Volume of dams at differing elevations

Discussion created by tal88 on Dec 19, 2012
Latest reply on Jan 13, 2013 by tal88

I'm trying to calculate the potential volume of dams (above the ground/water level) at different elevations/stages (and/or the potential water area). I want to calculate the area and volume at 20 different elevations/stages for each dam and I have up to 50,000 polygons to calculate this for. I have the maximum polygon extent of each dam and a working model in modelbuilder. Each dam takes 30-50sec to calculate the area (the 20 different calculations) , which I can then use to calculate the volume, but runs out of memory when I try to run the tool for only 1,000 dams.

I have tried to use the Surface Volume tool but the tool gives incorrect values (especially the volume calculation). But, I think this tool could really help with the runtimes and memory issue.

I have tried to use the Tabulate Area tool but it has a limited allowable number of fields (approx 200). I am using a integer difference grid.

I have tried the Zonal Histogram tool but it seems to have a field/zone limit as well..?

I am using a 2m DEM and have a difference grid up to the maximum level/stage.

Does anyone have any suggestions?