Modify the existing Opal Springs Hydroelectric project. Construct new vertical slot fish ladder, modify the existing diversion crest to increase the pool impoundment elevation, install horizontal drains, pre-stressed ground anchors (to support fish ladder construction), mass excavation and install a temporary shoring wall along the river abutment. Install open standpipe piezometer, pneumatic crest gate and control building, compressors, piping, fiber optics, electrical, and tie in to the existing project control system, construct a spillway chute, and modify the existing powerhouse intake and left abutment.
This project opens up over 125 miles of habitat to anadromous fish in the Crooked River watershed, and is pivotal to the broader reintroduction of anadromous fish into the Upper Deschutes Basin upstream of Lake Billy Chinook and the Pelton Round-Butte Hydroelectric project.
- Location: Madras, Oregon
- Cost: $9,390,068
- Owner: Deschutes Valley Water District
- Designer: CH2MHill/Otak
- Construction Period: 12/2017 - 12/2019