Marysville, OH rainwater: 32,174 gallons off a roof
Rainwater from a roof in Marysville, OH
32,174gallons a year
That is a 1,500 sq ft asphalt roof under Marysville, OH's normal 40.5 inches of rain, about 795 gallons for every inch that falls.
In Marysville, 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 Marysville station (4.4 mi away). Marysville, OH ranks 136th wettest of the 176 cities covered in Ohio.
Month by month in Marysville
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.68 | 2,130 | |
| Feb | 2.29 | 1,820 | |
| Mar | 3.02 | 2,400 | |
| Apr | 3.86 | 3,068 | 61 |
| May | 4.52 | 3,593 | |
| Jun | 4.85 | 3,855 | |
| Jul | 4.15 | 3,298 | 25 |
| Aug | 3.41 | 2,710 | 117 |
| Sep | 3.20 | 2,543 | 143 |
| Oct | 2.72 | 2,162 | 203 |
| Nov | 2.90 | 2,305 | |
| Dec | 2.88 | 2,289 |
Jun is the wettest month (4.85 in, 3,855 gal off the roof); Feb the driest (2.29 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 Marysville?
Best fit: one 55-gallon barrel, which delivers about 437 gallons to the garden in a normal year (79.5% 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 Marysville's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 437 | 30,507 |
| 110 gal | 437 | 30,507 |
| 165 gal | 437 | 30,507 |
| 275 gal | 437 | 30,507 |
| 550 gal | 437 | 30,507 |
| 1,000 gal | 437 | 30,507 |
| 1,500 gal | 437 | 30,507 |
| 2,500 gal | 437 | 30,507 |
| 5,000 gal | 437 | 30,507 |
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