
Record numbers of salmon and steelhead have returned to the Mokelumne River Fish Hatchery in recent years, but the outlook is even brighter with the release of a study that shows the possibility of the reintroduction of the iconic salmonid species in a 13.7 mile stretch of the Mokelumne above Lake Pardee.
The California Department of Fish and Wildlife reported a modern record of more than 19,900 fall-run Chinook salmon returned to spawn in the lower Mokelumne in the fall of 2017. The 2018 fall salmon returns were also impressive, with a total return of 17,474 fish.
These record runs have contributed greatly to the ocean recreational and commercial fishery over the past couple of years. The Mokelumne, a relatively small river, provided 33 percent of the Central Valley fall Chinooks caught in the recreational fishery and 43 percent of the commercial fishery in 2018, according to the Pacific Fishery Management Council.
“The advances in releases of salmon, coupled with the Mokelumne River Fish Hatchery Manager Bill Smith’s care of the fish, have resulted in big, strong fish that are in really good shape,” said John McManus, President of the Golden Gate Salmon Association. “The Mokelumne Hatchery has apparently discovered some type of magic in their stewardship of salmon.”
If a pilot study bears fruit, salmon and steelhead may be once again spawning in the Mokelumne above Pardee, making the magic taking place in CDFW and EBMUD's stewardship of the lower Mokelumne extend into some of the salmon's historic upstream habitat.
With that in mind, the Foothill Conservancy, East Bay Municipal Utility District, other nonprofit groups, businesses, state and local agencies, and tribal interests have been exploring the potential to restore fall-run Chinook salmon to the upper Mokelumne.