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Pathogens in the Aquatic Environment – Waterfowl, Avian Influenza
This project focuses on understanding the prevalence and strains of avian influenza viruses in the aquatic environment and how this compares to those circulating within wild birds in the same area.
U.S. Geological Survey (USGS) Science Summary—The Role of Storms on Bank Erosion Rates and Sediment Transport in Urban Areas
Sediment is a major pollutant degrading aquatic ecosystems in the Chesapeake Bay watershed. The USGS is conducting studies to determine the relative importance of streambank erosion to other sediment sources, such as upland erosion, in both agricultural and urban areas. The information is necessary so resource managers can focus on the types, and locations, of practices that will be most...
Scenario-Based Assessments for Coastal Change Hazard Forecasts
A decade of USGS research on storm-driven coastal change hazards has provided the data and modeling capabilities needed to identify areas of our coastline that are likely to experience extreme and potentially hazardous erosion during an extreme storm.
National Assessment of Storm-Induced Coastal Change Hazards
This project focuses on understanding the magnitude and variability of extreme storm impacts on sandy beaches. The overall objective is to improve real-time and scenario-based predictions of coastal change to support management of coastal infrastructure, resources, and safety.
National Assessment of Coastal Vulnerability to Sea Level Rise
The original national coastal vulnerability index (CVI) assessment was motivated by expected accelerated sea-level rise (SLR) and the uncertainty in the response of the coastline to SLR. This research was conducted between 1999 and 2001, and is currently being updated using new data sources and methodology. This original study was part of the ...
Long-Term Coastal Change
Goals of this task include developing and improving coastal-change assessments and supporting long-term planning and decision making to ensure sustainable coastal economies, infrastructure, and ecosystems.
National Assessment of Coastal Change Hazards
Research to identify areas that are most vulnerable to coastal change hazards including beach and dune erosion, long-term shoreline change, and sea-level rise.
Conowingo Dam Above 90 Percent Capacity For Sediment Storage
The Conowingo Dam on the Susquehanna River is at about 92 percent capacity for sediment storage according to new U.S. Geological Survey research.
Chesapeake Bay ‘dead zone’ to vary from average to slightly smaller
Hypoxic zone size affected by low river flow and nutrient loading
Scientists expect that this year’s mid-summer Chesapeake Bay hypoxic low-oxygen zone or “dead zone” – an area of low to no oxygen that can kill fish and aquatic life – will be approximately 1.58 cubic miles, about the volume of 2.3 million Olympic-size swimming pools. This is close to the long-term...
USGS contributes Toward Assessment of Bay's Health and Restoration
The federal agencies leading the watershed-wide effort to restore the Chesapeake Bay have released a progress report highlighting work completed in the 2015 fiscal year.
Streamflow in the Watershed and Entering the Chesapeake Bay
The health of the Chesapeake Bay, and streams in the watershed, are affected by changes in surface-water flows. Runoff from storms carries pollutants, such as nutrients, sediments, and toxic contaminants, into streams throughout the 64,000 square-mile watershed, which drain to the Bay. The changes of stream flow, and associated pollutant loads, influence habitat conditions for fisheries and...
U.S. Geological Survey (USGS) Science Summary—Vegetation traps nutrients and sediment in the flood plain of an urban stream in the Chesapeake Bay watershed
Urbanization in the Chesapeake Bay watershed has increased stream discharge, the frequency of flood-plain inundation, and the transport of nutrients (such as nitrogen and phosphorus) and sediment to streams and, ultimately, to the bay. Understanding the effects of the abundance, composition, and location of vegetation on flood-plain functions such as nutrient cycling and sediment trapping can...
Orthoimagery data typically are high resolution aerial images that combine the visual attributes of an aerial photograph with the spatial accuracy and reliability of a planimetric map. The National Map offers public domain, 1-meter orthoimagery for the conterminous United States with many urban areas and other locations at 2-foot or finer resolution.
The National Map offers a collection of small-scale datasets, most of which are at 1:1,000,000. The National Map publishes two data collections at one million-scale: one for Global Map users and one for National Map users. In terms of vector geometry, the lines, points, and areas in these data collections are identical. The difference is in the attributes assigned to these features.
The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey conducted cruises during the summers of 2014 and 2015 to map the inner continental shelf of the Delmarva Peninsula using geophysical and sampling techniques to define the geologic framework
Isotopic analyses of authigenic carbonates and methanotrophic deep-sea mussels, Bathymodiolus sp., was performed on samples collected from seep fields in the Baltimore and Norfolk Canyons on the north Atlantic margin. Samples were collected using remotely operated underwater vehicles (ROVs) during three different research cruises in 2012, 2013, and 2015. Analyses were performed by sev
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Stream restoration, sediment TMDLs issues, and riparian vegetation in urban gullies flowing into the Chesapeake Bay, Carriage Hills, Maryland
Faith Fitzpatrick (U.S. Geological Survey), Keith Underwood (Underwood and Assoc.), Erik Michelsen (South River Federation), and Joe Berg (BioHabitats, Inc.) discuss how a degraded headwater ephemeral gully in a residential area was retrofitted with sand seepage and step-pool systems to reduce erosion and improve water quality as well as aquatic and riparian habitat. Trees
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Special stormwater outfalls (bubblers) used in stream restoration projects to reduce erosive energy, Carriage Hills Outfall, Maryland
Faith Fitzpatrick (U.S. Geological Survey) and Joe Berg (BioHabitats, Inc.) describe bubble up inlet structures that help to reduce erosive energy for stormwater outfalls where they discharge into rehabilitated streams.
