Schererville, IN rainwater: 31,403 gallons off a roof
Schererville, IN: gallons off the roof each year
31,403gallons a year
That is a 1,500 sq ft asphalt roof under Schererville, IN's normal 39.5 inches of rain, about 795 gallons for every inch that falls.
In Schererville, 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 St. John 0.2 Wsw station (3.3 mi away). Schererville, IN ranks 81st wettest of the 88 cities covered in Indiana.
Month by month in Schererville
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.32 | 1,844 | |
| Feb | 2.07 | 1,645 | |
| Mar | 2.28 | 1,812 | |
| Apr | 3.68 | 2,925 | 84 |
| May | 4.10 | 3,259 | 31 |
| Jun | 4.68 | 3,720 | |
| Jul | 4.25 | 3,378 | 12 |
| Aug | 4.27 | 3,394 | 10 |
| Sep | 3.36 | 2,671 | 123 |
| Oct | 3.63 | 2,885 | 90 |
| Nov | 2.74 | 2,178 | |
| Dec | 2.13 | 1,693 |
Jun is the wettest month (4.68 in, 3,720 gal off the roof); Feb the driest (2.07 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 Schererville
Best fit: one 55-gallon barrel, which delivers about 273 gallons to the garden in a normal year (77.9% 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 Schererville's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 273 | 29,975 |
| 110 gal | 273 | 29,975 |
| 165 gal | 273 | 29,975 |
| 275 gal | 273 | 29,975 |
| 550 gal | 273 | 29,975 |
| 1,000 gal | 273 | 29,975 |
| 1,500 gal | 273 | 29,975 |
| 2,500 gal | 273 | 29,975 |
| 5,000 gal | 273 | 29,975 |
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