Crestview, FL rainwater: 54,142 gallons off a roof
Crestview, FL: gallons off the roof each year
54,142gallons a year
That is a 1,500 sq ft asphalt roof under Crestview, FL's normal 68.1 inches of rain, about 795 gallons for every inch that falls.
In Crestview, FL a single barrel does most of the work. Storms come often enough that a small tank refills before it runs dry, and a bigger one would mostly sit full.
Rainfall: NOAA 1991-2020 climate normals, the Crestview 1.9 Se station (1.9 mi away). Crestview, FL ranks 12th wettest of the 173 cities covered in Florida.
Month by month in Crestview
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 5.92 | 4,705 | |
| Feb | 4.86 | 3,863 | |
| Mar | 5.29 | 4,205 | |
| Apr | 5.83 | 4,634 | |
| May | 4.16 | 3,306 | 24 |
| Jun | 6.84 | 5,436 | |
| Jul | 7.60 | 6,041 | |
| Aug | 7.05 | 5,603 | |
| Sep | 6.40 | 5,087 | |
| Oct | 4.22 | 3,354 | 16 |
| Nov | 4.50 | 3,577 | |
| Dec | 5.45 | 4,332 |
Jul is the wettest month (7.60 in, 6,041 gal off the roof); May the driest (4.16 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
Which tank size is worth it in Crestview
Best fit: one 55-gallon barrel, which delivers about 34 gallons to the garden in a normal year (85.2% of its need).
Before you buy, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Crestview's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 34 | 52,938 |
| 110 gal | 34 | 52,938 |
| 165 gal | 34 | 52,938 |
| 275 gal | 34 | 52,938 |
| 550 gal | 34 | 52,938 |
| 1,000 gal | 34 | 52,938 |
| 1,500 gal | 34 | 52,938 |
| 2,500 gal | 34 | 52,938 |
| 5,000 gal | 34 | 52,938 |
Simulated storm by storm through a normal year using the station's count of days with 0.1 in or more of rain each month.
Is rainwater collection legal in Florida?
Legal. Florida approves onsite non-potable use of rainwater for landscape irrigation, vehicle washing, filling pools and fountains and, in some local jurisdictions, toilet/urinal flushing (Florida Plumbing Code). No state storage cap or registration for non-potable collection.
Checked against the current source on 2026-11-06. Source