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We conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens and landscapes of the Southeastern United States and the Caribbean region.

Filter Total Items: 234
Tagging a Gulf sturgeon
Date Published: June 13, 2016
Status: Active

Preserving Gulf Sturgeon—A Fish Tale of Gargantuan Proportions

It's hard to imagine a better job than doing fieldwork with the USGS Coastal Ecology crew as they work to keep tabs on the Gulf sturgeon population.

Contacts: Michael Randall, Tania Larson
Figure 2. Approximate boundaries of Chitimacha indigenous lands. Image courtesy Native American Law
Date Published: June 2, 2016
Status: Active

A Climate Change Adaptation Plan in Response to Sea Level Rise for the Chitimacha Tribe of Louisiana

This project will create a Climate Change Adaptation Plan for the Chitimacha Tribe of Louisiana (Chitimacha), serving as an implementable plan for coastal community adaptation to climate change that can be used as a model in other small communities.

Contacts: Kathryn Spear
Caddo Lake Institute - Paddlefish Finder - Tracking Map
Date Published: June 2, 2016
Status: Active

Paddlefish Tracking Map - Visualizing U.S. Fish and Wildlife Service Tower and Boat Observational Data

Partnering with the Caddo Lake Institute, the USGS WARC Advanced Applications Team developed a web-based mapping application that visualizes the paddlefish tracking observations being collected by FWS.

Figure 2. Three Dimensional LAI Profiles.
Date Published: May 26, 2016

Mapping Marsh Structure with Polarimetric Radar: Highlighting Change in Oil Spill Impacted Marshes

While the historic focus of vegetation condition is the bulk live and dead compositions, these variables provide no information on the structure of vegetation (density and orientation). Canopy structure information is critical for monitoring status and trends, and essential in climate, weather, and ecological studies.

Bullseye snakehead (Channa marulius)
Date Published: May 23, 2016
Status: Completed

Fish Slam - Spring 2016

May 23, 2016 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), Florida Museum of Natural History (FLMNH), University of Florida (UF), and Florida International University (FIU) sampled 12 sites for non-native fishes in Broward and Miami-Dade counties in southeastern Florida.

Wading birds and shorebirds in TTINWR
Date Published: May 11, 2016
Status: Active

Impacts of Sea Level Rise & Ecosystem Restoration on Wildlife

The interior marshes of the Ten Thousand Islands National Wildlife Refuge (TTINWR) are currently negatively impacted by sea level rise through saltwater intrusion from the south which furthers mangrove encroachment into the freshwater marsh.

Live trapping of small mammals will be conducted within the PSRP footprint
Date Published: May 11, 2016
Status: Active

Assessment of Small Mammal Demographics and Communities in the Picayune Strand Restoration Area

The Picayune Strand Restoration Project (PSRP) is in the process of restoring pre-drainage hydrology to the southwest portion of the Greater Everglades ecosystem.

Small mammals make up a large proportion of python diet
Date Published: May 11, 2016
Status: Active

Assessment of Small Mammal Demographics and Communities in Everglades National Park

The decline of mammal populations in Everglades National Park (ENP) over the last 20 years is likely to influence the ecology of the Everglades system and the likelihood of successful Everglades restoration.

Satellite image of study areas
Date Published: May 11, 2016

Wildlife Indicators of Greater Everglades Restoration Progress, Climate Change, and Shifts in Ecosystem Service

As Greater Everglades restoration project implementation progresses, wetlands in near coastal areas may undergo changes in salinity, hydroperiod, and water depth.

Study sites were established near Port Fourchon, Louisiana
Date Published: May 11, 2016
Status: Active

Rate and Process of Mangrove Forest Expansion on Carbon Relations in Coastal Louisiana

Field observations over recent decades have confirmed mangrove expansion landward in tropical zones and poleward in temperate saltmarsh settings around the northern Gulf of Mexico.

Real-time kinematic GPS surveys combined with complimentary ground leveling
Date Published: May 11, 2016

Effect of Hurricane Wrack Deposition on Coastal Marsh Surface Elevation Change

Storm surge waves and tides of hurricanes have the propensity to wash up marsh detritus of dead reeds and leaf debris along with plastic trash and lumber, commonly referred to as wrack, from overwashed beaches, marshes, forests, streets, and lawns.

