Maumee, OH rainwater: 28,629 gallons off a roof
How much rain a roof in Maumee, OH collects
28,629gallons a year
That is a 1,500 sq ft asphalt roof under Maumee, OH's normal 36.0 inches of rain, about 795 gallons for every inch that falls.
In Maumee, 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 Perrysburg 1.6 Wsw station (2.2 mi away). Maumee, OH ranks 163rd wettest of the 176 cities covered in Ohio.
Month by month in Maumee
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.27 | 1,804 | |
| Feb | 2.16 | 1,717 | |
| Mar | 2.45 | 1,947 | |
| Apr | 3.38 | 2,686 | 121 |
| May | 3.80 | 3,020 | 69 |
| Jun | 3.70 | 2,941 | 81 |
| Jul | 3.60 | 2,861 | 94 |
| Aug | 3.78 | 3,004 | 71 |
| Sep | 3.08 | 2,448 | 158 |
| Oct | 2.80 | 2,225 | 193 |
| Nov | 2.64 | 2,098 | |
| Dec | 2.36 | 1,876 |
May is the wettest month (3.80 in, 3,020 gal off the roof); Feb the driest (2.16 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 Maumee?
Best fit: one 55-gallon barrel, which delivers about 624 gallons to the garden in a normal year (79.3% 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 Maumee's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 624 | 26,880 |
| 110 gal | 624 | 26,880 |
| 165 gal | 624 | 26,880 |
| 275 gal | 624 | 26,880 |
| 550 gal | 624 | 26,880 |
| 1,000 gal | 624 | 26,880 |
| 1,500 gal | 624 | 26,880 |
| 2,500 gal | 624 | 26,880 |
| 5,000 gal | 624 | 26,880 |
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