Ground Water Atlas of the United States: Segment 11, Delaware, Maryland, New Jersey, North Carolina, Pennsylvania, Virginia, West Virginia

Trapp, Henry; Horn, Marilee A.

doi:10.3133/ha730l

Cited by 23 publications

(6 citation statements)

References 5 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stream-valley aquifers are within the Holocene-age sand and gravel deposited as alluvium along the valleys of major streams. Some of these sediments are reworked glacial deposits that were eroded and transported downstream, and they are associated with rivers such as the Allegheny and Ohio Rivers that have their headwaters in glaciated areas (Trapp and Horn, 1997). The stream-valley aquifers are associated with the sand and gravel deposits in the valleys of the stream or river that typically is hydraulically connected to the aquifers (Trapp and Horn, 1997).…”

Section: Stream-valley Aquifers Principal Aquifer Study Network 2 (Stmentioning

confidence: 99%

“…Some of these sediments are reworked glacial deposits that were eroded and transported downstream, and they are associated with rivers such as the Allegheny and Ohio Rivers that have their headwaters in glaciated areas (Trapp and Horn, 1997). The stream-valley aquifers are associated with the sand and gravel deposits in the valleys of the stream or river that typically is hydraulically connected to the aquifers (Trapp and Horn, 1997). Groundwater in the stream-valley aquifers commonly is under water-table, or unconfined, conditions but confined conditions occur in places where clay or silt make up local confining units (Lloyd and Lyke, 1995).…”

Section: Stream-valley Aquifers Principal Aquifer Study Network 2 (Stmentioning

confidence: 99%

“…Recharge to the aquifer is from infiltration of precipitation and drainage of surface water from the streams and rivers adjacent to these aquifers (Lloyd and Lyke, 1995;Trapp and Horn, 1997).…”

Section: Stream-valley Aquifers Principal Aquifer Study Network 2 (Stmentioning

confidence: 99%

“…The Long Island-New Jersey coastal drainages aquifer system (linjlusrc1 is in the southern end) underlies an area of about 6,000 mi 2 (Stackelberg and Ayers, 1994) and is home to about 15 million people in parts of New York and New Jersey (Ayers and others, 2000) and the cities of New York, New York, and Trenton, N.J., overlying the aquifer system. The Northern Atlantic Coastal Plain aquifer system consists of unconsolidated to partly consolidated sediments that range in age from Early Cretaceous to Holocene (Trapp and Horn, 1997;Masterson and others, 2013;Denver and others, 2014). The sedimentary layers thicken and deepen toward the Atlantic Coast, where they reach a maximum thickness of about 10,000 ft.…”

Section: Long Island-new Jersey Coastal Drainages Urban Land-use Studmentioning

confidence: 99%

See 3 more Smart Citations

Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019

Kingsbury¹,

Bexfield²,

Arnold³

et al. 2021

Data Series

View full text Add to dashboard Cite

Sustaining the quality of the Nation's water resources and the health of our diverse ecosystems depends on the availability of sound water-resources data and information to develop effective, science-based policies. Effective management of water resources also brings more certainty and efficiency to important economic sectors. Taken together, these actions lead to immediate and long-term economic, social, and environmental benefits that make a difference to the lives of the almost 400 million people projected to live in the United States by 2050.In 1991, Congress established the National Water-Quality Assessment (NAWQA) Project to address where, when, why, and how the Nation's water quality has changed, or is likely to change in the future, in response to human activities and natural factors. Since then, NAWQA has been a leading source of scientific data and knowledge used by national, regional, State, and local agencies to develop science-based policies and management strategies to improve and protect water resources used for drinking water, recreation, irrigation, energy development, and ecosystem needs (htt ps://water .usgs.gov/ nawqa/ applications/ ). Plans for the third decade of NAWQA (2013-23) address priority water-quality issues and science needs identified by NAWQA stakeholders, such as the Advisory Committee on Water Information and the National Research Council, and are designed to meet increasing challenges related to population growth, increasing needs for clean water, and changing land-use and weather patterns.NAWQA is assessing the quality of groundwater used for public and domestic drinking-water supply. NAWQA obtains samples from public-supply wells, domestic wells, and shallow monitoring wells and analyzes those samples for a large number of chemical constituents. These data are used to assess the suitability of the resource for human consumption, as well as to evaluate changes in groundwater quality over a variety of time scales. Groundwater quality also is assessed at multiple scales: locally, regionally, and nationally. Groundwater-quality data collected by the NAWQA Project during each year are published in annual data series reports. This report, the fifth in the series, combines groundwater-quality data collected at 983 sites to provide a summary of groundwater quality in selected aquifers across the Nation during the sampling period. All NAWQA reports are available online at htt ps://water .usgs.gov/ nawqa/ bib/ .We hope this publication will provide you with insights and information to meet your waterresource needs and will foster increased citizen awareness and involvement in the protection and restoration of our Nation's waters. The information in this report is intended primarily for those interested or involved in resource management and protection, conservation, regulation, and policymaking at the regional and national levels.

show abstract

Section: Stream-valley Aquifers Principal Aquifer Study Network 2 (Stmentioning

confidence: 99%

Section: Stream-valley Aquifers Principal Aquifer Study Network 2 (Stmentioning

confidence: 99%

Section: Stream-valley Aquifers Principal Aquifer Study Network 2 (Stmentioning

confidence: 99%

Section: Long Island-new Jersey Coastal Drainages Urban Land-use Studmentioning

confidence: 99%

See 2 more Smart Citations

Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019

Kingsbury¹,

Bexfield²,

Arnold³

et al. 2021

Data Series

View full text Add to dashboard Cite

show abstract

“…The study area is underlain by a series of confined and unconfined aquifers collectively known as the Northern Atlantic Coastal Plain aquifer system (Trapp and Horn, 1997). The regional confined aquifer system in the study area is generally overlain by younger sediments ranging in age from Tertiary to Quaternary.…”

