Worthington, OH rainwater: 28,422 gallons off a roof
How much rain a roof in Worthington, OH collects
28,422gallons a year
That is a 1,500 sq ft asphalt roof under Worthington, OH's normal 35.8 inches of rain, about 795 gallons for every inch that falls.
In Worthington, 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 Columbus Ohio State Univ Ap station (3.3 mi away). Worthington, OH ranks 165th wettest of the 176 cities covered in Ohio.
Month by month in Worthington
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.22 | 1,764 | |
| Feb | 1.94 | 1,542 | |
| Mar | 2.99 | 2,376 | |
| Apr | 3.54 | 2,814 | 101 |
| May | 3.85 | 3,060 | 62 |
| Jun | 4.05 | 3,219 | 37 |
| Jul | 3.72 | 2,957 | 79 |
| Aug | 3.05 | 2,424 | 162 |
| Sep | 3.00 | 2,384 | 168 |
| Oct | 2.52 | 2,003 | 228 |
| Nov | 2.36 | 1,876 | |
| Dec | 2.52 | 2,003 |
Jun is the wettest month (4.05 in, 3,219 gal off the roof); Feb the driest (1.94 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 Worthington?
Best fit: one 55-gallon barrel, which delivers about 658 gallons to the garden in a normal year (78.5% of its need).
If you buy one, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Worthington's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 658 | 26,624 |
| 110 gal | 658 | 26,624 |
| 165 gal | 658 | 26,624 |
| 275 gal | 658 | 26,624 |
| 550 gal | 658 | 26,624 |
| 1,000 gal | 658 | 26,624 |
| 1,500 gal | 658 | 26,624 |
| 2,500 gal | 658 | 26,624 |
| 5,000 gal | 658 | 26,624 |
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