore, Chiara; McCaie, Theo; Robinson, Niall; Signell, Richard P.

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Year Published: 2021

Phylogeographic genetic diversity in the white sucker hepatitis B Virus across the Great Lakes Region and Alberta, Canada

Hepatitis B viruses belong to a family of circular, double-stranded DNA viruses that infect a range of organisms, with host responses that vary from mild infection to chronic infection and cancer. The white sucker hepatitis B virus (WSHBV) was first described in the white sucker (Catostomus commersonii), a freshwater teleost, and belongs to the...

Adams, Cynthia R; Blazer, Vicki S.; Sherry, Jim; Cornman, Robert S.; Iwanowicz, Luke R.

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Year Published: 2021

Computational methodology to analyze the effect of mass transfer rate on attenuation of leaked carbon dioxide in shallow aquifers

Exsolution and re-dissolution of CO2 gas within heterogeneous porous media are investigated using experimental data and mathematical modeling. In a set of bench-scale experiments, water saturated with CO2 under a given pressure is injected into a 2-D water-saturated porous media system, causing CO2 gas to exsolve and migrate upwards...

Fucik, Radek; Solovsky, Jakub; Plampin, Michelle R.; Wu, Hao; Mikyska, Jiri; Illangasekare, Tissa H.

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Year Published: 2021

Environmental and anthropogenic drivers of contaminants in agricultural watersheds with implications for land management

If not managed properly, modern agricultural practices can alter surface and groundwater quality and drinking water resources resulting in potential negative effects on aquatic and terrestrial ecosystems. Exposure to agriculturally derived contaminant mixtures has the potential to alter habitat quality and negatively affect fish and other aquatic...

Smalling, Kelly; Devereux, Olivia H.; Gordon, Stephanie; Phillips, Patrick J.; Blazer, Vicki S.; Hladik, Michelle; Kolpin, Dana W.; Meyer, Michael T.; Sperry, Adam; Wagner, Tyler

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Year Published: 2021

Export of photolabile and photoprimable dissolved organic carbon from the Connecticut River

Dissolved organic carbon (DOC) impacts water quality, the carbon cycle, and the ecology of aquatic systems. Understanding what controls DOC is therefore critical for improving large-scale models and best management practices for aquatic ecosystems. The two main processes of DOC transformation and removal, photochemical and microbial DOC...

Yoon, B.; Hosen, Jacob D.; Kyzivat, Ethan; Fair, Jennifer H; Weber, Lisa C.; Aho, Kelly S.; Lowenthal, Rachel; Matt, Serena; Sobczak, W. V.; Shanley, James B.; Morrison, Jonathan; Saiers, James E.; Stubbins, Aron; Raymond, Peter A.

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Year Published: 2021

Integrating sequence capture and restriction-site associated DNA sequencing to resolve recent radiations of pelagic seabirds

The diversification of modern birds has been shaped by a number of radiations. Rapid diversification events make reconstructing the evolutionary relationships among taxa challenging due to the convoluted effects of incomplete lineage sorting (ILS) and introgression. Phylogenomic data sets have the potential to detect patterns of phylogenetic...

Ferrer Obiol, Joan; James, Helen F.; Chesser, R. Terry; Bretagnolle, Vincent; González-Solís, Jacob; Rozas, Julio; Riutort, Marta; Welch, Andreanna J.

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Year Published: 2021

Water-level conditions in the confined aquifers of the New Jersey Coastal Plain, 2013

The Coastal Plain aquifers of New Jersey provide an important source of water for more than 3.5 million people. In 2013, groundwater withdrawals from 10 confined aquifers of the New Jersey Coastal Plain totaled about 190 million gallons per day. Steadily increasing withdrawals from the late 1800s to the early 1990s resulted in declining water...

Gordon, Alison D.; Carleton, Glen B.; Rosman, Robert
Gordon, A.D., Carleton, G.B., and Rosman, R., 2021, Water-level conditions in the confined aquifers of the New Jersey Coastal Plain, 2013: U.S. Geological Survey Scientific Investigations Report 2019–5146, 104 p., 9 pl., https://doi.org/10.3133/sir20195146.

