Prowers County, CO Roof Snow Load - 10 psf
What ASCE 7 says about snow load in Prowers County
That's Prowers County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 10 psf - higher than the 7 psf the ground-load formula alone would give, and the code says use the larger one.
Converted to something you can actually eyeball on a roof: about 22 in. of fresh powder, 8 in. once it settles and packs down, or just 2 in. if it's turned to ice. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.
Prowers County in numbers
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,982 of 2,758
- Colorado rank#20 of 24
- Population11,957
- Annual snowfall, NOAA normal21.5 in.
- FIPS08099
Where Prowers County's figure sits nationally
Out of 2,758 rated US counties, Prowers County sits at #1,982, the top 72% nationally - #20 of 24 within Colorado. That's 7.7 psf below Colorado's own county-average design load of 17.7 psf.
Near 37.9584°N 102.3918°W, FIPS 08099: Prowers County counts 11,957 residents and a 10 psf map value, which the code's own factors turn into 10 psf.
How much it actually snows in Prowers County
Most winters bring Prowers County roughly 21.5 in. of snow - NOAA's normal at HOLLY, CO US, 15.6 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Prowers 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 Prowers County's county-wide figure. See the methodology guide.