Thank you for your insight. I will try breaking the BC line based on the elevation variances, as you suggested.
Have you tried clicking on the BC line is RAS Mapper to plot WSE vs. time? I have tried doing so with a number of models, and they all indicate WSE is constant in time. This can’t be possible as there is no flow at the beginning of the simulation. I’m wondering if this is just an issue with the RAS Mapper.