Why am I seeing positive head above the water table in my seepage Model (SEEP/W)?
Hi All,
I have a seepage model in SEEP/W where I am modeling a seepage flow due to storm surchage for a coastal flood wall. I'm looking at steady-state analyses (as an upper bound/worst case scenario with prolonged max flood water elevation) as well as transient analyses (with water surface rising/falling with storm and tides). In my steady state analyses, I'm seeing the same water surface elevation on both sides of the wall. I would expect to see some drop in head on either side of the wall. The transient anlyses are behaving moreso as expected but am still seeing positive total heads above the calculated water table. Any thoughts as to what may be causing this? Images attached for reference. The solid results output is the steady state and the multi-color is transient mid-storm step.
My boundary conditions are set as a drainage boundary on the protected side of the wall with water rate type boundary of 0 ft3/sec and "Potential Seepage Face Review" checked.
Thanks,
Matt