Canandaigua, NY rainwater: 27,969 gallons off a roof
Canandaigua, NY: gallons off the roof each year
27,969gallons a year
That is a 1,500 sq ft asphalt roof under Canandaigua, NY's normal 35.2 inches of rain, about 795 gallons for every inch that falls.
In Canandaigua, 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 Canandaigua 3 S station (3.0 mi away). Canandaigua, NY ranks 87th wettest of the 90 cities covered in New York.
Month by month in Canandaigua
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 1.92 | 1,526 | |
| Feb | 1.77 | 1,407 | |
| Mar | 2.65 | 2,106 | |
| Apr | 3.21 | 2,551 | 142 |
| May | 3.13 | 2,488 | 152 |
| Jun | 3.58 | 2,845 | 96 |
| Jul | 4.06 | 3,227 | 36 |
| Aug | 3.31 | 2,631 | 130 |
| Sep | 3.12 | 2,480 | 153 |
| Oct | 3.46 | 2,750 | 111 |
| Nov | 2.59 | 2,059 | |
| Dec | 2.39 | 1,900 |
Jul is the wettest month (4.06 in, 3,227 gal off the roof); Feb the driest (1.77 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
What size rain barrel for Canandaigua
Best fit: one 55-gallon barrel, which delivers about 619 gallons to the garden in a normal year (75.5% 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 Canandaigua's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 619 | 26,120 |
| 110 gal | 619 | 26,120 |
| 165 gal | 619 | 26,120 |
| 275 gal | 619 | 26,120 |
| 550 gal | 619 | 26,120 |
| 1,000 gal | 619 | 26,120 |
| 1,500 gal | 619 | 26,120 |
| 2,500 gal | 619 | 26,120 |
| 5,000 gal | 619 | 26,120 |
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