How to Rectify Offset Issues in InfoSWMM and H2OMap SWMM
1. Use Tool preferences to use elevation Rim Elevations (instead of depths) and elevation link offsets (instead of depths)
2. Once these flags are set you need to divide all of the link offsets by 2 to get the original values
3. The node and links should be correct
4. Check a portion of your model using the Input HGL tool to see if the offsets make sense
5. You should always check to see if you have the right elevation preferences
a. Offsets of depth and Node Max Depth or
b. Offsets of absolute elevation and Rim Absolute Elevations instead of Depths