Beech Grove, IN rainwater: 35,432 gallons off a roof
Rainwater from a roof in Beech Grove, IN
35,432gallons a year
That is a 1,500 sq ft asphalt roof under Beech Grove, IN's normal 44.6 inches of rain, about 795 gallons for every inch that falls.
In Beech Grove, 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 Indianapolis Se Side station (1.0 mi away). Beech Grove, IN ranks 30th wettest of the 88 cities covered in Indiana.
Month by month in Beech Grove
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.08 | 2,448 | |
| Feb | 2.34 | 1,860 | |
| Mar | 3.71 | 2,949 | |
| Apr | 4.46 | 3,545 | |
| May | 4.99 | 3,966 | |
| Jun | 5.42 | 4,308 | |
| Jul | 3.87 | 3,076 | 60 |
| Aug | 3.56 | 2,830 | 98 |
| Sep | 3.21 | 2,551 | 142 |
| Oct | 3.23 | 2,567 | 140 |
| Nov | 3.44 | 2,734 | |
| Dec | 3.27 | 2,599 |
Jun is the wettest month (5.42 in, 4,308 gal off the roof); Feb the driest (2.34 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
What size rain barrel for Beech Grove
Best fit: one 55-gallon barrel, which delivers about 362 gallons to the garden in a normal year (82.3% 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 Beech Grove's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 362 | 33,885 |
| 110 gal | 362 | 33,885 |
| 165 gal | 362 | 33,885 |
| 275 gal | 362 | 33,885 |
| 550 gal | 362 | 33,885 |
| 1,000 gal | 362 | 33,885 |
| 1,500 gal | 362 | 33,885 |
| 2,500 gal | 362 | 33,885 |
| 5,000 gal | 362 | 33,885 |
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