Simulation of stream discharge and transport of nitrate and selected herbicides in the Mississippi River Basin

Stream discharge and the transport of nitrate, atrazine, and metolachlor in the Mississippi River Basin were simulated using the DAFLOW/BLTM hydrologic model. The simulated domain for stream discharge included river reaches downstream from the following stations in the National Stream Quality Accoun...

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Veröffentlicht in:Hydrological processes 2001-05, Vol.15 (7), p.1157-1167
Hauptverfasser: Broshears, Robert E., Clark, Gregory M., Jobson, Harvey E.
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creator Broshears, Robert E.
Clark, Gregory M.
Jobson, Harvey E.
description Stream discharge and the transport of nitrate, atrazine, and metolachlor in the Mississippi River Basin were simulated using the DAFLOW/BLTM hydrologic model. The simulated domain for stream discharge included river reaches downstream from the following stations in the National Stream Quality Accounting Network: Mississippi River at Clinton, IA; Missouri River at Hermann, MO; Ohio River at Grand Chain, IL; and Arkansas River at Little Rock, AR. Coefficients of hydraulic geometry were calibrated using data from water year 1996; the model was validated by favourable simulation of observed discharges in water years 1992–1994. The transport of nitrate, atrazine, and metolachlor was simulated downstream from the Mississippi River at Thebes, IL, and the Ohio River at Grand Chain. Simulated concentrations compared favourably with observed concentrations at Baton Rouge, LA. Development of this model is a preliminary step in gaining a more quantitative understanding of the sources and fate of nutrients and pesticides delivered from the Mississippi River Basin to the Gulf of Mexico. Published in 2001 by John Wiley & Sons, Ltd.
doi_str_mv 10.1002/hyp.208
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identifier ISSN: 0885-6087
ispartof Hydrological processes, 2001-05, Vol.15 (7), p.1157-1167
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1099-1085
language eng
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source Wiley Online Library Journals Frontfile Complete
subjects herbicides
metolachlor
Mississippi River
nitrate
river hydraulic modelling
transport
USA, Arkansas, Little Rock, Arkansas R
USA, Illinois, Grand Chain, Ohio R
USA, Illinois, Thebes, Mississippi R
USA, Iowa, Clinton, Mississippi R
USA, Louisiana, Baton Rouge, Mississippi R
USA, Missouri, Hermann, Missouri R
water quality
title Simulation of stream discharge and transport of nitrate and selected herbicides in the Mississippi River Basin
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