New Albany, IN rainwater: 38,143 gallons off a roof
Rainwater from a roof in New Albany, IN
38,143gallons a year
That is a 1,500 sq ft asphalt roof under New Albany, IN's normal 48.0 inches of rain, about 795 gallons for every inch that falls.
In New Albany, 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 Louisville Mcalpine station (3.0 mi away). New Albany, IN ranks 9th wettest of the 88 cities covered in Indiana.
Month by month in New Albany
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.48 | 2,766 | |
| Feb | 3.49 | 2,774 | |
| Mar | 4.54 | 3,608 | |
| Apr | 4.79 | 3,807 | |
| May | 4.81 | 3,823 | |
| Jun | 4.43 | 3,521 | |
| Jul | 3.53 | 2,806 | 102 |
| Aug | 3.27 | 2,599 | 135 |
| Sep | 3.93 | 3,124 | 52 |
| Oct | 3.49 | 2,774 | 107 |
| Nov | 3.75 | 2,981 | |
| Dec | 4.48 | 3,561 |
May is the wettest month (4.81 in, 3,823 gal off the roof); Aug the driest (3.27 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 New Albany?
Best fit: one 55-gallon barrel, which delivers about 325 gallons to the garden in a normal year (82.0% 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 New Albany's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 325 | 36,633 |
| 110 gal | 325 | 36,633 |
| 165 gal | 325 | 36,633 |
| 275 gal | 325 | 36,633 |
| 550 gal | 325 | 36,633 |
| 1,000 gal | 325 | 36,633 |
| 1,500 gal | 325 | 36,633 |
| 2,500 gal | 325 | 36,633 |
| 5,000 gal | 325 | 36,633 |
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