New Smyrna Beach, FL rainwater: 40,185 gallons off a roof
New Smyrna Beach, FL: gallons off the roof each year
40,185gallons a year
That is a 1,500 sq ft asphalt roof under New Smyrna Beach, FL's normal 50.6 inches of rain, about 795 gallons for every inch that falls.
In New Smyrna 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 New Smyrna Bch - Marine Discov station (2.3 mi away). New Smyrna Beach, FL ranks 161st wettest of the 173 cities covered in Florida.
Month by month in New Smyrna Beach
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.76 | 2,194 | |
| Feb | 2.47 | 1,963 | |
| Mar | 3.00 | 2,384 | |
| Apr | 2.62 | 2,082 | 216 |
| May | 3.72 | 2,957 | 79 |
| Jun | 7.45 | 5,921 | |
| Jul | 6.06 | 4,817 | |
| Aug | 6.47 | 5,142 | |
| Sep | 6.88 | 5,468 | |
| Oct | 4.49 | 3,569 | |
| Nov | 2.32 | 1,844 | |
| Dec | 2.32 | 1,844 |
Jun is the wettest month (7.45 in, 5,921 gal off the roof); Nov the driest (2.32 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 New Smyrna Beach
Best fit: one 55-gallon barrel, which delivers about 253 gallons to the garden in a normal year (86.0% 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 New Smyrna Beach's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 253 | 38,748 |
| 110 gal | 253 | 38,748 |
| 165 gal | 253 | 38,748 |
| 275 gal | 253 | 38,748 |
| 550 gal | 253 | 38,748 |
| 1,000 gal | 253 | 38,748 |
| 1,500 gal | 253 | 38,748 |
| 2,500 gal | 253 | 38,748 |
| 5,000 gal | 253 | 38,748 |
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