Leslie A DeSimone
Leslie DeSimone is a Hydrologist in the New England Water Science Center.
Leslie serves as the Center Water-Quality Specialist and as an analyst for the National Water-Quality Assessment Project.
Leslie started with USGS in 1988 and has worked on a broad range of studies on topics such as contaminant occurrence and transport in groundwater, surface-water quality trends and loads, and groundwater flow and availability.
Current work includes:
- Machine-learning models of groundwater quality in the mid-Atlantic region
- Technical assistance on water-quality data and studies in New England
- Water-quality database management
Recent work includes:
- National compilations of water quality in U.S. Principal Aquifers and in domestic wells
- Mapping bedrock well yield in eastern Massachusetts
Professional Experience
Hydrologist, U.S. Geological Survey, New England Water Science Center, 1988 to Present
Education and Certifications
Ph.D. Geology, Boston University
M.A. Geology, Boston University
B.A. Geology, St. John's College, Annapolis, MD
Science and Products
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Lithogeochemical character of near-surface bedrock in the New England coastal basins
This geographic information system (GIS) data layer shows the generalized lithologic and geochemical, termed lithogeochemical, character of near-surface bedrock in the New England Coastal Basin (NECB) study area of the U.S. Geological Survey's National Water Quality Assessment (NAWQA) Program. The area encompasses 23,000 square miles in western and central Maine, eastern Massachusetts, most of Rh
Authors
Gilpin R. Robinson, Joseph D. Ayotte, Denise L. Montgomery, Leslie A. DeSimone
Simulation of ground-water flow and evaluation of water-management alternatives in the upper Charles River basin, eastern Massachusetts
Ground water is the primary source of drinking water for towns in the upper Charles River Basin, an area of 105 square miles in eastern Massachusetts that is undergoing rapid growth. The stratified-glacial aquifers in the basin are high yield, but also are thin, discontinuous, and in close hydraulic connection with streams, ponds, and wetlands. Water withdrawals averaged 10.1 million gallons per d
Authors
Leslie A. DeSimone, Donald A. Walter, John R. Eggleston, Mark T. Nimiroski
Statewide water-quality network for Massachusetts
A water-quality monitoring program is proposed that would provide data to meet multiple information needs of Massachusetts agencies and other users concerned with the condition of the State's water resources. The program was designed by the U.S. Geological Survey and the Massachusetts Department of Environmental Protection, Division of Watershed Management, with input from many organizations invol
Authors
Leslie A. DeSimone, Peter A. Steeves, Marc James Zimmerman
Ground-water quality near a septage-treatment facility, Orleans, Massachusetts, 1997-98
No abstract available.
Authors
Leslie A. DeSimone, Kirk P. Smith
Lithogeochemical character of the near-surface bedrock in the Connecticut, Housatonic, and Thames River Basins
This data layer shows the generalized lithologic and geochemical (lithogeochemical) character of near-surface bedrock in the Connecticut, Housatonic, and Thames River Basins and several other small basins that drain into Long Island Sound from Connecticut. The area includes most of Connecticut, western Massachusetts, eastern Vermont, western New Hampshire, and small parts of Rhode Island, New York
Authors
Gilpin R. Robinson, John D. Peper, Peter A. Steeves, Leslie A. DeSimone
A vulnerability assessment of public-supply wells in Rhode Island
No abstract available.
Authors
Leslie A. DeSimone, Lance J. Ostiguy
Use of computer programs STLK1 and STWT1 for analysis of stream-aquifer hydraulic interaction
Quantifying the hydraulic interaction of aquifers and streams is important in the analysis of stream base fow, flood-wave effects, and contaminant transport between surface- and ground-water systems. This report describes the use of two computer programs, STLK1 and STWT1, to analyze the hydraulic interaction of streams with confined, leaky, and water-table aquifers during periods of stream-stage f
Authors
Leslie A. DeSimone, Paul M. Barlow
Nitrogen transport and transformations in a shallow aquifer receiving wastewater discharge: A mass balance approach
Nitrogen transport and transformations were followed over the initial 3 years of development of a plume of wastewater-contaminated groundwater in Cape Cod, Massachusetts. Ammonification and nitrification in the unsaturated zone and ammonium sorption in the saturated zone were predominant, while loss of fixed nitrogen through denitrification was minor. The major effect of transport was the oxidatio
Authors
Leslie A. DeSimone, Brian L. Howes
A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992
Physical, chemical, and microbial processes controlled transport of a nitrogen-rich ground-water plume through a glacial aquifer. Lithologic heterogeneity and vertical head gradients influenced plume movement and geometry. Nitrate was the predominant nitrogen form and oxygen was depleted in the ground-water plume. However, denitrification transformed only 2 percent of plume nitrogen because of lim
Authors
Leslie A. DeSimone, Paul M. Barlow, Brian L. Howes
A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992
No abstract available.
