Will the fish be able to swim against a flow like this? At the intake end there is a 90 degree bend with about a 20" vertical rise to the ground level. As the level in the dry dam section drops the flow decreases but the vertical section of the pipe isn't very full at all.
![](https://i.ibb.co/gFqqFrr/vlcsnap-2019-02-28-11h27m37s766.jpg)