Kenmore, NY rainwater: 32,396 gallons off a roof
How much rain a roof in Kenmore, NY collects
32,396gallons a year
That is a 1,500 sq ft asphalt roof under Kenmore, NY's normal 40.8 inches of rain, about 795 gallons for every inch that falls.
In Kenmore, 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 Kenmore 0.3 Ese station (0.2 mi away). Kenmore, NY ranks 77th wettest of the 90 cities covered in New York.
Month by month in Kenmore
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.19 | 2,535 | |
| Feb | 2.43 | 1,931 | |
| Mar | 2.98 | 2,369 | |
| Apr | 3.53 | 2,806 | 102 |
| May | 3.20 | 2,543 | 143 |
| Jun | 3.71 | 2,949 | 80 |
| Jul | 3.15 | 2,504 | 150 |
| Aug | 3.77 | 2,996 | 72 |
| Sep | 3.74 | 2,973 | 76 |
| Oct | 4.18 | 3,322 | 21 |
| Nov | 3.22 | 2,559 | |
| Dec | 3.66 | 2,909 |
Oct is the wettest month (4.18 in, 3,322 gal off the roof); Feb the driest (2.43 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 Kenmore?
Best fit: one 55-gallon barrel, which delivers about 486 gallons to the garden in a normal year (75.4% of its need).
Before you buy, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Kenmore's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 486 | 30,485 |
| 110 gal | 486 | 30,485 |
| 165 gal | 486 | 30,485 |
| 275 gal | 486 | 30,485 |
| 550 gal | 486 | 30,485 |
| 1,000 gal | 486 | 30,485 |
| 1,500 gal | 486 | 30,485 |
| 2,500 gal | 486 | 30,485 |
| 5,000 gal | 486 | 30,485 |
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