Lantana, FL rainwater: 50,470 gallons off a roof
Rainwater from a roof in Lantana, FL
50,470gallons a year
That is a 1,500 sq ft asphalt roof under Lantana, FL's normal 63.5 inches of rain, about 795 gallons for every inch that falls.
In Lantana, 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 Lantana 0.3 E station (0.3 mi away). Lantana, FL ranks 46th wettest of the 173 cities covered in Florida.
Month by month in Lantana
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.16 | 2,512 | |
| Feb | 3.04 | 2,416 | |
| Mar | 3.34 | 2,655 | |
| Apr | 3.66 | 2,909 | 86 |
| May | 5.83 | 4,634 | |
| Jun | 9.14 | 7,265 | |
| Jul | 5.42 | 4,308 | |
| Aug | 8.44 | 6,708 | |
| Sep | 8.17 | 6,494 | |
| Oct | 6.64 | 5,278 | |
| Nov | 3.82 | 3,036 | |
| Dec | 2.84 | 2,257 |
Jun is the wettest month (9.14 in, 7,265 gal off the roof); Dec the driest (2.84 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 Lantana?
Best fit: one 55-gallon barrel, which delivers about 72 gallons to the garden in a normal year (83.7% 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 Lantana's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 72 | 48,973 |
| 110 gal | 72 | 48,973 |
| 165 gal | 72 | 48,973 |
| 275 gal | 72 | 48,973 |
| 550 gal | 72 | 48,973 |
| 1,000 gal | 72 | 48,973 |
| 1,500 gal | 72 | 48,973 |
| 2,500 gal | 72 | 48,973 |
| 5,000 gal | 72 | 48,973 |
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