Lebanon, IN rainwater: 34,407 gallons off a roof
How much rain a roof in Lebanon, IN collects
34,407gallons a year
That is a 1,500 sq ft asphalt roof under Lebanon, IN's normal 43.3 inches of rain, about 795 gallons for every inch that falls.
In Lebanon, IN 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 Lebanon 3.9 Wsw station (4.4 mi away). Lebanon, IN ranks 38th wettest of the 88 cities covered in Indiana.
Month by month in Lebanon
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.97 | 2,361 | |
| Feb | 2.42 | 1,923 | |
| Mar | 3.17 | 2,520 | |
| Apr | 4.21 | 3,346 | 17 |
| May | 4.56 | 3,624 | |
| Jun | 5.03 | 3,998 | |
| Jul | 4.55 | 3,616 | |
| Aug | 3.56 | 2,830 | 98 |
| Sep | 3.20 | 2,543 | 143 |
| Oct | 3.19 | 2,535 | 145 |
| Nov | 3.44 | 2,734 | |
| Dec | 2.99 | 2,376 |
Jun is the wettest month (5.03 in, 3,998 gal off the roof); Feb the driest (2.42 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 Lebanon?
Best fit: one 55-gallon barrel, which delivers about 328 gallons to the garden in a normal year (81.2% 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 Lebanon's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 328 | 32,939 |
| 110 gal | 328 | 32,939 |
| 165 gal | 328 | 32,939 |
| 275 gal | 328 | 32,939 |
| 550 gal | 328 | 32,939 |
| 1,000 gal | 328 | 32,939 |
| 1,500 gal | 328 | 32,939 |
| 2,500 gal | 328 | 32,939 |
| 5,000 gal | 328 | 32,939 |
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 Indiana?
No statewide rainwater harvesting regulations; check county for local incentives
From the 2015 (Pacific Northwest National Laboratory report 24347); not yet re-checked against current law, so check with your state water agency before building anything large. Source