For the next two weeks, both the fish ladder and viewing room will be closed at the Locks while crews make some electrical upgrades.
The U.S. Army Corps of Engineers will be working on the fish ladder instrumentation and sensors that run nonstop, which are required to prevent a possible disruption during the adult salmon upstream spawning migration.
According to the Army Corps, a computerized control system monitors several key parameters, including pool, diffuser well and tide elevations, adjusting valve gates and weirs for optimal conditions. Those systems are critical to keep the fish ladder operating correctly.
The restroom next to the fish ladder will also be closed, but the ramp and above-ground plaza will remain open during the closure, which is expected to end on March 11.
