RoofRainYield

Fairview Park, OH rainwater: 32,611 gallons off a roof

Rainwater from a roof in Fairview Park, OH

32,611gallons a year

That is a 1,500 sq ft asphalt roof under Fairview Park, OH's normal 41.0 inches of rain, about 795 gallons for every inch that falls.

In Fairview Park, 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 Cleveland station (2.0 mi away). Fairview Park, OH ranks 125th wettest of the 176 cities covered in Ohio.

Month by month in Fairview Park

MonthRain (in)Off the roof (gal)Garden shortfall (gal)
Jan2.992,376
Feb2.491,979
Mar3.062,432
Apr3.752,98175
May3.793,01270
Jun3.833,04465
Jul3.672,91785
Aug3.562,83098
Sep3.933,12452
Oct3.602,86194
Nov3.372,678
Dec2.992,376

Sep is the wettest month (3.93 in, 3,124 gal off the roof); Feb the driest (2.49 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 Fairview Park?

Best fit: one 55-gallon barrel, which delivers about 411 gallons to the garden in a normal year (76.3% 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 Fairview Park's roof water will pass straight through it.

TankWater used (gal/yr)Spills over (gal/yr)
55 gal41130,850
110 gal41130,850
165 gal41130,850
275 gal41130,850
550 gal41130,850
1,000 gal41130,850
1,500 gal41130,850
2,500 gal41130,850
5,000 gal41130,850

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