Authors
Leslie A. DeSimone, Paul M. Barlow, Brian Louis Howes
Hydrogeologic, water-quality and biogeochemical data collected at a septage-treatment facility, Orleans, Cape Cod, Massachusetts, October 1988 through December 1992
Hydrogeologic, water-quality, and biogeochemical data were collected at the site of a septage- treatment facility in Orleans, Massachusetts, from October 1988 through December 1992, where a nitrogen-rich effluent is discharged to the underlying glacial aquifer. The data were collected as part of a study done by the U.S. Geological Survey, in cooperation with the Massachusetts Department of Environ
Authors
Leslie A. DeSimone, Brian Louis Howes
Characteristics of low-slope streams that affect O2 transfer rates
Multiple-regression techniques were used to derive the reaeration coefficients estimating equation for low sloped streams: K2 = 3.83 MBAS-0.41 SL0.20 H-0.76, where K2 is the reaeration coefficient in base e units per day; MBAS is the methylene blue active substances concentration in milligrams per liter; SL is the water-surface slope in foot per foot; and H is the mean-flow depth in feet. Fourteen
Authors
Gene W. Parker, Leslie A. DeSimone
Science and Products
Filter Total Items: 13
No Result Found
Filter Total Items: 36
Lithogeochemical character of near-surface bedrock in the New England coastal basins
This geographic information system (GIS) data layer shows the generalized lithologic and geochemical, termed lithogeochemical, character of near-surface bedrock in the New England Coastal Basin (NECB) study area of the U.S. Geological Survey's National Water Quality Assessment (NAWQA) Program. The area encompasses 23,000 square miles in western and central Maine, eastern Massachusetts, most of Rh
Authors
Gilpin R. Robinson, Joseph D. Ayotte, Denise L. Montgomery, Leslie A. DeSimone
Simulation of ground-water flow and evaluation of water-management alternatives in the upper Charles River basin, eastern Massachusetts
Ground water is the primary source of drinking water for towns in the upper Charles River Basin, an area of 105 square miles in eastern Massachusetts that is undergoing rapid growth. The stratified-glacial aquifers in the basin are high yield, but also are thin, discontinuous, and in close hydraulic connection with streams, ponds, and wetlands. Water withdrawals averaged 10.1 million gallons per d
Authors
Leslie A. DeSimone, Donald A. Walter, John R. Eggleston, Mark T. Nimiroski
Statewide water-quality network for Massachusetts
A water-quality monitoring program is proposed that would provide data to meet multiple information needs of Massachusetts agencies and other users concerned with the condition of the State's water resources. The program was designed by the U.S. Geological Survey and the Massachusetts Department of Environmental Protection, Division of Watershed Management, with input from many organizations invol
Authors
Leslie A. DeSimone, Peter A. Steeves, Marc James Zimmerman
Ground-water quality near a septage-treatment facility, Orleans, Massachusetts, 1997-98
No abstract available.
Authors
Leslie A. DeSimone, Kirk P. Smith
Lithogeochemical character of the near-surface bedrock in the Connecticut, Housatonic, and Thames River Basins
This data layer shows the generalized lithologic and geochemical (lithogeochemical) character of near-surface bedrock in the Connecticut, Housatonic, and Thames River Basins and several other small basins that drain into Long Island Sound from Connecticut. The area includes most of Connecticut, western Massachusetts, eastern Vermont, western New Hampshire, and small parts of Rhode Island, New York
Authors
Gilpin R. Robinson, John D. Peper, Peter A. Steeves, Leslie A. DeSimone
A vulnerability assessment of public-supply wells in Rhode Island
No abstract available.
Authors
Leslie A. DeSimone, Lance J. Ostiguy
Use of computer programs STLK1 and STWT1 for analysis of stream-aquifer hydraulic interaction
Quantifying the hydraulic interaction of aquifers and streams is important in the analysis of stream base fow, flood-wave effects, and contaminant transport between surface- and ground-water systems. This report describes the use of two computer programs, STLK1 and STWT1, to analyze the hydraulic interaction of streams with confined, leaky, and water-table aquifers during periods of stream-stage f
Authors
Leslie A. DeSimone, Paul M. Barlow
Nitrogen transport and transformations in a shallow aquifer receiving wastewater discharge: A mass balance approach
Nitrogen transport and transformations were followed over the initial 3 years of development of a plume of wastewater-contaminated groundwater in Cape Cod, Massachusetts. Ammonification and nitrification in the unsaturated zone and ammonium sorption in the saturated zone were predominant, while loss of fixed nitrogen through denitrification was minor. The major effect of transport was the oxidatio
Authors
Leslie A. DeSimone, Brian L. Howes
A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992
Physical, chemical, and microbial processes controlled transport of a nitrogen-rich ground-water plume through a glacial aquifer. Lithologic heterogeneity and vertical head gradients influenced plume movement and geometry. Nitrate was the predominant nitrogen form and oxygen was depleted in the ground-water plume. However, denitrification transformed only 2 percent of plume nitrogen because of lim
Authors
Leslie A. DeSimone, Paul M. Barlow, Brian L. Howes
A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992
No abstract available.
Authors
Leslie A. DeSimone, Paul M. Barlow, Brian Louis Howes
Hydrogeologic, water-quality and biogeochemical data collected at a septage-treatment facility, Orleans, Cape Cod, Massachusetts, October 1988 through December 1992
Hydrogeologic, water-quality, and biogeochemical data were collected at the site of a septage- treatment facility in Orleans, Massachusetts, from October 1988 through December 1992, where a nitrogen-rich effluent is discharged to the underlying glacial aquifer. The data were collected as part of a study done by the U.S. Geological Survey, in cooperation with the Massachusetts Department of Environ
Authors
Leslie A. DeSimone, Brian Louis Howes
Characteristics of low-slope streams that affect O2 transfer rates
Multiple-regression techniques were used to derive the reaeration coefficients estimating equation for low sloped streams: K2 = 3.83 MBAS-0.41 SL0.20 H-0.76, where K2 is the reaeration coefficient in base e units per day; MBAS is the methylene blue active substances concentration in milligrams per liter; SL is the water-surface slope in foot per foot; and H is the mean-flow depth in feet. Fourteen
Authors
Gene W. Parker, Leslie A. DeSimone