Ormond Beach, FL rainwater: 42,498 gallons off a roof
Rainwater from a roof in Ormond Beach, FL
42,498gallons a year
That is a 1,500 sq ft asphalt roof under Ormond Beach, FL's normal 53.5 inches of rain, about 795 gallons for every inch that falls.
In Ormond Beach, 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 Ormond-By-The-Sea 0.8 Sse station (3.5 mi away). Ormond Beach, FL ranks 122nd wettest of the 173 cities covered in Florida.
Month by month in Ormond Beach
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.92 | 2,321 | |
| Feb | 2.66 | 2,114 | |
| Mar | 3.33 | 2,647 | |
| Apr | 2.80 | 2,225 | 193 |
| May | 3.76 | 2,988 | 74 |
| Jun | 7.15 | 5,683 | |
| Jul | 6.17 | 4,904 | |
| Aug | 6.84 | 5,436 | |
| Sep | 6.87 | 5,460 | |
| Oct | 5.09 | 4,046 | |
| Nov | 3.22 | 2,559 | |
| Dec | 2.66 | 2,114 |
Jun is the wettest month (7.15 in, 5,683 gal off the roof); Feb the driest (2.66 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
What size rain barrel for Ormond Beach
Best fit: one 55-gallon barrel, which delivers about 220 gallons to the garden in a normal year (82.5% 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 Ormond Beach's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 220 | 41,138 |
| 110 gal | 220 | 41,138 |
| 165 gal | 220 | 41,138 |
| 275 gal | 220 | 41,138 |
| 550 gal | 220 | 41,138 |
| 1,000 gal | 220 | 41,138 |
| 1,500 gal | 220 | 41,138 |
| 2,500 gal | 220 | 41,138 |
| 5,000 gal | 220 | 41,138 |
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