Joint Ecosystem Modeling (JEM)
Date Published: May 6, 2016
Status: Active

Joint Ecosystem Modeling: Greater Everglades Modeling Decision Support Tools

Ecological models are needed to facilitate evaluation and assessment of alternative approaches to restore Greater Everglades ecosystems. However, the provision of useful and accessible models is a challenge because there is often a disconnect between model developers and model users. Joint Ecosystem Modeling (JEM) was established to meet this challenge, with the goal of getting ecological...

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Year Published: 2017

Restoration of contaminated ecosystems: adaptive management in a changing climate

Three case studies illustrate how adaptive management (AM) has been used in ecological restorations that involve contaminants. Contaminants addressed include mercury, selenium, and contaminants and physical disturbances delivered to streams by urban stormwater runoff. All three cases emphasize the importance of broad stakeholder input early and...

Farag, Aida; Larson, Diane L.; Stauber, Jenny; Stahl, Ralph; Isanhart, John; McAbee, Kevin T.; Walsh, Christopher J.
Farag, A.M., Larson, D.L., Stauber, J., Stahl, R., Isanhart, J., McAbee, K., and Walsh, C.J., 2017, Restoration of contaminated ecosystems: adaptive management in a changing climate: Restoration Ecology, v. 25, no. 6, p. 884-893

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Year Published: 2017

Tree sampling as a method to assess vapor intrusion potential at a site characterized by VOC-contaminated groundwater and soil

Vapor intrusion (VI) by volatile organic compounds (VOCs) in the built environment presents a threat to human health. Traditional VI assessments are often time-, cost-, and labor-intensive; whereas traditional subsurface methods sample a relatively small volume in the subsurface and are difficult to collect within and near structures. Trees could...

Wilson, Jordan L.; Limmer, Matthew A.; Samaranayake, V.A.; Schumacher, John G.; Burken, Joel G.
Wilson, J.L., Limmer, M.A., Samaranayake, V.A., Schumacher, J.G., Burken, J.G., 2017, Tree Sampling as a Method to Assess Vapor Intrusion Potential at a Site Characterized by VOC-Contaminated Groundwater and Soil: Environmental Science and Technology, v. 51, no. 18, pp. 10369-10378. DOI: 10.1021/acs.est.7b02667.

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Year Published: 2017

FEQinput—An editor for the full equations (FEQ) hydraulic modeling system

IntroductionThe Full Equations Model (FEQ) is a computer program that solves the full, dynamic equations of motion for one-dimensional unsteady hydraulic flow in open channels and through control structures. As a result, hydrologists have used FEQ to design and operate flood-control structures, delineate inundation maps, and analyze peak-flow...

Ancalle, David S.; Ancalle, Pablo J.; Domanski, Marian M.
Ancalle, D.S., Ancalle, P.J., and Domanski, M.M., 2017, FEQinput—An editor for the full equations (FEQ) hydraulic modeling system: U.S. Geological Survey Fact Sheet 2017–3072, 4 p., https://doi.org/10.3133/fs20173072.

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Year Published: 2017

Hydrogeology and water quality of sand and gravel aquifers in McHenry County, Illinois, 2009-14, and comparison to conditions in 1979

Baseline conditions for the sand and gravel aquifers (groundwater) in McHenry County, Illinois, were assessed using data from a countywide network of 44 monitoring wells collecting continuous water-level data from 2009–14. In 2010, water-quality data were collected from 41 of the monitoring wells, along with five additional monitoring wells...

Gahala, Amy M.
Gahala, A.M., 2017, Hydrogeology and water quality of sand and gravel aquifers in McHenry County, Illinois, 2009-14, and comparison to conditions in 1979: U.S. Geological Survey Scientific Investigations Report 2017-5112, 91 p., https://doi.org/10.3133/sir20175112.

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Year Published: 2017

Simulation of daily streamflow for 12 river basins in western Iowa using the Precipitation-Runoff Modeling System

The U.S. Geological Survey, in cooperation with the Iowa Department of Natural Resources, constructed Precipitation-Runoff Modeling System models to estimate daily streamflow for 12 river basins in western Iowa that drain into the Missouri River. The Precipitation-Runoff Modeling System is a deterministic, distributed-parameter, physical-process-...