Protection of urban headwaters during residential development, Jabaz Branch, Severn, Maryland
Faith Fitzpatrick (U.S. Geological Survey), Keith Underwood (Underwood and Assoc.), and Joe Berg (BioHabitats, Inc.) discuss regenerative stormwater conveyance, sand seepage berms, and swales used in new "green" residential developments to protect important trout habitat in downstream areas.
Shaken, Not Stirred--3.6 Earthquake in Maryland
This morning the Washington D.C. Metro area was awakened by a 3.6 magnitude earthquake which struck near Germantown, Maryland and was widely felt throughout the region. We spoke with Mike Blanpied, of our Earthquake Hazards Program, about the details related to this event, why it was felt so widely, and what people can do to prepare around the region.
Chesapeake Bay coast at St. Michaels, Maryland
Chesapeake Bay coast at St. Michaels, Maryland
Vegetation Buffer Around Maryland Pond
A strip of primarily native vegetation restored around a small private pond in Garrett County, Maryland, to act as a runoff buffer and to provide habitat for wildlife.
Vegetation Buffer Around Maryland Pond
A strip of primarily native vegetation restored around a small private pond in Garrett County, Maryland, to act as a runoff buffer and to provide habitat for wildlife.
PubTalk 3/2007 — Impact!
Piecing together the story of a giant meteorite crater beneath the Atlantic coast
By David S. Powars, Geologist, and R.D. Catchings, Geophysicist
- Buried under Chesapeake Bay is a very well preserved impact structure 56 miles across and more than 2 miles deep
- Following clues from drill holes and seismic imagery, careful
Eastern Shore of Maryland Coastal Wetland
An example of a disappearing marsh in the Mid-Atlantic USA.
Hillshade showing topographic changes before and after develop.
Hillshade showing topographic changes before and after suburban develop in Tributary 104 located in Clarksburg, MD. Left photo is from 2002 (pre-development) and right photo is from 2013 (post-development).
Sinkhole in Frederick, Maryland
Cover-collapse sinkhole in limestone near Frederick, Maryland (September 2003). Many sinkholes occur along highways where rainwater runoff is concentrated into storm drains and ditches increasing the rate of sinkhole development (note the sewer drain pipe beneath roadway).
Internship: Response of a tidal brackish marsh to global change...
Response of a tidal brackish marsh to global change drivers: an ecosystem level manipulation of warming and elevated carbon dioxide
The "Best Report" for 2014 is "Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009-12"
Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas
Recent scientific work has confirmed the source, composition and origin of methane seeps on the Atlantic Ocean seafloor, discovered in 2012, where scientists never expected them to be.
New USGS models help predict storm effects on beaches
As the 2016 hurricane season opens, weather forecasters, emergency managers and coastal residents have access to tools developed by the U.S. Geological Survey that predict, more precisely than ever, where beach erosion and beachfront flooding will take place during hurricanes and other storms.
First-of-its-kind survey shows that algal toxins are found nationwide
The world's largest breeding population of ospreys is coping well with the long-lasting residues of toxic chemicals that were banned decades ago but remain in the Chesapeake Bay food chain at varying levels, such as the pesticide DDT and insulating chemicals known as PCBs.
Much of the coast from Maine to Virginia is more likely to change than to simply drown in response to rising seas during the next 70 years or so, according to a new study led by the U.S. Geological Survey.
Today, the U.S. Geological Survey and the U.S. Environmental Protection Agency announce Visualize Your Water, a citizen science challenge for high school students who live in the Great Lakes basin and Chesapeake Bay watershed.
A newly published, three-volume “Remote Sensing Handbook” is a comprehensive coverage of all remote sensing topics written by over 300 leading global experts.
As the path of Hurricane Joaquin continues to move farther offshore, making landfall in the U.S. less likely, U.S. Geological Survey coastal change experts say there’s still a high probability of dune erosion along parts of the Atlantic coast, from the North Carolina Outer Banks to Cape Cod.
BALTIMORE -- Forests worldwide are vulnerable to growing risks of drought- and heat-induced tree mortality and forest die-off because of a rapidly warming Earth, according to just-published research in the scientific journal Ecosphere. The paper is an invited “ESA Centennial Paper” to commemorate the 100th anniversary of the Ecological Society of America.
BALTIMORE -- This year, scientists from the U.S. Geological Survey will present their research at the 100th annual Ecological Society of America (ESA) meeting from Aug. 9-14, 2015, in Baltimore, Maryland. The theme is "Ecological Science at the Frontier: Celebrating ESA’s Centennial." ESA is a nonpartisan, nonprofit organization of scientists founded in 1915 to promote ecological science.
Interior Department’s Northeast Climate Science Center has released a report today synthesizing the latest information on the vulnerability of species and ecosystems to climate change in a 22-state region in the Northeast and Midwest U.S.
MENLO PARK, Calif.— Smartphones and other personal electronic devices could, in regions where they are in widespread use, function as early warning systems for large earthquakes according to newly reported research.
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Chesapeake Bay Program
Phone: (800) YOUR-BAY (968-7229)
Fax: (410) 267-5777
MD-DE-DC Water Science Center
information@usgs.gov
Phone: 443-498-5500
Fax: 442-498-5510
Patuxent Wildlife Research Center
webmaster@patuxent.usgs.gov
Phone: 301 497-5500
Chesapeake Bay Activities
Phone: 443-498-5552
Fax: 443-498-5510
Patuxent Wildlife Research Center - Beltsville Lab
Office of External Research
Phone: (443) 498-5505
Fax: (703) 648-5002