ChicNmom
Crowing
If you have a traditional water heater you should have at least 40 gallons there even though it will initially be rusty it can be filtered. If more rain is expected you can rig up a tarp or large trash bag to capture it in buckets. Also save snow. You should capture as much as possible since you have no idea how long it will take for things to get back to normal. Some of our worst storms up here have left some rural areas without power for 3 or more weeks.