Don't get all secure with water as a defense system, water and electricity are the first things to go in rural settings. Bare mineral soil fire breaks, enough to make your wife howl in outrage, is the only thing that can be relied on.
Part of the overall plan should include a generator and fuel supply. I'm thinking buried propane tank. Looks like Generac makes some. 127 cubic feet per hour consumption under full load. Seems like a lot of fuel, How would a person convert cubic feet to say a 250 gallon propane tank?
7.5 gallons per cubic foot. 250 gallon divided by 7.5 equals 33 cubic ft. storage in the tank. 33 times .8 to account for expansion space equals 26 1/2 cu ft actual storage capacity. 26.5 times 270 expansion ratio of propane liquid to gas equals 7,155 cubic feet of propane gas. 7155 divided by 127 cu ft per hr consumption equals 56 hours run time on the generator.
People who choose to brew up their own storms bitch loudest about the rain.
