Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 426420
Title The nitrate conflict between municipal water supply and agriculture the nimwag model
Author(s) Rijtema, P.E.; Hoeijmakers, T.J.; Kroes, J.G.
Source Wageningen : ICW (Nota / Instituut voor Cultuurtechniek en Waterhuishouding 1423) - 37
Department(s) Institute for land and water management research
Publication type Research report
Publication year 1987
Keyword(s) grondwaterstroming - watervoorziening - putten - watervoerende lagen - nitrificatie - denitrificatie - mest - infiltratie - modellen - groundwater flow - water supply - wells - aquifers - nitrification - denitrification - manures - infiltration - models
Categories Groundwater Hydrology / Water Supply
Abstract This description of the NIMWAG model has the same sequence as the computer program. The NIMWAG model calculates N03-N concentrations in the water extracted by a deep well. The model has been made operationel to execute calculations for 166 extraction areas. For each extraction area calculations have been made for 16 different fertilization alternatives. The model can be divided into 3 parts: a part with hydrological calculations, a part with fertilization calculations and a part to calculate the N03-N concentrations. The hydrological part is explained and calculates the spread of the feed in the extraction area and the residence times of the infiltrating precipitation excess. The fertilization level is calculated in dependence to the landuse in the extraction area and to the chosen fertilization alternative. The calculations of N03-N loads in the groundwater caused by the inflow of nitrate into the saturated zone and the denitrification in the saturated zone are explained.
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