Abstract: An apparatus and method for continuously cleaning fish screens located in wetland diversions which are subject to tidal fluctuations, as well as in river and stream diversions, provides a brush or wiper member attached to a flotation device to clean the fish screen continuously. The apparatus can utilize conventional power where available, or utilize available and renewable energy sources such as tidal influx, solar or wind power, as well as gravity water flow.

Abstract: A self-cleaning screen and method for screening water for hydraulic turbine intake diversions is disclosed. A check dam is established across a river on the downstream side of a side channel weir which is at a lower elevation than the dam. A fish transport trough is laterally spaced from the weir at a lower elevation and has an inlet upstream of the weir and an outlet downstream of the dam. A screen having a concave profile is connected between the weir and the trough to remove debris from water flowing over the weir. Water flowing through the screen enters a separate channel under the screen for diversion to a hydraulic turbine inlet water application. Intermittent surges of water over the weir flush debris off the edge of the screen into the trough to clean the screen.