[Tijeras_Slim]

I’m in New Mexico... this year we’ve had less than 3” of rain.

[driftdiver]

I live in Tampa, we had 3” of rain this afternoon.

[onceone]

Okay. I get about 10 times more rain than you do. Keep in mind that 100 sq ft of area, 1 inch deep produces about 63 gallons of water. At least that is what the internet told me. :-)

A 550 gallon food grade, poly tank is about $350. Pretty much lasts forever. Do a search on rain collection systems on youtube. There are a lot of people with a lot of different ideas you can learn from.

500 sq feet of roof, and 2 inches of rain, will easily give you 550 gallons of water you do not have now.