Christiansen, Daniel E.; Haj, Adel E.; Risley, John C.
Christiansen, D.E., Haj, A.E., and Risely, J.C., 2017, Simulation of daily streamflow for 12 river basins in western Iowa using the Precipitation-Runoff Modeling System: U.S. Geological Survey Scientific Investigations Report 2017–5091, 27 p., https://doi.org/10.3133/sir20175091.

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Year Published: 2017

Assessment of an in-channel redistribution technique for large woody debris management in Locust Creek, Linn County, Missouri

The U.S. Geological Survey, in cooperation with the Missouri Department of Conservation and Missouri Department of Natural Resources, completed a study to assess a mechanical redistribution technique used for the management of large woody debris (LWD) jams in Locust Creek within Pershing State Park and Fountain Grove Conservation Area, Linn County...

Heimann, David C.
Heimann, D.C., 2017, Assessment of an in-channel redistribution technique for large woody debris management in Locust Creek, Linn County, Missouri: U.S. Geological Survey Scientific Investigations Report 2017–5120, 25 p., https://doi.org/10.3133/sir20175120.

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Year Published: 2017

A comparison of four porewater sampling methods for metal mixtures and dissolved organic carbon and the implications for sediment toxicity evaluations

Evaluations of sediment quality conditions are commonly conducted using whole-sediment chemistry analyses but can be enhanced by evaluating multiple lines of evidence, including measures of the bioavailable forms of contaminants. In particular, porewater chemistry data provide information that is directly relevant for interpreting sediment...

Cleveland, Danielle; Brumbaugh, William G.; MacDonald, Donald D.
Cleveland, D.M., Brumbaugh, W.G., and MacDonald, D.D., 2017, A comparison of four porewater sampling methods for metal mixtures and dissolved organic carbon and the implications for sediment toxicity evaluations: Environmental Toxicology and Chemistry, Early View Article, July 2017

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Year Published: 2017

Forecast first: An argument for groundwater modeling in reverse

Numerical groundwater models are important compo-nents of groundwater analyses that are used for makingcritical decisions related to the management of ground-water resources. In this support role, models are oftenconstructed to serve a specific purpose that is to provideinsights, through simulation, related to a specific func-tion of a complex...

White, Jeremy
White, J. T. (2017), Forecast First--An argument for groundwater modeling in reverse.: Groundwater, v. 55, no. 5, p. 660–664, doi:10.1111/gwat.12558.

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Year Published: 2017

The importance of parameterization when simulating the hydrologic response of vegetative land-cover change

Computer models of hydrologic systems are frequently used to investigate the hydrologic response of land-cover change. If the modeling results are used to inform resource-management decisions, then providing robust estimates of uncertainty in the simulated response is an important consideration. Here we examine the importance of parameterization,...

White, Jeremy; Stengel, Victoria G.; Rendon, Samuel H.; Banta, John
White, Jeremy, Stengel, Victoria, Rendon, Samuel, and Banta, John, 2017, The importance of parameterization when simulating the hydrologic response of vegetative land-cover change: Hydrology and Earth System Sciences, v. 21, 3975–3989, https://doi.org/10.5194/hess-21-3975-2017

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Year Published: 2017

Watershed Data Management (WDM) database for West Branch DuPage River streamflow simulation, DuPage County, Illinois, January 1, 2007, through September 30, 2013

The U.S. Geological Survey (USGS), in cooperation with the DuPage County Stormwater Management Department, maintains a database of hourly meteorological and hydrologic data for use in a near real-time streamflow simulation system. This system is used in the management and operation of reservoirs and other flood-control structures in the West...

Bera, Maitreyee
Bera, Maitreyee, 2017, Watershed Data Management (WDM) database for West Branch DuPage River streamflow simulation, DuPage County, Illinois, January 1, 2007, through September 30, 2013: U.S. Geological Survey Open-File Report 2017–1099, 39 p., https://doi.org/10.3133/ofr20171099.

