Bruce Lindsey (Former Employee)
Science and Products
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Methods for evaluating temporal groundwater quality data and results of decadal-scale changes in chloride, dissolved solids, and nitrate concentrations in groundwater in the United States, 1988-2010 Methods for evaluating temporal groundwater quality data and results of decadal-scale changes in chloride, dissolved solids, and nitrate concentrations in groundwater in the United States, 1988-2010
Decadal-scale changes in groundwater quality were evaluated by the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program. Samples of groundwater collected from wells during 1988-2000 - a first sampling event representing the decade ending the 20th century - were compared on a pair-wise basis to samples from the same wells collected during 2001-2010 - a second sampling...
Authors
Bruce D. Lindsey, Michael G. Rupert
Quality of major ion and total dissolved solids data from groundwater sampled by the National Water-Quality Assessment Program, 1992–2010 Quality of major ion and total dissolved solids data from groundwater sampled by the National Water-Quality Assessment Program, 1992–2010
Proper interpretation of water quality requires consideration of the effects that contamination bias and sampling variability might have on measured analyte concentrations. The effect of contamination bias and sampling variability on major ion and total dissolved solids data in water samples collected in 48 of the 52 National Water-Quality Assessment Program study units from 1992–2010 is...
Authors
Eliza L. Gross, Bruce D. Lindsey, Michael G. Rupert
Factors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002 Factors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002
Chemical and microbiological analyses of water from 230 wells and 35 springs in the Valley and Ridge Physiographic Province, sampled between 1993 and 2002, indicated that bedrock type (carbonate or siliciclastic rock) and land use were dominant factors influencing groundwater quality across a region extending from northwestern Georgia to New Jersey. The analyses included naturally...
Authors
Gregory C. Johnson, Tammy M. Zimmerman, Bruce D. Lindsey, Eliza L. Gross
Contributions of Phosphorus from Groundwater to Streams in the Piedmont, Blue Ridge, and Valley and Ridge Physiographic Provinces, Eastern United States Contributions of Phosphorus from Groundwater to Streams in the Piedmont, Blue Ridge, and Valley and Ridge Physiographic Provinces, Eastern United States
Phosphorus from natural and human sources is likely to be discharged from groundwater to streams in certain geochemical environments. Water-quality data collected from 1991 through 2007 in paired networks of groundwater and streams in different hydrogeologic and land-use settings of the Piedmont, Blue Ridge, and Valley and Ridge Physiographic Provinces in the eastern United States were...
Authors
Judith M. Denver, Charles A. Cravotta, Scott W. Ator, Bruce D. Lindsey
Relations between sinkhole density and anthropogenic contaminants in selected carbonate aquifers in the eastern United States Relations between sinkhole density and anthropogenic contaminants in selected carbonate aquifers in the eastern United States
The relation between sinkhole density and water quality was investigated in seven selected carbonate aquifers in the eastern United States. Sinkhole density for these aquifers was grouped into high (>25 sinkholes/100 km2), medium (1–25 sinkholes/100 km2), or low (
Authors
Bruce D. Lindsey, Brian G. Katz, Marian P. Berndt, Ann F. Ardis, Kenneth A. Skach
Factors affecting water quality in selected carbonate aquifers in the United States, 1993-2005 Factors affecting water quality in selected carbonate aquifers in the United States, 1993-2005
Carbonate aquifers are an important source of water in the United States; however, these aquifers can be particularly susceptible to contamination from the land surface. The U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program collected samples from wells and springs in 12 carbonate aquifers across the country during 1993–2005; water-quality results for 1,042 samples...
Authors
Bruce D. Lindsey, Marian P. Berndt, Brian G. Katz, Ann F. Ardis, Kenneth A. Skach
Science and Products
Filter Total Items: 13
Filter Total Items: 17
No Result Found
Filter Total Items: 59
Methods for evaluating temporal groundwater quality data and results of decadal-scale changes in chloride, dissolved solids, and nitrate concentrations in groundwater in the United States, 1988-2010 Methods for evaluating temporal groundwater quality data and results of decadal-scale changes in chloride, dissolved solids, and nitrate concentrations in groundwater in the United States, 1988-2010
Decadal-scale changes in groundwater quality were evaluated by the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program. Samples of groundwater collected from wells during 1988-2000 - a first sampling event representing the decade ending the 20th century - were compared on a pair-wise basis to samples from the same wells collected during 2001-2010 - a second sampling...
Authors
Bruce D. Lindsey, Michael G. Rupert
Quality of major ion and total dissolved solids data from groundwater sampled by the National Water-Quality Assessment Program, 1992–2010 Quality of major ion and total dissolved solids data from groundwater sampled by the National Water-Quality Assessment Program, 1992–2010
Proper interpretation of water quality requires consideration of the effects that contamination bias and sampling variability might have on measured analyte concentrations. The effect of contamination bias and sampling variability on major ion and total dissolved solids data in water samples collected in 48 of the 52 National Water-Quality Assessment Program study units from 1992–2010 is...
Authors
Eliza L. Gross, Bruce D. Lindsey, Michael G. Rupert
Factors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002 Factors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002
Chemical and microbiological analyses of water from 230 wells and 35 springs in the Valley and Ridge Physiographic Province, sampled between 1993 and 2002, indicated that bedrock type (carbonate or siliciclastic rock) and land use were dominant factors influencing groundwater quality across a region extending from northwestern Georgia to New Jersey. The analyses included naturally...
Authors
Gregory C. Johnson, Tammy M. Zimmerman, Bruce D. Lindsey, Eliza L. Gross
Contributions of Phosphorus from Groundwater to Streams in the Piedmont, Blue Ridge, and Valley and Ridge Physiographic Provinces, Eastern United States Contributions of Phosphorus from Groundwater to Streams in the Piedmont, Blue Ridge, and Valley and Ridge Physiographic Provinces, Eastern United States
Phosphorus from natural and human sources is likely to be discharged from groundwater to streams in certain geochemical environments. Water-quality data collected from 1991 through 2007 in paired networks of groundwater and streams in different hydrogeologic and land-use settings of the Piedmont, Blue Ridge, and Valley and Ridge Physiographic Provinces in the eastern United States were...
Authors
Judith M. Denver, Charles A. Cravotta, Scott W. Ator, Bruce D. Lindsey
Relations between sinkhole density and anthropogenic contaminants in selected carbonate aquifers in the eastern United States Relations between sinkhole density and anthropogenic contaminants in selected carbonate aquifers in the eastern United States
The relation between sinkhole density and water quality was investigated in seven selected carbonate aquifers in the eastern United States. Sinkhole density for these aquifers was grouped into high (>25 sinkholes/100 km2), medium (1–25 sinkholes/100 km2), or low (
Authors
Bruce D. Lindsey, Brian G. Katz, Marian P. Berndt, Ann F. Ardis, Kenneth A. Skach
Factors affecting water quality in selected carbonate aquifers in the United States, 1993-2005 Factors affecting water quality in selected carbonate aquifers in the United States, 1993-2005
Carbonate aquifers are an important source of water in the United States; however, these aquifers can be particularly susceptible to contamination from the land surface. The U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program collected samples from wells and springs in 12 carbonate aquifers across the country during 1993–2005; water-quality results for 1,042 samples...
Authors
Bruce D. Lindsey, Marian P. Berndt, Brian G. Katz, Ann F. Ardis, Kenneth A. Skach