- Flashing lights, horns, or sirens.
- Increased or changed wildlife activity.
- Louder sound of rushing water.
- Previously exposed rocks or snags are covered with water.
- Clear water quickly becomes cloudy.
- Suddenly faster water currents.
- Never anchor a boat below a dam. Rapid surges in water levels can pull an anchored boat underwater in seconds.
- Beware of dangerous and unseen currents. Backrollers, eddies, and whirlpools can pull a boat upstream into a spillway and quickly capsize it.
- Boating above or below a dam can be very dangerous. Always maintain a safe distance from the dam.
- Keep your motor running when near a dam so that you are always ready to maneuver or leave the area quickly.
- Stay away from spillways. Changing currents and unpredictable waves make boat control difficult.
