The proposed research is to develop a science-based approach for design and evaluation of alternatives that may enhance fish entrainment or reduce fish passage through a diversion channel at a river juncture. Downstream migrating juvenile salmon will be the target. It will answer the following research questions: (1) Can fish passage through a diversion channel at a river juncture be predicted using a science-based, numerical modeling tool? (2) Can the diversion channel may be manipulated to increase the fish entrainment? (3) Can the effect of a physical boom, as a fish barrier, on fish passage through the diversion channel be predicted? (4) What are the key hydrodynamic features that fish will respond to?
