秋季奇努克流动计划

Chinook salmon lay their eggs below Hells Canyon Dam in the fall. The eggs need the right flow of water to develop, so we control the water released from Brownlee水库 from October through December, 直到蛋孵化. We keep the flow between 8,500 cubic feet per second (cfs) and 13,000 cfs.

To do this, we sometimes lower the water in Brownlee水库 在地狱峡谷大坝的上游. This enables Brownlee to absorb increased flows coming in while maintaining a steady flow going out. These lower water levels can limit our ability to generate hydropower through the three dams of the Hells Canyon Complex. We may buy power from other sources.

To monitor the health of the fall Chinook salmon population, the U.S. Department of Fish and Wildlife 服务 and hg8868皇冠下载 survey their nests (also called redds) in the fall. View a chart of our total annual fall 奇努克redd计数.