First posted April 5, 2017 For additional information, contact: Director, New England Water Science CenterU.S. Geological Survey10 Bearfoot RoadNorthborough, MA 01532https://newengland.water.usgs.gov/ some parts of the Nation, large-scale development groundwater has caused decreases in amount that is present aquifer storage and discharges to surface-water bodies. supply areas, particularly arid semiarid regions, not adequate meet demand, severe drought affecting large United States. Future...

Explosives used in construction have been implicated as sources of NO3– contamination groundwater, but direct forensic evidence is limited. Identification blasting-related can be complicated by other sources, including agriculture and wastewater disposal, hydrogeologic factors affecting transport stability. Here we describe a study that hydrogeology, chemistry, stable isotopes, mass balance calculations to evaluate groundwater areas surrounding highway site with documented blasting New...

Three wells in New Hampshire were sampled bimonthly over three years to evaluate the temporal variability of arsenic concentrations and groundwater age. All samples had measurable throughout entire sampling period individual a mean variation more than 7 μg/L. The time series data from this effort showed that ranged median 4 μg/L glacial aquifer well (SGW-65) medians 19 37 (SGW-93 KFW-87) screened bedrock aquifer, respectively. These high associated with consistently pH (median ≥ 8) low...

The New Hampshire Bedrock Aquifer Assessment was designed to provide information that can be used by communities, industry, professional consultants, and other interests evaluate the ground-water development potential of fractured-bedrock aquifer in State. assessment done at statewide, regional, well field scales identify relations potentially could increase success locating high-yield water supplies aquifer. data were collected for construction yield information, bedrock lithology,...

Groundwater geochemistry, redox process classification, high-frequency physicochemical and hydrologic measurements, climate data were analyzed to identify controls on arsenic (As) concentration changes. was monitored in two public-supply wells (one glacial aquifer one bedrock aquifer), bedrock-aquifer domestic well New Hampshire, USA, from 2014 2018 time scales of As Concentrations other geochemical constituents measured bimonthly. Specific conductance (SC), pH, dissolved oxygen, pumping...

Methyl tert-butyl ether (MTBE) concentrations ≥0.2 µg/L were found in samples of untreated water 18% public-supply wells (n = 284) and 9.1% private domestic 264) sampled 2005 2006 New Hampshire. In counties that used reformulated gasoline (RFG), MTBE occurred at or above 0.2 30% public- 17% private-supply wells. Additionally, 52% collocated with fuel storage 71% mobile home park had MTBE. occurrence was predicted by factors such as proximity to sources fuel, land use, population density,...

First posted May 11, 2020 For additional information, contact: Director, Central Midwest Water Science Center U.S. Geological Survey405 North Goodwin Urbana, IL 61801 Environmental groundwater-quality data were collected from 648 wells as part of the National Water-Quality Assessment Project Survey Program and are included in this report. Most (514) sampled January through December 2016, 60 them 2013 74 2014. The seven types well networks: principal aquifer study networks, which used to...

First posted March 29, 2021 For additional information, contact: Director, Lower Mississippi-Gulf Water Science Center U.S. Geological Survey640 Grassmere Park Drive Nashville, TN 37211 Groundwater-quality environmental data were collected from 983 wells as part of the National Water-Quality Assessment Project Survey Quality Program and are included in this report. The six types well networks: principal aquifer study networks, which used to assess quality groundwater for public water supply;...

First posted November 18, 2021 For additional information, contact: Director, New England Water Science CenterU.S. Geological Survey10 Bearfoot RoadNorthborough, MA 01532 Groundwater supplies 35 percent of drinking water in the United States. Mapping quantity and quality groundwater at depths used for potable requires an understanding locational variation characteristics drinking-water wells (depth open interval). Typical domestic- public-drinking-water supply vary by within aquifer across...

Analysis by remote-sensing techniques and observations of exposed bedrock structure were preliminary steps taken in a study to locate potential bedrock-fracture zones that may store transmit ground water near Great Bay, N.H. To help correlate lineaments on the surface with fractures, structural measurements made at bedrock, largely along shoreline bay, analyzed identify fracture trends characteristics. With these data, lineament-filtering techniques, such as (1) buffer analysis around...

