Ravenna, OH rainwater: 34,232 gallons off a roof
Ravenna, OH: gallons off the roof each year
34,232gallons a year
That is a 1,500 sq ft asphalt roof under Ravenna, OH's normal 43.1 inches of rain, about 795 gallons for every inch that falls.
In Ravenna, OH 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 Ravenna 2 S station (2.9 mi away). Ravenna, OH ranks 54th wettest of the 176 cities covered in Ohio.
Month by month in Ravenna
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.07 | 2,440 | |
| Feb | 2.52 | 2,003 | |
| Mar | 3.20 | 2,543 | |
| Apr | 3.72 | 2,957 | 79 |
| May | 4.17 | 3,314 | 22 |
| Jun | 4.43 | 3,521 | |
| Jul | 4.51 | 3,585 | |
| Aug | 3.68 | 2,925 | 84 |
| Sep | 4.19 | 3,330 | 20 |
| Oct | 3.49 | 2,774 | 107 |
| Nov | 2.98 | 2,369 | |
| Dec | 3.11 | 2,472 |
Jul is the wettest month (4.51 in, 3,585 gal off the roof); Feb the driest (2.52 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 Ravenna
Best fit: one 55-gallon barrel, which delivers about 236 gallons to the garden in a normal year (75.7% 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 Ravenna's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 236 | 32,661 |
| 110 gal | 236 | 32,661 |
| 165 gal | 236 | 32,661 |
| 275 gal | 236 | 32,661 |
| 550 gal | 236 | 32,661 |
| 1,000 gal | 236 | 32,661 |
| 1,500 gal | 236 | 32,661 |
| 2,500 gal | 236 | 32,661 |
| 5,000 gal | 236 | 32,661 |
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 Ohio?
Legal. Ohio regulates rainwater cisterns used as a drinking-water source as private water systems (OAC chapter 3701-28): local health department permit, continuous disinfection and filtration. No state rule restricting non-potable collection or storage size.
Checked against the current source on 2026-11-06. Source