PUBSLOT The pass utilises a syphon effect to regulate its flow. For low discharges, the baffles decrease the flow velocity and increase the water depth to facilitate fish passage. Baffles come in variety of designs. At larger discharges, baffles induce lower local velocities and generate recirculation regions. Canal and River Trust. In 1852-1854, the Ballisodare Fish Pass was built in County Sligo in Ireland to draw salmon into a river that had not supported a fishery.|{Turn|Flip} Your Slot Naga Emas {Into a|Right into a} {High|Excessive} Performing Machine