Existing conflicts or problems concerning groundwater in Norwegian river plains are outlined. Emphasis is placed on the effects of river regulation. Two methods of determining aquifer diffusivity are proposed. The methods require continuous recordings of river stage and groundwater level at the time of a flood peak or during periodic fluctuations of river stage.
The methods are applied to data from two Norwegian river plain aquifers and consistent results for aquifer diffusivity are obtained.
It is concluded that the proposed solutions represent a feasible and competitive way of obtaining aquifer parameters in Norwegian river plains.