About weir

Dear EFDC team and users: Why does the weir have no effect on the results? I have adjusted the height of the weir from 0.1 to 1000 meters for several times. However, the simulated water levels and velocities of the nearby grids remain the same. In other words, the weir cannot block any water flowing from upstream to downstream. The setting of the weir is shown in pictures 1 and 2.

It is likely you have not applied the necessary masks to prevent flow across the cells where the structure is located. You can run the demo models on our site to better see how this is applied. DM-11 Culvert with Tidal Signal – EE Modeling System