GHD was awarded the contract to develop the 30-percent design
drawings for this site as well as the next upstream barrier and two
related fish screen projects. The fish passage improvements
will involve a complex vertical slot fish ladder with a roughened
channel entrance and multiple automated exit gates to improve
juvenile and adult salmonid migration over the flood control drop
structure and the thirteen foot high inflatable rubber dam No. 1 in
inflated and deflated positions.