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Cover image for Groundwater quality in the Columbia Plateau and Snake River Plain basin-fill and basaltic-rock aquifers and the Hawaiian volcanic-rock aquifers, Washington, Idaho, and Hawaii, 1993-2005

Groundwater quality in the Columbia Plateau and Snake River Plain basin-fill and basaltic-rock aquifers and the Hawaiian volcanic-rock aquifers, Washington, Idaho, and Hawaii, 1993-2005

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Cover image for Numerical model simulations of nitrate concentrations in groundwater using various nitrogen input scenarios, mid-Snake region, South-Central Idaho

Numerical model simulations of nitrate concentrations in groundwater using various nitrogen input scenarios, mid-Snake region, South-Central Idaho

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Cover image for 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

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Cover image for Groundwater quality in the Columbia Plateau, Snake River Plain, and Oahu basaltic-rock and basin-fil aquifers in the northwestern United States and Hawaii, 1992-2010

Groundwater quality in the Columbia Plateau, Snake River Plain, and Oahu basaltic-rock and basin-fil aquifers in the northwestern United States and Hawaii, 1992-2010

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Cover image for Groundwater quality, age, and probability of contamination, Eagle River watershed valley-fill aquifer, north-central Colorado, 2006-2007

Groundwater quality, age, and probability of contamination, Eagle River watershed valley-fill aquifer, north-central Colorado, 2006-2007

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Cover image for Probability of detecting atrazine/desethyl-atrazine and elevated concentrations of nitrate (NO2+NO3-N) in ground water in the Idaho part of the Upper Snake River Basin

Probability of detecting atrazine/desethyl-atrazine and elevated concentrations of nitrate (NO2+NO3-N) in ground water in the Idaho part of the Upper Snake River Basin

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Cover image for Analysis of data on nutrients and organic compounds in ground water in the upper Snake River Basin, Idaho and western Wyoming, 1980-91

Analysis of data on nutrients and organic compounds in ground water in the upper Snake River Basin, Idaho and western Wyoming, 1980-91

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