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New study domonstrates scale-dependence of simulated stream-aquifer interactions

The results of this work means conductances need to be recalibrated as grid size changes, and that the same parameter value generally cannot be used for parent and child grids when local refinement is used. Different choices for calculating the stream conductances and the number of model layers can be important to simulated gains and losses, as demonstrated in figures 11 and 12 from the report, as shown below.

Mehl, S.W. and Hill, M.C., 2010, Grid-size Dependence of Cauchy Boundary Conditions used to Simulate Stream-Aquifer Interactions: Advances in Water Resources.