A wastewater spill that spurred warnings to stay out of the Russian River this week after a storm drenched Sonoma County was stopped Thursday morning, officials said. Tuesday’s heavy rainfall overwhelmed a local wastewater treatment facility, the Russian River Treatment Plant in Guerneville, which received flows at a rate of around 4 million gallons per day — nearly six times its average dry-weather design of 710,000 gallons. With no additional storage available, millions of gallons of untreated wastewater traveled roughly a quarter-mile through a forested redwood grove before entering the mainstem of the river. … The spill was officially stopped at 6:50 a.m. Thursday.

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