The Jack Chinook adult passage counts are the sum of hatchery spring, hatchery summer, wild spring, and wild summer jack chinook as reported by WDFW and Chelan PUD. Steelhead Counts: The Steelhead parameter includes both hatchery and wild counts. Prior to wild steelhead data was not published on a daily basis. 7 Day and YTD Adult Counts The Fish Passage Center (FPC) provides current and historic data on salmon and steelhead passage in the main stem Snake and Columbia river basins.
Fremont Weir Adult Fish Passage Modification Project In , Reclamation and the California Department of Water Resources (DWR) began the Fremont Weir Adult Fish Passage Modification Project to improve adult fish passage at the Fremont Weir and along the Tule Canal in the Yolo Bypass. The FCRPS BiOp sets adult fish survival standards for each interior Columbia Basin ESA-listed species. Survival estimates (shown in the chart above) are designed to isolate the effects of dam passage from harvest-related mortality and straying, but unreported harvest and inaccurate stray rates still .
More information about adult fish passage and migration is provided in the Adult Salmon Passage recommendation and in the new technical recommendation Predation. Wanapum Dam, There were no adult passage fish counts at Wanapum Dam in due to a fracture discovered on the spillway in February The Reservoir elevation was lowered to reduce stress on the structure. The lowered reservoir made the regular fish ladder facilities and counting equipment inoperable.
The Fremont Weir Adult Fish Passage Modification Project provides a new channel to minimize fish stranding. “Without this project, endangered fish would continue to perish in large numbers each year, as they have since the Fremont Weir was constructed nearly a century ago,” said DWR Deputy Director Kristopher Tjernell. The diversion dam is just three miles downstream from the Howard Hanson Dam, and has already been improved with a trap for adult fish passage. Fish captured in the trap will be trucked above the.
It would take approximately 2–3 days for an adult steelhead to travel 20 miles, from the mouth of the Los Angeles River in Long Beach, to the Fish Passage & Habitat . Photo Courtesy of Dennis Schwartz US Army Corps of Engineers Photo of The Dalles Dam Spillwall March Fish Passage Plan Corps of Engineers Projects.