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Year Published: 2021

Multi-region assessment of chemical mixture exposures and predicted cumulative effects in USA wadeable urban/agriculture-gradient streams

Chemical-contaminant mixtures are widely reported in large stream reaches in urban/agriculture-developed watersheds, but mixture compositions and aggregate biological effects are less well understood in corresponding smaller headwaters, which comprise most of stream length, riparian connectivity, and spatial biodiversity. During 2014–2017,...

Bradley, Paul; Journey, Celeste A.; Romanok, Kristin; Breitmeyer, Sara; Button, Daniel T.; Carlisle, Daren M.; Huffman, Bradley; Mahler, Barbara; Nowell, Lisa H.; Qi, Sharon L.; Smalling, Kelly; Waite, Ian R.; Van Metre, Peter C.
Attribution: California Water Science Center, Colorado Water Science Center, Maryland-Delaware-D.C. Water Science Center, New Jersey Water Science Center, Ohio-Kentucky-Indiana Water Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, South Atlantic Water Science Center (SAWSC), Water Resources, Region 1: North Atlantic-Appalachian, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Region 3: Great Lakes, Region 4: Mississippi Basin, Region 5: Missouri Basin, Region 6: Arkansas-Rio Grande-Texas-Gulf, Region 7: Upper Colorado Basin, Region 8: Lower Colorado Basin, Region 9: Columbia-Pacific Northwest, Region 10: California-Great Basin, Region 11: Alaska, Region 12: Pacific Islands (American Samoa, Hawaii, Guam, Commonwealth of the Northern Mariana Islands), United States of America

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Year Published: 2021

Modeling estrogenic activity in streams throughout the Potomac and Chesapeake Bay watersheds

Endocrine-disrupting compounds (EDCs), specifically estrogenic endocrine-disrupting compounds, vary in concentration and composition in surface waters under the influence of different landscape sources and landcover gradients. Estrogenic activity in surface waters may lead to adverse effects in aquatic species at both individual and population...

Gordon, Stephanie; Jones, Daniel K.; Blazer, Vicki S.; Iwanowicz, Luke R.; Williams, Brianna; Smalling, Kelly

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​​​​​​​Surveyors Road
March 6, 2020

​​​​​​​Surveyors Road

Photo Contest Winner | March 2020 | People
Surveyors Road

Scientist on research vessel prepares to launch hydrophone
March 5, 2020

Scientist launches instrument used to map seafloor off Puerto Rico

USGS marine technician Wayne Baldwin prepares to deploy the hydrophone array during a seismic research cruise off the southwest coast of Puerto Rico on board the R/V Sultana in March 2020.

Marine technician deploy a hydrophone off Puerto Rico
March 5, 2020

USGS marine technicians launch a hydrophone off Puerto Rico seafloor

USGS marine technicians Alex Nichols (L) and Eric Moore (R) deploy the hydrophone array on a seismic research cruise off the southwest coast of Puerto Rico aboard the R/V Sultana in March 2020.

USGS technicians launch "sparker" used in seafloor mapping
March 5, 2020

Three scientists launch a "sparker" used in seafloor mapping

USGS research geologist Jason Chaytor (L) and marine technicians Alex Nichols (center) and Eric Moore (R) deploy the “sparker” sound source on a seismic research cruise off the southwest coast of Puerto Rico aboard the R/V Sultana in March 2020.

​​​​​​​Daniel Skulski conducting PFAS collection
March 2, 2020

​​​​​​​Daniel Skulski conducting PFAS collection

Photo Contest Winner | March 2020 | Honorable Mention 2
Daniel Skulski conducting PFAS collection

March 1, 2020

Pollen Laboratory Research at the FBGC

The USGS Florence Bascom Geoscience Center (FBGC) is at the leading edge of scientific research addressing critical societal issues and providing unbiased data and information to decision makers and the public. This video highlights the pollen laboratory

March 1, 2020

Karst Hazards Research at USGS Florence Bascom Geoscience Center (AD)

The Florence Bascom Geoscience Center conducts geologic research using digital elevation models to map karst systems and sinkhole hazards in the United States. Understanding these complex geologic systems helps to inform land use planning and development decisions. The

