Davie, FL rainwater: 54,659 gallons off a roof
How much rain a roof in Davie, FL collects
54,659gallons a year
That is a 1,500 sq ft asphalt roof under Davie, FL's normal 68.8 inches of rain, about 795 gallons for every inch that falls.
In Davie, 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 Ft Lauderdale station (5.3 mi away). Davie, FL ranks 8th wettest of the 173 cities covered in Florida.
Month by month in Davie
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.89 | 2,297 | |
| Feb | 2.76 | 2,194 | |
| Mar | 2.95 | 2,345 | |
| Apr | 3.69 | 2,933 | 82 |
| May | 6.63 | 5,270 | |
| Jun | 9.38 | 7,455 | |
| Jul | 7.64 | 6,072 | |
| Aug | 8.25 | 6,557 | |
| Sep | 9.97 | 7,924 | |
| Oct | 7.26 | 5,770 | |
| Nov | 4.66 | 3,704 | |
| Dec | 2.69 | 2,138 |
Sep is the wettest month (9.97 in, 7,924 gal off the roof); Dec the driest (2.69 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 Davie
Best fit: one 55-gallon barrel, which delivers about 69 gallons to the garden in a normal year (83.9% of its need).
If you set one up, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Davie's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 69 | 53,165 |
| 110 gal | 69 | 53,165 |
| 165 gal | 69 | 53,165 |
| 275 gal | 69 | 53,165 |
| 550 gal | 69 | 53,165 |
| 1,000 gal | 69 | 53,165 |
| 1,500 gal | 69 | 53,165 |
| 2,500 gal | 69 | 53,165 |
| 5,000 gal | 69 | 53,165 |
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