Rockledge, FL rainwater: 44,748 gallons off a roof
Rainwater from a roof in Rockledge, FL
44,748gallons a year
That is a 1,500 sq ft asphalt roof under Rockledge, FL's normal 56.3 inches of rain, about 795 gallons for every inch that falls.
In Rockledge, 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 Rockledge 1.1 Wsw station (0.8 mi away). Rockledge, FL ranks 80th wettest of the 173 cities covered in Florida.
Month by month in Rockledge
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.47 | 1,963 | |
| Feb | 2.55 | 2,027 | |
| Mar | 3.60 | 2,861 | |
| Apr | 2.73 | 2,170 | 202 |
| May | 3.41 | 2,710 | 117 |
| Jun | 7.82 | 6,215 | |
| Jul | 6.67 | 5,301 | |
| Aug | 7.65 | 6,080 | |
| Sep | 9.35 | 7,431 | |
| Oct | 5.13 | 4,077 | |
| Nov | 2.27 | 1,804 | |
| Dec | 2.65 | 2,106 |
Sep is the wettest month (9.35 in, 7,431 gal off the roof); Nov the driest (2.27 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 Rockledge
Best fit: one 55-gallon barrel, which delivers about 270 gallons to the garden in a normal year (84.6% 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 Rockledge's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 270 | 43,308 |
| 110 gal | 270 | 43,308 |
| 165 gal | 270 | 43,308 |
| 275 gal | 270 | 43,308 |
| 550 gal | 270 | 43,308 |
| 1,000 gal | 270 | 43,308 |
| 1,500 gal | 270 | 43,308 |
| 2,500 gal | 270 | 43,308 |
| 5,000 gal | 270 | 43,308 |
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