Seneca County, NY Roof Snow Load - 28 psf
What ASCE 7 says about snow load in Seneca County
That's Seneca County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from.
Converted to something you can actually eyeball on a roof: about 61.6 in. of fresh powder, 22.4 in. once it settles and packs down, or just 5.6 in. if it's turned to ice. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Seneca County at a glance
- Design roof snow load28 psf
- Ground snow load, ASCE 7 map40 psf
- National rank#242 of 2,758
- New York rank#13 of 28
- Population32,650
- Annual snowfall, NOAA normal56.2 in.
- FIPS36099
Where Seneca County's figure sits nationally
Out of 2,758 rated US counties, Seneca County sits at #242, the top 9% nationally - #13 of 28 within New York. New York counties average 25.4 psf; Seneca County runs 2.6 psf higher than that.
Near 42.7823°N 76.8271°W, FIPS 36099: Seneca County counts 32,650 residents and a 40 psf map value, which the code's own factors turn into 28 psf.
How much it actually snows in Seneca County
Most winters bring Seneca County roughly 56.2 in. of snow - NOAA's normal at AURORA RSCH FARM, NY US, 9.1 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Seneca County's number above is ASCE 7-22's default case, not a custom calculation: ordinary residential occupancy, heated, sited on ground that's neither fully sheltered nor fully exposed. Any one of those changing - pitch, exposure, heating, occupancy - moves the real figure.
Nothing here substitutes for an address-level number. Get one free, in about a minute, from the ASCE 7 Hazard Tool using your own coordinates rather than Seneca County's county-wide figure. Details: the calculation guide.