I don't think that "short supply" is caused by us comsuming it in an earthquake. "Shortage" will not be a problem, but "broken gas lines and downed power lines" will be. So I think you are safe to use the resources you CAN use.
A genny might be a good idea anyway (you can use it for camping too, I suppose).
And if I remember correctly from Boy Scouts, you should always "Be Prepared"!
Specifically, we're just trying to brainstorm on what we can do to prepare our tanks for an earthquake, other than just giving up.
- Keep a big tub around to put livestock if your tank breaks, even if you have no power, having your livestock in water will certainly help!
- Battery operated air pumps will help greatly, and cost only about $10
- Heat? Well, not much you can do about it, other than run a heater on a genny.
- Water? Well, you'll probably need all you can for yourself, but maybe keep some on hand anyway for the tank.
(NOTE: RO "Waste" water is probably excellent emergency water, if you store some of it!)
- Strap your stand/tank. Might not help in "the big one" but it'll help in the smaller ones, and doing something is better than not doing something!
Just remember what happened when the North East lost power for a week (two, three years ago?). We should learn from them!
V