DeBary, FL rainwater: 41,147 gallons off a roof
Rainwater from a roof in DeBary, FL
41,147gallons a year
That is a 1,500 sq ft asphalt roof under DeBary, FL's normal 51.8 inches of rain, about 795 gallons for every inch that falls.
In DeBary, 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 De Bary 1.7 Ne station (2.3 mi away). DeBary, FL ranks 146th wettest of the 173 cities covered in Florida.
Month by month in DeBary
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.56 | 2,035 | |
| Feb | 2.37 | 1,884 | |
| Mar | 3.33 | 2,647 | |
| Apr | 2.84 | 2,257 | 188 |
| May | 3.06 | 2,432 | 161 |
| Jun | 7.24 | 5,754 | |
| Jul | 7.97 | 6,335 | |
| Aug | 7.21 | 5,731 | |
| Sep | 7.21 | 5,731 | |
| Oct | 3.43 | 2,726 | 115 |
| Nov | 2.03 | 1,613 | |
| Dec | 2.52 | 2,003 |
Jul is the wettest month (7.97 in, 6,335 gal off the roof); Nov 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.
Barrel or cistern in DeBary?
Best fit: one 55-gallon barrel, which delivers about 385 gallons to the garden in a normal year (83.0% 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 DeBary's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 385 | 39,532 |
| 110 gal | 385 | 39,532 |
| 165 gal | 385 | 39,532 |
| 275 gal | 385 | 39,532 |
| 550 gal | 385 | 39,532 |
| 1,000 gal | 385 | 39,532 |
| 1,500 gal | 385 | 39,532 |
| 2,500 gal | 385 | 39,532 |
| 5,000 gal | 385 | 39,532 |
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