Huntington, IN rainwater: 32,293 gallons off a roof
How much rain a roof in Huntington, IN collects
32,293gallons a year
That is a 1,500 sq ft asphalt roof under Huntington, IN's normal 40.6 inches of rain, about 795 gallons for every inch that falls.
In Huntington, 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 Huntington 0.3 W station (0.3 mi away). Huntington, IN ranks 66th wettest of the 88 cities covered in Indiana.
Month by month in Huntington
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.57 | 2,043 | |
| Feb | 2.18 | 1,733 | |
| Mar | 2.78 | 2,210 | |
| Apr | 3.88 | 3,084 | 59 |
| May | 4.46 | 3,545 | |
| Jun | 4.43 | 3,521 | |
| Jul | 4.04 | 3,211 | 39 |
| Aug | 4.47 | 3,553 | |
| Sep | 3.25 | 2,583 | 137 |
| Oct | 3.10 | 2,464 | 156 |
| Nov | 3.11 | 2,472 | |
| Dec | 2.36 | 1,876 |
Aug is the wettest month (4.47 in, 3,553 gal off the roof); Feb the driest (2.18 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
Which tank size is worth it in Huntington
Best fit: one 55-gallon barrel, which delivers about 305 gallons to the garden in a normal year (78.2% 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 Huntington's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 305 | 30,803 |
| 110 gal | 305 | 30,803 |
| 165 gal | 305 | 30,803 |
| 275 gal | 305 | 30,803 |
| 550 gal | 305 | 30,803 |
| 1,000 gal | 305 | 30,803 |
| 1,500 gal | 305 | 30,803 |
| 2,500 gal | 305 | 30,803 |
| 5,000 gal | 305 | 30,803 |
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