Worth County, IA Roof Snow Load - 28 psf
What ASCE 7 says about snow load in Worth County
That's Worth 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. 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.
Worth County at a glance
- Design roof snow load28 psf
- Ground snow load, ASCE 7 map40 psf
- National rank#272 of 2,758
- Iowa rank#8 of 99
- Population7,307
- Annual snowfall, NOAA normal38.1 in.
- FIPS19195
Where Worth County's figure sits nationally
Out of 2,758 rated US counties, Worth County sits at #272, the top 10% nationally - #8 of 99 within Iowa. 21.7 psf is Iowa's typical county figure - Worth County beats it by 6.3 psf.
Near 43.3735°N 93.2485°W, FIPS 19195: Worth County counts 7,307 residents and a 40 psf map value, which the code's own factors turn into 28 psf.
How much it actually snows in Worth County
Most winters bring Worth County roughly 38.1 in. of snow - NOAA's normal at LAKE MILLS, IA US, 14.7 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Worth 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 Worth County's county-wide figure. Details: the calculation guide.