March 1, 2020

Paleoecology and Ecosystem Restoration Science at the FBGC

This video highlights paleoecology and ecosystems restoration science being conducted by the USGS Florence Bascom Geoscience Center (FBGC). The video provides a brief introduction to how scientists research questions of freshwater availability and

March 1, 2020

Pollen Laboratory Research at the FBGC (AD)

The USGS Florence Bascom Geoscience Center (FBGC) is at the leading edge of scientific research addressing critical societal issues and providing unbiased data and information to decision makers and the public. This video highlights the pollen laboratory

March 1, 2020

Karst Hazards Research at the USGS Florence Bascom Geoscience Center

The Florence Bascom Geoscience Center conducts geologic research using digital elevation models to map karst systems and sinkhole hazards in the United States. Understanding these complex geologic systems helps to inform land use planning and development decisions. The 

March 1, 2020

Geologic Mapping at the USGS Florence Bascom Geoscience Center (AD)

The USGS Florence Bascom Geoscience Center (FBGC) is at the leading edge of scientific research addressing critical societal issues and providing unbiased data and information to decision makers and the public. This video highlights geologic framework

March 1, 2020

USGS Florence Bascom Geoscience Center - Who we are (AD)

The USGS Florence Bascom Geoscience Center (FBGC) is at the leading edge of scientific research addressing critical societal issues and providing unbiased data and information to decision makers and the public. This video highlights the scientists, staff, labs, and fieldwork conducted by the FBGC with the goal of providing unbiased scientific information to the public.

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The audience listens in as Chris Swezey talks about his current project
May 20, 2019

This year, the Florence Bascom Geoscience Center is proud to announce it's first annual Big Science Blowout. Team members will have the opportunity to share abstacts they have presented at various conferences over the past year. 

When: 23 May 2019, 9:00AM - 3:00PM EST

Where: Doug Rankin Memorial Map Compilation Room and Presentation Center (Room 3C129)

Map of New York state at Lake Ontario with markers for elevation gages
May 6, 2019

Extreme flooding on Lake Ontario can result in millions of dollars in damages to shoreline properties. Currently, USGS Lake Ontario gages report elevations around 247.8 ft above International Great Lakes Datum of 1985; a foot below record flood elevations observed in 2017. During 2017, wind-driven waves pounded the shoreline, causing widespread damage to infrastructure, homes, and businesses.

Neal Craig Technology demonstration at the OKI 2019 cooperator meeting
May 1, 2019

The USGS Kentucky office hosted their third annual cooperator meeting on April 18, 2019 and the Indiana office hosted their second cooperator meeting on April 23, 2019.  OKI Staff gave presentations and technolgy demonstrations for an audience of local, state, and federal cooperators and USGS staff.

The USGS Ohio office will host their first cooperator meeting in 2020.

Photo of two of the partners involved in the Africa Groundwater Study
April 23, 2019

USGS International study promotes groundwater sustainability using innovative science and technology transfer

map of northeastern U.S. with clusters of 3 colored dots and a smaller bar graph
April 9, 2019

Maximum likelihood logistic regression (MLLR) is used to estimate drought probabilities for selected Northeast rivers and streams. Winter streamflows are used to estimate the chance of hydrologic drought during summer months. This application allows the display and query of these drought streamflow probabilities for Northeastern streams.

Bald eagle flying over water
April 5, 2019

Since the ban of DDT, bald eagle populations have rebounded to near-historic levels and aircraft strikes have increased since 1998. Wildlife-aircraft strikes are expensive and the large body size of the bald eagle increases the likelihood of aircraft damage and human injury when a collision occurs.

Ohio-Kentucky-Indiana Newsletter Logo
March 27, 2019

Science highlights included in this issue are Mobile SuperGage Float Trip, “River stage” does not necessarily
mean “River depth”, Interagency Workshop to Develop Predictive Models for Recreational and Drinking-Water Treatment Plant Sites, Introducing The Next Generation of USGS Water Data for the Nation, and Streamgage Changes to the Ohio-Kentucky-Indiana Monitoring Network. 

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