Do now
- Go up early. Do not wait to go out late.
- Power off at the mains before water reaches the house.
- Move valuables and preps up high, if you have not already.
Then
- Treat everything floodwater has touched as contaminated. It carries sewage. Bleach is your friend for cleaning up.
Never
Related: B1 (Water), P2 (Everyday threats), P4 (Tripwires and stay-or-go)