SnowLoadCheck

Keokuk County, IA Roof Snow Load - 20 psf

What ASCE 7 says about snow load in Keokuk County

Moderate
20 psf

That's Keokuk County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. 14 psf is what the ground-load formula alone gives; Keokuk County's 20 psf low-slope minimum (§7.3.4) beats it, so that figure is the one that governs on flat and low-pitch roofs.

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. 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.

Keokuk County, IA: quick facts

Where Keokuk County's figure sits nationally

Out of 2,758 rated US counties, Keokuk County sits at #1,107, the top 40% nationally - #84 of 99 within Iowa. Iowa counties average 21.7 psf; Keokuk County runs 1.7 psf lower than that.

Near 41.3312°N 92.1677°W, FIPS 19107: Keokuk County counts 9,855 residents and a 20 psf map value, which the code's own factors turn into 20 psf.

How much it actually snows in Keokuk County

Most winters bring Keokuk County roughly 34.1 in. of snow - NOAA's normal at BRIGHTON, IA US, 20.9 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Keokuk 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 Keokuk County's county-wide figure. (How this figure is calculated.)