I am not sure the planned modification will change the fish loss much. The trick there is a lot of surface area on the screen. I use hog panels with 1/2" mesh fastened to the outside using hog rings. My panels form a "U" around the drain with the side runs cut to taper up the banks on either side of the drain pipe such that the top of all the panels are level. The smaller mesh can be cut shorter that the height of the hog panels so high water will flow over it if a gully washer happens. Not sure if I described this well enough to understand.
Understood completely... thanks Rah. My main focus is to get the water level up more than the fish loss.
Thanks again!
