Major sources of nitrogen input and loss in the upper Snake River basin, Idaho and western Wyoming, 1990

Rupert, Michael G.

doi:10.3133/wri964008

1996

DOI: 10.3133/wri964008

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Major sources of nitrogen input and loss in the upper Snake River basin, Idaho and western Wyoming, 1990

Michael G. Rupert¹

Abstract: This report is an element of the comprehensive body of information developed as part of the NAWQA Program. The program depends heavily on the advice, cooperation, and information from many Federal, State, interstate, Tribal, and local agencies and the public. The assistance and suggestions of all are greatly appreciated.

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Cited by 5 publications

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A graphical modeling tool for evaluating nitrogen loading to and nitrate transport in ground water in the mid-Snake region, south-central Idaho

Clark¹,

Skinner²,

Pollock³

2006

Scientific Investigations Report

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A flow and transport model was created with a graphical user interface to simplify the evaluation of nitrogen loading and nitrate transport in the mid-Snake region in south-central Idaho. This model and interface package, the Snake River Nitrate Scenario Simulator, uses the U.S. Geological Survey's MODFLOW 2000 and MOC3D models. The interface, which is enabled for use with geographic information systems (GIS), was created using ESRI's royalty-free MapObjects LT software. The interface lets users view initial nitrogenloading conditions (representing conditions as of 1998), alter the nitrogen loading within selected zones by specifying a multiplication factor and applying it to the initial condition, run the flow and transport model, and view a graphical representation of the modeling results. The flow and transport model of the Snake River Nitrate Scenario Simulator was created by rediscretizing and recalibrating a clipped portion of an existing regional flow model. The new subregional model was recalibrated with newly available water-level data and spring and groundwater nitrate concentration data for the study area. An updated nitrogen input GIS layer controls the application of nitrogen to the flow and transport model. Users can alter the nitrogen application to the flow and transport model by altering the nitrogen load in predefined spatial zones contained within similar political, hydrologic, and size-constrained boundaries.

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A graphical modeling tool for evaluating nitrogen loading to and nitrate transport in ground water in the mid-Snake region, south-central Idaho

Clark¹,

Skinner²,

Pollock³

2006

Scientific Investigations Report

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Trends in groundwater levels, and orthophosphate and nitrate concentrations in the Middle Snake River Region, south-central Idaho

Skinner¹

2022

Scientific Investigations Report

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Probability of detecting elevated concentrations of nitrate in ground water in a six-county area of south-central Idaho

Skinner

Donato²

2003

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Major sources of nitrogen input and loss in the upper Snake River basin, Idaho and western Wyoming, 1990

Cited by 5 publications

References 6 publications

A graphical modeling tool for evaluating nitrogen loading to and nitrate transport in ground water in the mid-Snake region, south-central Idaho

A graphical modeling tool for evaluating nitrogen loading to and nitrate transport in ground water in the mid-Snake region, south-central Idaho

Trends in groundwater levels, and orthophosphate and nitrate concentrations in the Middle Snake River Region, south-central Idaho

Probability of detecting elevated concentrations of nitrate in ground water in a six-county area of south-central Idaho

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