Conneaut, OH rainwater: 38,310 gallons off a roof
Rainwater from a roof in Conneaut, OH
38,310gallons a year
That is a 1,500 sq ft asphalt roof under Conneaut, OH's normal 48.2 inches of rain, about 795 gallons for every inch that falls.
In Conneaut, 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 Springboro 3 Wnw station (10.7 mi away). Conneaut, OH ranks 1st wettest of the 176 cities covered in Ohio.
Month by month in Conneaut
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.59 | 2,853 | |
| Feb | 2.59 | 2,059 | |
| Mar | 3.37 | 2,678 | |
| Apr | 3.99 | 3,171 | 45 |
| May | 4.19 | 3,330 | 20 |
| Jun | 4.69 | 3,728 | |
| Jul | 4.44 | 3,529 | |
| Aug | 4.09 | 3,251 | 32 |
| Sep | 4.59 | 3,648 | |
| Oct | 4.75 | 3,775 | |
| Nov | 4.01 | 3,187 | |
| Dec | 3.90 | 3,100 |
Oct is the wettest month (4.75 in, 3,775 gal off the roof); Feb the driest (2.59 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 Conneaut?
Best fit: one 55-gallon barrel, which delivers about 70 gallons to the garden in a normal year (72.0% 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 Conneaut's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 70 | 36,605 |
| 110 gal | 70 | 36,605 |
| 165 gal | 70 | 36,605 |
| 275 gal | 70 | 36,605 |
| 550 gal | 70 | 36,605 |
| 1,000 gal | 70 | 36,605 |
| 1,500 gal | 70 | 36,605 |
| 2,500 gal | 70 | 36,605 |
| 5,000 gal | 70 | 36,605 |
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