Prince William

Occoquan River Dam Siren Test Scheduled for November 18

Occoquan riverwalk. [Photo: Occoquan Town Government Facebook page]
“A test of the Occoquan River Dam siren will be held on Tuesday, November 18, 2025, at 10:00 am,” Visit Occoquan announced. “The siren is a loud whooping noise.”

“Who’s impacted? The impact zone includes areas in Prince William County & Fairfax County located immediately adjacent to the Occoquan River from the Town of Occoquan to Belmont Bay,” the organization added.

The test is part of Fairfax Water’s safety measures for residents, visitors, and businesses along the Occoquan River shoreline. The impact area includes the Town of Occoquan, nearby marinas, Occoquan Regional Park, and river-adjacent homes and businesses.

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