We are starting with a mosaic of three different surveys. The newest survey has 3-foot resolution, but is resampled to 6 feet. Our next step is to run an automated sink-removal algorithm.
We still face the question of whether a 6-foot raster is too fine to represent groundwater flows, and how dangerous a single "unstable" cell really is.
Full modeled area
Conventional sink filling
Critical rainfall (mm/day steady state) at: Cohesion=2kPascals, phi=33° bulk density=2.0 T=65m/day