Water quality alerts that would have impacted this weekend's Head of the Charles Regatta were lifted on Thursday.

Parts of the Charles River have been under a health advisory for a cyanobacteria algae bloom for weeks — the blue-green algae can sicken people and pets.

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But on Thursday, the Boston Public Health Commission lifted the advisories for Magazine Beach and the Boston University DeWolfe Boathouse. The agency shared a map showing the areas affected by the advisory, which are downstream of the races' starting line and course.

"This change means the Head Of The Charles Regatta will not be impacted by the health advisory," the update said. Ready, Set, Row! HOCR Race Director Brenden Mulvey told us everything

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