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Year Published: 2017

Assessment of adult pallid sturgeon fish condition, Lower Missouri River—Application of new information to the Missouri River Recovery Program

During spring 2015, Nebraska Game and Parks Commission (NGPC) biologists noted that pallid sturgeon (Scaphirhynchus albus) were in poor condition during sampling associated with the Pallid Sturgeon Population Assessment Project and NGPC’s annual pallid sturgeon broodstock collection effort. These observations prompted concerns that reduced fish...

Randall, Michael T.; Colvin, Michael E.; Steffensen, Kirk D.; Welker, Timothy L.; Pierce, Landon L.; Jacobson, Robert B.
Randall, M.T., Colvin, M.E., Steffensen, K.D., Welker, T.L., Pierce, L.L., and Jacobson, R.B., 2017, Assessment of adult pallid sturgeon fish condition, Lower Missouri River—Application of new information to the Missouri River Recovery Program: U.S. Geological Survey Open-File Report 2017–1121, 103 p., https://doi.org/10.3133/ofr20171121.

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Year Published: 2017

Are exposure predictions, used for the prioritization of pharmaceuticals in the environment, fit for purpose?

Prioritization methodologies are often used for identifying those pharmaceuticals that pose the greatest risk to the natural environment and to focus laboratory testing or environmental monitoring toward pharmaceuticals of greatest concern. Risk-based prioritization approaches, employing models to derive exposure concentrations, are commonly used...

Burns, Emily E.; Thomas-Oates, Jane; Kolpin, Dana W.; Furlong, Edward T.; Boxall, Alistair B.A.
Burns, E.E., Thomas-Oates, J., Kolpin, D.W., Furlong, E.T., Boxall, A.B.A. 2017. Are exposure predictions, used for prioritization of pharmaceuticals in the environment, fit for purpose? Environ. Toxicol. Chem. v. 36, p. 2823-2832.

Filter Total Items: 119
USGS
November 10, 2015

A new interactive Flood Inundation Map to improve flood warnings and assist with emergency management along Big Creek in Alpharetta and Roswell, Georgia, was debuted during a ceremony today in Alpharetta’s Rock Mill Park.

USGS
October 30, 2015

U.S. Geological Survey field crews are measuring record flooding in parts of central Texas following intense rainfall.

Gator
October 28, 2015

Alligators and the Everglades go hand-in-hand, and as water conditions change in the greater Everglades ecosystem, gators are one of the key species that could be affected.

Satellite image of the Gulf of Mexico and coastline, Gulf Hypoxic Zone
October 19, 2015

Hypoxia sounds as bad as it is. It refers to an environment that is too low on oxygen to sustain most aerobic life, particularly an aquatic environment. Hypoxia is most problematic when it happens where oxygen is normally plentiful, because most living organisms require oxygen to continue living.

Image: USGS Scientist Inspects Streamgage During Flooding Event
October 5, 2015

Heavy rains and hazardous weather conditions are occurring in western South Carolina, with record flooding occurring and more expected over parts of the region over the next several days.

USGS
October 2, 2015

Currently, heavy rains and hazardous weather conditions are predicted for western North Carolina and most of South Carolina by the National Weather Service, with flooding possible over parts of the region over the next several days.

Image: San Angelo Streamgage
September 15, 2015

A newly installed U.S. Geological Survey streamgage on the South Concho River is providing dam operators and downstream users critical information about the river.

USGS
August 17, 2015

The City of West Branch, Iowa, and the U.S. Geological Survey recently partnered to provide real-time streamflow and flood warning information on the west branch of flood-prone Wapsinonoc Creek.

USGS
July 15, 2015

The drainage of small wetlands can decrease wildlife habitat and may contribute to flooding in the Prairie Pothole Region (PPR), according to a recent U.S. Geological Survey study.

Image: Giant African Land Snail
July 9, 2015

The invasive giant African land snail is expanding its range in Miami, and with it, the range of the parasitic rat lungworm, according to new U.S. Geological Survey led research.

USGS
June 30, 2015

Cheryl J. Hapke begins work this week as the Director of the U.S. Geological Survey’s St. Petersburg Coastal and Marine Science Center.

Wading Birds in the Everglades, Florida
June 24, 2015

Wading bird numbers in the Florida Everglades are driven by water patterns that play out over multiple years according to a new study by the U.S. Geological Survey and Florida Atlantic University.