Unified Interior Regions

Maryland

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Filter Total Items: 96
Mallard
Date Published: March 12, 2018
Status: Active

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.

Location of Upper Diffcult, Virginia - Locations of channel an floodplain measurements
Date Published: January 24, 2018
Status: Active

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...

Coastal Change Hazards Portal
Date Published: January 23, 2018
Status: Active

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.

Contacts: Kara Doran
Oblique aerial photograph near Rodanthe, NC, looking south along the coast on August 30, 2011, three days after landfall of Hurr
Date Published: January 18, 2018
Status: Active

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. 

Contacts: Kara Doran
coastal vulnerability of sea-level rise map
Date Published: January 18, 2018
Status: Active

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 ...

Oblique aerial photograph looking to the southwest along the southern end of Cedar Island, Virginia
Date Published: January 18, 2018
Status: Active

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.

Susquehanna River at Conowingo Dam
Date Published: January 17, 2018
Status: Completed

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.

View of the Chesapeake Bay
Date Published: January 17, 2018
Status: Active

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
Date Published: January 17, 2018
Status: Active

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.

Chesapeake Bay Watershed and Streamflow
Date Published: January 16, 2018
Status: Active

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...

Sediment trapping, mineral and organic in flood plain of Difficult Run Virginia
Date Published: January 12, 2018
Status: Active

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...

Filter Total Items: 28
Orthoimagery of Augusta Ga
April 12, 2016

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.

Small Scale Collection USA
April 12, 2016

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.

Image: Scarlett Isabella in Delmarva
March 15, 2016

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

USGS
January 1, 2016

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

Filter Total Items: 41
video thumbnail: Stream restoration, sediment TMDLs issues, and riparian vegetation in urban gullies flowing into the Chesapeake Bay, Carriage Hills, Maryland
March 21, 2011

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

...
Attribution: Water Resources
video thumbnail: Special stormwater outfalls (bubblers) used in stream restoration projects to reduce erosive energy, Carriage Hills Outfall, Maryland
March 21, 2011

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.

Attribution: Water Resources
video thumbnail: Protection of urban headwaters during residential development, Jabaz Branch, Severn, Maryland
March 21, 2011

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.

Attribution: Water Resources
USGS CoreCast
July 15, 2010

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.

Image: Vegetation Buffer Around Maryland Pond
July 3, 2007

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.

Image: Vegetation Buffer Around Maryland Pond
July 3, 2007

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.

March 22, 2007

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
...
Image: Eastern Shore of Maryland Coastal Wetland

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).

Image: Sinkhole in Frederick, Maryland

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).

USGS
October 10, 2018

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
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Image: Methane Seeps along Offshore Virginia
June 16, 2016

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.

As US models predicted Hurricane Joaquin washed out a road at Kitty Hawk, NC in 2015.
June 1, 2016

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.

 

Image: Chesapeake Bay osprey chicks mostly healthy despite toxic exposure
April 4, 2016

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.

collage of scientists conducting science related to each mission are
March 14, 2016

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.

Visualize Your Water EPA logo
January 13, 2016

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. 

Screenshot of portal entry page
October 2, 2015

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.

USGS science for a changing world logo
August 10, 2015

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.

USGS science for a changing world logo
August 10, 2015

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.

USGS
June 29, 2015

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.

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