Deputies responded to the reported drowning about 5:35 p.m. at the Hacienda Bridge, according to the Sonoma County Sheriff's Office's Facebook page.
Video in the media player above is from a previous update
MORE: Oakland teen, SF man identified as victims in separate drownings in Russian River
The man was seen using a rope swing to jump into the water.
When he didn't surface, crews started a search and rescue response, but their efforts shifted into a recovery operation Saturday evening.
The victim has not been identified.
This comes after an Oakland teen and San Francisco man drowned in two separate incidents in the Russian River on July 13.
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