Unified Interior Regions

Maryland

Maryland's water supply comes from streams, rivers, groundwater and reservoirs. Many of these systems flow to the Chesapeake Bay, the Nation's largest estuary. This complex ecosystem has been degraded due to the impact of human-population increase. The MD-DC-DE Water Science Center studies the impacts this has on water quality, habitats and biological communities.

Maryland Water

Maryland - Delaware - Washington D.C. Water Science Center

Maryland -  Delaware - Washington D.C. Water Science Center

5522 Research Park Drive
Catonsville, MD 21228

Phone: 443-498-5500
Fax: 442-498-5510

MD-DE-DC Water

Patuxent Wildlife Research Center

Patuxent Wildlife Research Center

12100 Beech Forest Road
Laurel, MD 20708-4039

Phone: 301-497-5000

Patuxent Research

States L2 Landing Page Tabs

Filter Total Items: 107
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...

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...

Date published: January 12, 2018
Status: Active

U.S. Geological Survey (USGS) Science Summary—New digital map documents surficial-aquifer thickness in the Delmarva Peninsula, Maryland and Delaware: Helping to understand the role of groundwater in delivering nitrogen to Chesapeake Bay

Nitrate, the major source of nitrogen in streams of the Eastern Shore of Chesapeake Bay and the wider Delmarva Peninsula, is transported primarily in groundwater through the unconfined surficial aquifer. Understanding the subsurface processes that affect nitrate transport in this area has been hampered by a lack of regional information on the thickness of this aquifer.

Date published: January 12, 2018
Status: Active

Hear a Presentation of nutrient and sediment trends in the Bay watershed

The goal of the IAN seminar series is to provide concise, thought-provoking ideas relating to Chesapeake Bay science and management. Short presentations (15 minutes maximum length) are immediately followed by a lunchtime discussion of the topics raised by the presenter. The discussion is summarized and is posted along with a pdf version of the seminar slides. The seminars are captured on video...

Date published: September 22, 2017
Status: Active

Long-Term Response Monitoring of Suspended-Sediment Transport Characteristics on the Patapsco River near Ellicott City, Maryland, in Response to the Removal of Simkins Dam, 2010-present

For over 100 years, the Patapsco River has been impacted by the presence of several dams that were designed and built at the beginning of the 20th century. The objective of the project is to monitor suspended-sediment transport resulting from the removal of Simkins Dam on the lower Patapsco River in November 2010. The role of USGS in the project includes operation and maintenance of 3 stream...

Date published: September 22, 2017
Status: Active

Delaware Agricultural Shallow Groundwater Monitoring Network

Studies in the Delmarva Peninsula have demonstrated that groundwater in shallow unconfined aquifers near agricultural lands is susceptible to contamination from chemicals applied at the land surface.

Observed concentrations of nitrate in shallow groundwater commonly exceed the U.S. Environmental Protection Agency Maximum Contaminant Level of 10 mg/L on the peninsula. Groundwater...

Date published: September 19, 2017

Enhanced hydrologic and geomorphic monitoring in Ten Mile Creek, Montgomery County, Maryland

Ten Mile Creek is a small, predominantly agricultural and forested watershed located to the west of Clarksburg, Maryland, in an area that has experienced land-use change and urban development over the past decade. Additional development extending into the Ten Mile Creek watershed is planned over the next several years.

This planned development in the Ten Mile Creek watershed presents an...

Date published: September 14, 2017
Status: Completed

Bioremediation in Wetland Areas, Standard Chlorine of Delaware Inc. Superfund Site, Delaware City, Delaware

Major releases of chlorinated benzenes and benzene are known to have occurred at the Standard Chlorine of Delaware Inc. Superfund Site from 1966-2002, resulting in contamination of the groundwater underlying the site and the wetlands surrounding Red Lion Creek.

Although installation of a groundwater interception and treatment system has been completed around the main facility, wetland...

Contacts: Michelle Lorah
Date published: September 8, 2017
Status: Active

Coastal Monitoring Tide Gage Sites in Maryland, Delaware, and Washington, D.C.

Vital coastal storm-tide information needed to help guide storm response efforts following major storms affecting Maryland will be more accessible than ever due to a new monitoring network the U.S. Geological Survey is currently building. 

A team from the USGS MD-DE-DC Water Science Center is surveying 63 locations in the state, determining their elevations and installing receiving...

Date published: September 6, 2017
Status: Completed

Water Use

The U.S. Geological Survey (USGS) estimates water use by state, source of water, and category of use every 5 years. The withdrawals for Maryland, Delaware, and the District of Columbia are available in the tables below.

In 2010, 1,472 million gallons per day (Mgal/d) of freshwater were withdrawn from surface water and groundwater sources in Maryland, 300 Mgal/d in Delaware, and 0.10...

