Newark, OH rainwater: 34,495 gallons off a roof
How much rain a roof in Newark, OH collects
34,495gallons a year
That is a 1,500 sq ft asphalt roof under Newark, OH's normal 43.4 inches of rain, about 795 gallons for every inch that falls.
In Newark, 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 Newark Wtr Wks station (1.3 mi away). Newark, OH ranks 46th wettest of the 176 cities covered in Ohio.
Month by month in Newark
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.21 | 2,551 | |
| Feb | 2.56 | 2,035 | |
| Mar | 3.61 | 2,869 | |
| Apr | 4.01 | 3,187 | 42 |
| May | 4.24 | 3,370 | 14 |
| Jun | 4.69 | 3,728 | |
| Jul | 4.56 | 3,624 | |
| Aug | 3.89 | 3,092 | 57 |
| Sep | 3.24 | 2,575 | 138 |
| Oct | 3.11 | 2,472 | 155 |
| Nov | 2.99 | 2,376 | |
| Dec | 3.29 | 2,615 |
Jun is the wettest month (4.69 in, 3,728 gal off the roof); Feb the driest (2.56 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 Newark?
Best fit: one 55-gallon barrel, which delivers about 321 gallons to the garden in a normal year (79.0% of its need).
Before you buy, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Newark's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 321 | 32,884 |
| 110 gal | 321 | 32,884 |
| 165 gal | 321 | 32,884 |
| 275 gal | 321 | 32,884 |
| 550 gal | 321 | 32,884 |
| 1,000 gal | 321 | 32,884 |
| 1,500 gal | 321 | 32,884 |
| 2,500 gal | 321 | 32,884 |
| 5,000 gal | 321 | 32,884 |
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