UPDATE: A colleague found an excellent Win-TR20 tutorial. I recreated the model from scratch following the tutorial step-by-step, and the model now runs as it should. If anyone would like this tutorial, PM me.
I was hoping someone could help me, a first time user of Win-TR20, figure out why the model is generating runoff from only one of 7 subwatersheds, for only 1 entered storm out of 4 (the 1-year, out of the 1, 2, 10, and 100-year storms.)
In our model of a university campus, Sub-Areas SP1, SP2...