Thinking of a different angle, but can you donate/trade/sell the water off to a local farmer or ?? Pump the water into a big tank and they could come get it.
Unique idea. However, the DFW metroplex is roughly the size of New Hampshire and I live smack dab in the middle of it. It takes an hour or more to drive to farm/ranch land and I don't have room for water storage.
We'd be really hootched if a tank that big sprang a leak.
After a 45 minute storm my pump ran for a solid 5 hours. That's not counting the cycle times before it was overrun and after it caught up. That 5 hours equates to over 13,000 gallons of water.