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Hydrogeological situation and groundwater monitoring in the area of the 'Dollart Port Project' in Lower Saxony, Federal Republic of Germany
Münstermann, D.; Josopait, V. (1989). Hydrogeological situation and groundwater monitoring in the area of the 'Dollart Port Project' in Lower Saxony, Federal Republic of Germany. Natuurwet. Tijdschr. 70(1-4): 65-74
In: Natuurwetenschappelijk Tijdschrift. L. Walschot/Natuur- en Geneeskundige Vennootschap: Gent. ISSN 0770-1748, meer
Ook verschenen in:
De Breuck, W.; Walschot, L. (Ed.) (1989). Proceedings of the 10th Salt-Water Intrusion Meeting Ghent (Belgium), 16-20 May 1988. Natuurwetenschappelijk Tijdschrift, 70(1-4). Natuurwetenschappelijk Tijdschrift: Gent. 408 pp., meer
Peer reviewed article  
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  • Münstermann, D.
  • Josopait, V.
Abstract
    Groundwater drawdown will be necessary during the construction of the projected harbour expansion near Emden ("Dollarthafen") .This will have consequences for the groundwater table and the hydrogeological situation in the surrounding area. A large amount of groundwater data has been made available for working out a plan for monitoring during and after construction of the harbour and to provide documentation about the natural, uninfluenced groundwater table without drawdown. The study area is north of the river Ems and consists of coastal marshes and polders. The aquifer consists of Quaternary and Pliocene sand and gravel, covered by low-permeability Holocene sediments. The inland groundwater is influenced by salt-water intrusion from the sea. The groundwater table and groundwater movement in the confined aquifer are influenced by the tidal range of the Ems, by the inland groundwater situation outside the tidal influence, the climatic conditions, atmospheric pressure, etc.Manually and automaticaly monitored groundwater observation wells, weather stations, and chemical groundwater analysis yield information on hydraulic and hydrochemical correlation and tidal effects.The ground-water monitoring plan, taking into account account all of the most important factors, is to provide information about how large the drawdown is in the hinterland and how large an area is influenced by it.
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