On Tue, 11 Oct 2016, Laurent C. wrote:
It seems to be a problem from within the temporal framework. I never had this specific problem before, but I've run into some other obscure errors using TGRASS.
To summarize my understanding: Itzi will not work with my current data because of some issue with a tgrass module; r.lake does show water accumulation area by depth above a blockage at a defined x, y, z point; and other r.* modules (e.g., watershed. water.outlet, and sim.water) require defined stream channels. Have I missed a module that will map precipitation accumulation and flow across flat agricultural lands? A major concern (at least in the US) is nonpoint-source runoff of pollutants. One such land use is farmland. Regulators attempt to address such nonspecific-source water quality concerns using total maximum daily loads/limits (TMDL) to apportion maximum contributions of the parameter of concern by each potential contributor. Is there a grass7 work flow that can be applied to this situation? Rich _______________________________________________ grass-user mailing list firstname.lastname@example.org http://lists.osgeo.org/mailman/listinfo/grass-user