Miami Springs, FL rainwater: 57,965 gallons off a roof
How much rain a roof in Miami Springs, FL collects
57,965gallons a year
That is a 1,500 sq ft asphalt roof under Miami Springs, FL's normal 72.9 inches of rain, about 795 gallons for every inch that falls.
In Miami Springs, 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 Hialeah station (0.3 mi away). Miami Springs, FL ranks 2nd wettest of the 173 cities covered in Florida.
Month by month in Miami Springs
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.03 | 1,613 | |
| Feb | 2.29 | 1,820 | |
| Mar | 2.81 | 2,233 | |
| Apr | 3.81 | 3,028 | 67 |
| May | 6.08 | 4,832 | |
| Jun | 11.45 | 9,101 | |
| Jul | 7.92 | 6,295 | |
| Aug | 9.98 | 7,932 | |
| Sep | 11.53 | 9,164 | |
| Oct | 8.23 | 6,541 | |
| Nov | 4.00 | 3,179 | |
| Dec | 2.80 | 2,225 |
Sep is the wettest month (11.53 in, 9,164 gal off the roof); Jan the driest (2.03 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 Miami Springs
Best fit: one 55-gallon barrel, which delivers about 56 gallons to the garden in a normal year (83.2% of its need).
If you buy one, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Miami Springs's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 56 | 56,439 |
| 110 gal | 56 | 56,439 |
| 165 gal | 56 | 56,439 |
| 275 gal | 56 | 56,439 |
| 550 gal | 56 | 56,439 |
| 1,000 gal | 56 | 56,439 |
| 1,500 gal | 56 | 56,439 |
| 2,500 gal | 56 | 56,439 |
| 5,000 gal | 56 | 56,439 |
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