Opa-locka, FL rainwater: 49,795 gallons off a roof
Rainwater from a roof in Opa-locka, FL
49,795gallons a year
That is a 1,500 sq ft asphalt roof under Opa-locka, FL's normal 62.7 inches of rain, about 795 gallons for every inch that falls.
In Opa-locka, 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 Miami Opa Locka Ap station (1.6 mi away). Opa-locka, FL ranks 54th wettest of the 173 cities covered in Florida.
Month by month in Opa-locka
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 1.81 | 1,439 | |
| Feb | 2.66 | 2,114 | |
| Mar | 2.51 | 1,995 | |
| Apr | 2.94 | 2,337 | 176 |
| May | 6.05 | 4,809 | |
| Jun | 8.92 | 7,090 | |
| Jul | 8.13 | 6,462 | |
| Aug | 8.08 | 6,422 | |
| Sep | 8.71 | 6,923 | |
| Oct | 7.78 | 6,184 | |
| Nov | 2.89 | 2,297 | |
| Dec | 2.17 | 1,725 |
Jun is the wettest month (8.92 in, 7,090 gal off the roof); Jan the driest (1.81 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
Barrel or cistern in Opa-locka?
Best fit: one 55-gallon barrel, which delivers about 152 gallons to the garden in a normal year (86.5% 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 Opa-locka's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 152 | 48,397 |
| 110 gal | 152 | 48,397 |
| 165 gal | 152 | 48,397 |
| 275 gal | 152 | 48,397 |
| 550 gal | 152 | 48,397 |
| 1,000 gal | 152 | 48,397 |
| 1,500 gal | 152 | 48,397 |
| 2,500 gal | 152 | 48,397 |
| 5,000 gal | 152 | 48,397 |
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