Putnam County, NY Roof Snow Load - 21 psf

How much snow is too much for a roof in Putnam County, NY?

Picture it, not just weigh it: 46.2 in. if it's fresh powder, 16.8 in. once it settles, or a mere 4.2 in. if it's ice. Modern-code homes carry a load like this without issue; an older addition, a carport, or any flat-roofed section is where it is worth checking first.

Putnam County at a glance

• Design roof snow load21 psf
• Ground snow load, ASCE 7 map30 psf
• National rank#420 of 2,758
• New York rank#22 of 28
• Population98,409
• Annual snowfall, NOAA normal39.5 in.
• FIPS36079

How Putnam County compares

21 psf ranks #420 of 2,758 US counties with a mapped snow load (top 15%) - and #22 of 28 in New York. New York counties average 25.4 psf; Putnam County runs 4.4 psf lower than that.

Population 98,409 (FIPS 36079), roughly 41.4279°N 73.7439°W. The 30 psf ground snow load ASCE 7-22 maps here becomes 21 psf once the code's own design factors are applied.

Typical snowfall in Putnam County, NY

NOAA's 30-year normal for Putnam County: 39.5 in. of snow a year, from the YORKTOWN HTS 1W, NY US station. (fresh vs. packed vs. ice explains why.)

What this Putnam County figure assumes

This is a county-level reference figure for a typical heated home built to Risk Category II (ordinary residential), on a partially exposed lot - the assumptions ASCE 7-22 itself treats as the default case. A steeper roof, a fully exposed hilltop lot, an unheated structure, or a higher risk category all change the actual number.

Putnam County's permit office wants an address-specific figure, not this county average - the ASCE 7 Hazard Tool is free, takes under a minute, and outputs a PDF most reviewers accept. (How this figure is calculated.)