Modeling Underperforming Pump and Surface Storage Volume (Civilstorm Connect Edition Update 3)

Hello, 

I'm trying to determine the volume and depth of water on the surface of a catch basin inlet (CB-62), due to an underperforming pump at the outlet of a storm drain system. 

I get a large continuity error and I can't figure out why. The error is likely due to the large "Total System Outflow Volume", which is inconsistent with the Total System Inflow Volume (which is correct as shown), but I don't

know how to troubleshoot this. 

My initial approach to figure out the surface storage is the following:

When I run the model (ignoring the continuity error), looking at CB-62, at 15.95 hrs, I get a flow of 6.05 cfs, volume = 1.403 acft. These values reflect the hydrograph right before water begins to pond in CB-62.

The total volume of this hydrograph is 2.46 acft

The provided surface storage at CB-62 = 1.33 acft (this is represented in the "Surface Depth-Area Curve" in CB-62)

2.46-1.403= 1.06 acft < 1.33acft. This would suggest that the surface storage at CB-62 will is maintained within the defined surface storage limits. 

However, after taking a closer look and graphing the CB-62, using Results (Extended Node)->"Depth (Flooding)" I see a depth beyond the 1.9-ft I had specified. Depth shown on the graph is 3.73-ft, suggesting water

ponds beyond the specified surface area. So, therefore, I'm not 100% sure my initial approach above is valid.

Any help would be very much appreciated. Files are attached. 

Best,

-Mike

Storm Drain Hydraulics.stswpkg.zip