Fairfax Water will test the Occoquan Dam Siren warning system on Wednesday, November 20, at 10 a.m. The sirens are intended to alert people near the Occoquan River to seek higher ground in case of a dam failure.

Press Release from the Town of Occoquan:

On Wednesday, November 20, 2024, at 10:00 a.m., Fairfax Water will conduct its annual test of the Occoquan Dam Siren warning system. Sirens in this warning system are designed to alert people to seek higher ground in the highly unlikely event that there is ever a massive failure of the Occoquan River Dam. The impact zone includes areas in Prince William and Fairfax Counties located immediately adjacent to the Occoquan River from the Town of Occoquan to Belmont Bay. For more information, including to hear what the siren sounds like, go to https://www.fairfaxwater.org/occoquan-reservoir/occoquan-dam-siren.