SnowLoadCheck

Knott County, KY Roof Snow Load - 20 psf

What ASCE 7 says about snow load in Knott County

Moderate
20 psf

That's Knott County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. The physics-based figure alone would be 14 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 20 psf for flat and low-pitch roofs here, which is the number that actually governs.

Converted to something you can actually eyeball on a roof: about 44 in. of fresh powder, 16 in. once it settles and packs down, or just 4 in. if it's turned to ice. This is a meaningful design load - most modern-code homes handle it fine, though an addition, a carport or a flat-roofed section can be a weak spot.

Snow on Knott County's roofs right now?

in. of

Knott County in numbers

Where Knott County's figure sits nationally

Out of 2,758 rated US counties, Knott County sits at #1,056, the top 38% nationally - #12 of 120 within Kentucky. Kentucky counties average 15.7 psf; Knott County runs 4.3 psf higher than that.

Near 37.3544°N 82.9525°W, FIPS 21119: Knott County counts 13,438 residents and a 20 psf map value, which the code's own factors turn into 20 psf.

How much it actually snows in Knott County

Most winters bring Knott County roughly 8.8 in. of snow - NOAA's normal at HAZARD WTR WKS, KY US, 14.6 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Knott 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 Knott County's county-wide figure. See the methodology guide.