The Mokelumne Fish Hatchery released monitoring data on November 7, 2023, showing the highest recorded number of Chinook salmon returning to the hatchery since record-keeping began in 1940.

Weekly Fish Passage at Woodbridge Dam, Week of 11/1/23 – 11/7/23.

East Bay Municipal Utility District (EBMUD) states, “2023 is now the highest salmon escapement season on record, surpassing 2017’s total count of 19,953.”  As of November 7, 2023, 20,167 fish passed the video monitoring window at Woodbridge Irrigation District Dam.

This data is preliminary and subject to change.


Rare observation of a striped bass using the Woodbridge Irrigation District Dam fish ladder on 11/2/23.

The Mokelumne River Day Use Area, located 15 miles east of Lodi off Highway 12, and at the base of Camanche Dam, is an access point to the Mokelumne River for visitors to view the Mokelumne River Fish Hatchery. During salmon spawning season, October through December, many large adult Chinook salmon can be seen returning from the ocean. November is the peak spawning season and hatchery visitors can watch staff collect salmon eggs. The Mokelumne River Fish Hatchery, operated by the California Department of Fish and Wildlife, is open seven days a week, from 7:00am to 3:00pm.

Watch the video below to see salmon spawning on the Mokelumne River at sunset last week.

Video by Sandi Starr, Lodi Grower and Environmental Science educator.


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