topic Adding Values to a TIN from another TIN. or calculation differences in 3D Questions https://community.esri.com/t5/3d-questions/adding-values-to-a-tin-from-another-tin-or/m-p/157079#M991 <HTML><HEAD></HEAD><BODY><SPAN>I have created a Surface Elev Tin, and a Groundwater Elev. TIN.&nbsp; I want to be able to get a difference between the two.&nbsp; So the Surface elevation is 6ft and the GWE is 2 ft.&nbsp; Somewhere I want it to tell me that the depth to groundwater is 4'.&nbsp; I'd like to do this at any given point in the surface tin.&nbsp; I can identify on a point in the TIN and the results display, but I need to flag areas that are &lt;2 feet to groundwater from the surface.&nbsp; Either in a Depth to Groundwater tin, or another surface.&nbsp; thanks for the suggestions.</SPAN></BODY></HTML> Tue, 08 Mar 2011 01:07:46 GMT KevinKirmelewicz 2011-03-08T01:07:46Z Adding Values to a TIN from another TIN. or calculation differences https://community.esri.com/t5/3d-questions/adding-values-to-a-tin-from-another-tin-or/m-p/157079#M991 <HTML><HEAD></HEAD><BODY><SPAN>I have created a Surface Elev Tin, and a Groundwater Elev. TIN.&nbsp; I want to be able to get a difference between the two.&nbsp; So the Surface elevation is 6ft and the GWE is 2 ft.&nbsp; Somewhere I want it to tell me that the depth to groundwater is 4'.&nbsp; I'd like to do this at any given point in the surface tin.&nbsp; I can identify on a point in the TIN and the results display, but I need to flag areas that are &lt;2 feet to groundwater from the surface.&nbsp; Either in a Depth to Groundwater tin, or another surface.&nbsp; thanks for the suggestions.</SPAN></BODY></HTML> Tue, 08 Mar 2011 01:07:46 GMT https://community.esri.com/t5/3d-questions/adding-values-to-a-tin-from-another-tin-or/m-p/157079#M991 KevinKirmelewicz 2011-03-08T01:07:46Z