Titusville, FL rainwater: 43,873 gallons off a roof
Rainwater from a roof in Titusville, FL
43,873gallons a year
That is a 1,500 sq ft asphalt roof under Titusville, FL's normal 55.2 inches of rain, about 795 gallons for every inch that falls.
In Titusville, 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 Titusville station (3.5 mi away). Titusville, FL ranks 101st wettest of the 173 cities covered in Florida.
Month by month in Titusville
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.05 | 2,424 | |
| Feb | 2.56 | 2,035 | |
| Mar | 3.37 | 2,678 | |
| Apr | 2.69 | 2,138 | 207 |
| May | 3.71 | 2,949 | 80 |
| Jun | 7.87 | 6,255 | |
| Jul | 6.77 | 5,381 | |
| Aug | 7.80 | 6,199 | |
| Sep | 7.46 | 5,929 | |
| Oct | 5.06 | 4,022 | |
| Nov | 2.51 | 1,995 | |
| Dec | 2.35 | 1,868 |
Jun is the wettest month (7.87 in, 6,255 gal off the roof); Dec the driest (2.35 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 Titusville?
Best fit: one 55-gallon barrel, which delivers about 244 gallons to the garden in a normal year (85.1% 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 Titusville's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 244 | 42,385 |
| 110 gal | 244 | 42,385 |
| 165 gal | 244 | 42,385 |
| 275 gal | 244 | 42,385 |
| 550 gal | 244 | 42,385 |
| 1,000 gal | 244 | 42,385 |
| 1,500 gal | 244 | 42,385 |
| 2,500 gal | 244 | 42,385 |
| 5,000 gal | 244 | 42,385 |
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