Contacts: Wendy McPherson
Date published: September 6, 2017
Status: Completed

Monitoring Water-Quality Response of Conservation Practices in the Bucks Branch Watershed, Sussex County, Delaware

The Bucks Branch sub watershed in the Nanticoke River basin has been identified as having one of the highest concentrations of nitrate in surface water of all sites sampled in Delaware. 

Changes in water quality related to changes in agricultural conservation practices will be seen first in shallow groundwater as groundwater is the major source of nitrate in surface water. 

Very...

Date published: August 30, 2017
Status: Active

Hydrogeology and Groundwater Quality of the Anacostia River Watershed

The Anacostia River has been subjected to dredging, filling, contamination, and other human influences for over 200 years. The result of these activities is that the river has been seriously degraded from its natural state. Many groups have been working to reduce the effects of environmental degradation on the water quality and living resources of the Anacostia River, primarily by focusing on...

Contacts: Cheryl Dieter
Filter Total Items: 55
USGS
September 14, 2020

Jeff Raffensperger MD-DE-DC 2020 Seminar

Jeff Raffensperger MD-DE-DC 2020 Seminar

USGS
December 27, 2019

File Structure for USGS_DRO database

Data collected under a diversity of sampling situations, using nets and quite a variety of trap types. This file documents the fields in the database.

USGS
April 8, 2020

Aggregates Data by State, Type, and End Use; 1971–2016

This data set contains supplemental aggregates data for the USGS Minerals Yearbook Volume II—Area Reports: Domestic. It contains data for the years 1971 through 2016 and replaces the discrete construction aggregate tables that were included in the individual State chapters prior to 2014. It contains

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).

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
Filter Total Items: 205
USGS
December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s Northeast Climate Science Center (NE CSC) is awarding nearly $700,000 to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

Image: Ready for Action
December 15, 2014

Average chloride concentrations often exceed toxic levels in many northern United States streams due to the use of salt to deice winter pavement, and the frequency of these occurrences nearly doubled in two decades.

USGS
October 15, 2014

Three years after a magnitude 5.8 earthquake caused $25 million worth of damage to its pinnacles, buttresses and ceilings, the Washington National Cathedral will host earthquake experts from the U.S. Geological Survey (USGS), the Federal Emergency Management Agency (FEMA), and the Great ShakeOut earthquake drill. 

USGS
October 9, 2014

A press conference will be held on October 14, 2014 in recognition of the upcoming International ShakeOut Day of Action. On October 16, nearly 25 million people (2 million in the SouthEast region) are expected to participate in the world’s largest earthquake drill.

collage of scientists
September 15, 2014

Department of the Interior scientists are generating and sharing critical information to aid the recovery of the areas impacted by Hurricane Sandy, helping to protect our valuable coastal resources and to make communities more resilient against future extreme storms.

USGS
August 4, 2014

Vital coastal storm-tide information needed to help guide storm response efforts following major storms affecting Maryland will be more accessible than ever due to a new monitoring network the U.S. Geological Survey is currently building.  

USGS
August 4, 2014

Vital coastal storm-tide information needed to help guide storm response efforts following major storms affecting Pennsylvania will be more accessible than ever due to a new monitoring network the U.S. Geological Survey is currently building.  

USGS
June 25, 2014

On the one-year anniversary of President Obama’s Climate Action Plan, Secretary of the Interior Sally Jewell today released a new report showing that forests, wetlands and farms in the eastern United States naturally store 300 million tons of carbon a year (1,100 million tons of CO2 equivalent).

2014 US Topo map of the Keedysville, Maryland area.
May 22, 2014

US Topo maps now have a crisper, cleaner design - enhancing readability of maps for online and printed use. Map symbols are easier to read over the digital aerial photograph layer whether the imagery is turned on or off.

Lidar image showing the upper parts of the landslide that occurred in northwest Washington on March 22, 2014.
May 14, 2014

Want to know how elevation will benefit your state? The USGS National Geospatial Program is advancing the 3D Elevation Program, known as 3DEP, in response to the growing need for high-quality three-dimensional representations of the Nation’s natural and constructed features.

USGS
April 9, 2014

Oyster aquaculture in the Potomac River estuary could result in significant improvements to water quality, according to a new NOAA and U.S. Geological Survey study published in the journal Aquatic Geochemistry.

Maryland - Delaware - Washington D.C. Water Science Center

Maryland -  Delaware - Washington D.C. Water Science Center

5522 Research Park Drive
Catonsville, MD 21228

Phone: 443-498-5500
Fax: 442-498-5510

MD-DE-DC Water

Patuxent Wildlife Research Center

Patuxent Wildlife Research Center

12100 Beech Forest Road
Laurel, MD 20708-4039

Phone: 301-497-5000

Patuxent Research