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Dam / Reservoir Volume Study

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11-09-2011 11:50 AM
LisaD
by
Emerging Contributor
I was asked to calculate the volume within a reservoir and was asked to do it in Acrobat by tracing the contour lines.  Acrobat would then calculate the volume.  That was fine when the contour interval was 20 ft and the dam was 100 ft high, but now the contours are 2 ft with a 100 ft high dam.  I figured out how to calculate the volume in 3D analyst, but the engineer I am doing this for would like to be able to calculate the volume every 2 ft in height.  I am not an engineer so I don't understand why this is needed, but it may relate to knowing how much water can fit into a reservoir given various dam heights.  I used the slice tool but I am not really sure what the function is or if it will get me where I want to go.  Is there a way to calculate the volume of each 2ft slice in the reservoir?

I had also told this engineer about model builder.  He wondered if this could be set up in model builder to calculate the volume every 2 feet?
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JeffreySwain
Esri Regular Contributor
Once you have generated the reservioir/Dam combo, you can vary the plane height and measure the volume that way with the Surface Volume tool.  Then you can see what the volume will be at for different heights, every two feet.  If you are looking to see the volume between the two planes, then you may have to create some different surfaces and try the tool again to measure it.
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