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I am using ArcGIS Desktop 10.4 to work on a dam project.

I have created a TIN with level curves (5 meters).

Level curves have a Z attributes so it's easy to create TIN

I have created polygons for zones where I wish implant my dam. I want to calculate volume between front of dam, water surface and natural field. I've tried to make a volume of polygon but my polygon does not intersect all TIN so that returns an error.

I tried to create a 3d line and a 3D polygon but I have no idea how I can use them, and I'm not sure how I can delete them.

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