Three bedrock water-supply systems in New Hampshire were studied, using borehole geophysics and flow-weighted sampling techniques, to determine the sources distribution of natural contaminants water entering boreholes assess whether modifications might be used reduce contaminant levels. Well more than 100 community have contaminants, such as arsenic uranium, above U.S. Environmental Protection Agency maximum levels 10 30 micrograms per liter, respectively. The water-system wells studied...

The U.S. Geological Survey (USGS), in cooperation with Region III of the Environmental Protection Agency (USEPA) and State Delaware, is conducting an ongoing study water-quality hydrogeologic properties Columbia Potomac aquifers extent cross-aquifer contamination benzene; chlorobenzene; 1,2-dichlorobenzene; 1,4-dichlorobenzene; hydrogen chloride (hydrochloric acid when dissolved water) vicinity Standard Chlorine Inc. (SCD), Superfund Site, Delaware City, Delaware. Surface geophysical surveys...

The former chloralkali facility in Berlin, New Hampshire, was designated a Superfund site 2005. Historic paper mill activities resulted the contamination of groundwater, surface water, and sediments with many organic compounds mercury (Hg). Hg continues to seep into Androscoggin River elemental form through bedrock fractures. objective this study spatially characterize (1) extent sediment, biota; (2) speciation methylmercury (MeHg) production potential rates sediment; (3) availability...

Leachate continues to be generated from landfills at the Auburn Road Landfill Superfund Site in Londonderry, New Hampshire. Impermeable caps on three site inhibit direct infiltration of precipitation; however, high water-table conditions allow groundwater interact with landfill materials below, creating leachate and ultimately reducing downgradient groundwater. Reducing can facilitate arsenic transport by allowing it stay solution or liberating adsorbed surfaces geologic sources, such as...

Borehole-geophysical logs collected from eight wells and direct-current resistivity data three survey lines were analyzed to characterize the fractured bedrock identify transmissive fractures beneath former Pease Air Force Base, Newington, N.H. The following used: caliper, fluid temperature conductivity, natural gamma radiation, electromagnetic optical acoustic televiewer, heat-pulse flowmeter. indicate several foliation fracture trends in bedrock. Two fracture-correlated lineaments trending...

PreviousNext No AccessSymposium on the Application of Geophysics to Engineering and Environmental Problems 2004Integration Geophysics, Geologic Mapping Water‐Level Monitoring Characterize Hydrogeology a Fractured Bedrock Site in Berlin, New HampshireAuthors: James R. DegnanStewart F. ClarkPhilip T. HarteJames DegnanU.S. Geological Survey, Pembroke, NH, Stewart ClarkU.S. Montpelier, VT, Philip HarteU.S. NHhttps://doi.org/10.4133/1.2923391 SectionsAboutPDF/ePub ToolsAdd favoritesDownload...

Abstract Factors affecting iron fouling in wet areas adjacent to roadways were investigated by collecting field rock cut and aqueous physicochemical data; developing exploratory predictive models; geochemical models. Basic data included the identification of from aerial imagery visits at 374 New Hampshire locations, their associated rock-fill sites. Based on water quality measurements 36 sites, occurrence was with higher values specific conductance, lower concentrations dissolved oxygen pH...

From 1966 to 2002, activities at the Standard Chlorine of Delaware chemical facility in New Castle County, resulted contamination groundwater, soils, and wetland sediment. In 2005, U.S. Geological Survey (USGS), partnership with Environmental Protection Agency, Region 3, Department Natural Resources Control began a multi-year investigation hydrogeologic framework hydrology confined aquifer system. The goals ongoing study site (the Potomac Aquifer Study) are determine hydraulic connection...

The U.S. Geological Survey, in cooperation with the New Hampshire measured fluid temperature of groundwater deep bedrock wells State order to characterize geothermal gradients bedrock. All selected for study had low water yields, which correspond flow from fractures. This reduced potential flow-induced changes that would mask natural gradient included this were privately owned, and permission use was obtained homeowners before logging. Maximum temperatures at bottom logs between 11.7 17.3...