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Screening of regional groundwater contamination with agrochemicals and comparison with monitoring observations

Author(s): S. Fuest, J. Berlekamp, M. Klein & M. Matthies Abstract: The Hase catchment (2000 km^ ) in Western Lower Saxony, Germany, cov- ers almost the whole district of Osnabriick. In this area screening results for regional groundwater vulnerability were compared with widely distributed monitoring data. The local public health service delivers monitoring data from 7500 shallow drinking water wells. 35 000 nitrate measurements have been taken over 15 years. This data was used to produce regional nitrate contamination maps of the top aquifer. Spatially referenced environmental data such as land-use patterns, livestock figures, soil, digital elevation model data, and meteorological data are stored in a Geographical Information Sys- tem (ARC/INFO). The simple spatial overlay-algorithm of the DR... Pages: 10 Size: 1,098 kb Paper DOI: 10.2495/GIS980061

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