Section: Hydrogeologic Frameworkmentioning

confidence: 99%

Simulated effects of sea-level rise on the shallow, fresh groundwater system of Assateague Island, Maryland and Virginia

Fleming¹,

Raffensperger²,

Goodling³

et al. 2021

Scientific Investigations Report

View full text Add to dashboard Cite

The U.S. Geological Survey, in cooperation with the National Park Service, developed a three-dimensional groundwater-flow model for Assateague Island in eastern Maryland and Virginia to assess the effects of sea-level rise on the groundwater system. Sea-level rise is expected to increase the altitude of the water table in barrier island aquifer systems, possibly leading to adverse effects to ecosystems on the barrier islands. The potential effects of sea-level rise were evaluated by simulating groundwater conditions under sea-level-rise scenarios of 20 centimeters (cm), 40 cm, and 60 cm. Results show that as sea level rises, low-lying areas of the island originally represented as receiving freshwater recharge in the baseline scenario are inundated by saltwater. This change from freshwater recharge to saltwater decreases the overall amount of freshwater recharging the system. As the water table rises in response to the higher sea levels, freshwater flow out of the system changes, with more freshwater leaving as submarine groundwater discharge and less freshwater leaving as seeps and evapotranspiration. At the current land-surface altitude, as much as 50 percent of the island may be inundated with a 60-cm rise in sea level, and the low-lying marshes may change from freshwater to saltwater.Groundwater levels at 32 wells were monitored for as long as 12 months between October 2014 and September 2015 on Assateague Island. Results from objective classification analysis of 14 shallow monitoring wells show two dominant processes affecting groundwater levels in two different settings on the island. On the western side of the island, between the primary dune and the inland bays, water levels clearly respond to precipitation events. This side of the island is more protected from ocean tides and typically is more vegetated than the eastern side. On the eastern side of the island, between the Atlantic Ocean and the primary dune, water levels clearly respond to tidal events. Specific conductance was measured at four wells, two on the western part of the island and two on the eastern part of the island. Specific conductance values in the two wells west of the primary dune show episodic decreases, coinciding with precipitation events. Specific conductance values in the two wells on the eastern side of the primary dune show episodic increases, coinciding with high-tide events. These high frequency monitoring data are intended to aid in designing a monitoring network that can document both short-term and long-term hydrologic processes on Assateague Island National Seashore.This study uses a modeling approach consistent with models developed for Gateway National Recreation Area, Sandy Hook Unit (New Jersey) and Fire Island National Seashore (New York). Combined, these models are meant to improve the regional capabilities for predicting climate-change effects on barrier islands and provide resource managers with a common set of tools for adaptation and mitigation of potentially adverse effects of sea-level rise.Total flow in and out...

show abstract

Polymer Coatings Affect Transport and Remobilization of Colloidal Activated Carbon in Saturated Sand Columns: Implications for In Situ Groundwater Remediation

Guan,

Kong,

Liu

et al. 2024

Environ. Sci. Technol.

View full text Add to dashboard Cite

Colloidal activated carbon (CAC) is an emerging technology for the in situ remediation of groundwater impacted by per-and polyfluoroalkyl substances (PFAS). In assessing the longterm effectiveness of a CAC barrier, it is crucial to evaluate the potential of emplaced CAC particles to be remobilized and migrate away from the sorptive barrier. We examine the effect of two polymer stabilizers, carboxymethyl cellulose (CMC) and polydiallyldimethylammonium chloride (PolyDM), on CAC deposition and remobilization in saturated sand columns. CMC-modified CAC showed high mobility in a wide ionic strength (IS) range from 0.1 to 100 mM, which is favorable for CAC delivery at a sufficient scale. Interestingly, the mobility of PolyDM-modified CAC was high at low IS (0.1 mM) but greatly reduced at high IS (100 mM). Notably, significant remobilization (release) of deposited CMC-CAC particles occurred upon the introduction of solution with low IS following deposition at high IS. In contrast, PolyDM-CAC did not undergo any remobilization following deposition due to its favorable interactions with the quartz sand. We further elucidated the CAC deposition and remobilization behaviors by analyzing colloid−collector interactions through the application of Derjaguin−Landau−Verwey−Overbeek theory, and the inclusion of a discrete representation of charge heterogeneity on the quartz sand surface. The classical colloid filtration theory was also employed to estimate the travel distance of CAC in saturated columns. Our results underscore the roles of polymer coatings and solution chemistry in CAC transport, providing valuable guidelines for the design of in situ CAC remediation with maximized delivery efficiency and barrier longevity.

show abstract

Ground Water Atlas of the United States: Segment 11, Delaware, Maryland, New Jersey, North Carolina, Pennsylvania, Virginia, West Virginia

Cited by 23 publications

References 5 publications

Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019

Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019

Simulated effects of sea-level rise on the shallow, fresh groundwater system of Assateague Island, Maryland and Virginia

Polymer Coatings Affect Transport and Remobilization of Colloidal Activated Carbon in Saturated Sand Columns: Implications for In Situ Groundwater Remediation

Contact Info

Product

Resources

About