Poughkeepsie, NY rainwater: 37,499 gallons off a roof
How much rain a roof in Poughkeepsie, NY collects
37,499gallons a year
That is a 1,500 sq ft asphalt roof under Poughkeepsie, NY's normal 47.2 inches of rain, about 795 gallons for every inch that falls.
In Poughkeepsie, NY 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 Poughkeepsie station (2.2 mi away). Poughkeepsie, NY ranks 44th wettest of the 90 cities covered in New York.
Month by month in Poughkeepsie
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.48 | 2,766 | |
| Feb | 2.81 | 2,233 | |
| Mar | 3.54 | 2,814 | |
| Apr | 3.89 | 3,092 | 57 |
| May | 3.50 | 2,782 | 106 |
| Jun | 4.57 | 3,632 | |
| Jul | 4.50 | 3,577 | |
| Aug | 4.31 | 3,426 | 5 |
| Sep | 4.64 | 3,688 | |
| Oct | 4.64 | 3,688 | |
| Nov | 3.46 | 2,750 | |
| Dec | 3.84 | 3,052 |
Sep is the wettest month (4.64 in, 3,688 gal off the roof); Feb the driest (2.81 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 Poughkeepsie?
Best fit: one 55-gallon barrel, which delivers about 123 gallons to the garden in a normal year (73.1% 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 Poughkeepsie's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 123 | 36,101 |
| 110 gal | 123 | 36,101 |
| 165 gal | 123 | 36,101 |
| 275 gal | 123 | 36,101 |
| 550 gal | 123 | 36,101 |
| 1,000 gal | 123 | 36,101 |
| 1,500 gal | 123 | 36,101 |
| 2,500 gal | 123 | 36,101 |
| 5,000 gal | 123 | 36,101 |
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 New York?
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