Glenn County, CA Roof Snow Load - 5 psf
What ASCE 7 says about snow load in Glenn County
That's Glenn County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. Flat and low-pitch roofs in Glenn County are actually governed by ASCE 7's §7.3.4 minimum of 5 psf, not the 3.5 psf the ground-load formula alone would produce.
Converted to something you can actually eyeball on a roof: about 11 in. of fresh powder, 4 in. once it settles and packs down, or just 1 in. if it's turned to ice. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.
Snow on Glenn County's roofs right now?
Glenn County in numbers
- Design roof snow load5 psf
- Ground snow load, ASCE 7 map5 psf
- National rank#2,243 of 2,758
- California rank#4 of 41
- Population28,304
- Annual snowfall, NOAA normal0 in.
- FIPS06021
Where Glenn County's figure sits nationally
Out of 2,758 rated US counties, Glenn County sits at #2,243, the top 81% nationally - #4 of 41 within California. 1.1 psf is California's typical county figure - Glenn County beats it by 3.9 psf.
Near 39.6025°N 122.4017°W, FIPS 06021: Glenn County counts 28,304 residents and a 5 psf map value, which the code's own factors turn into 5 psf.
How much it actually snows in Glenn County
Most winters bring Glenn County roughly 0 in. of snow - NOAA's normal at STONY GORGE RSVR, CA US, 7.1 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Glenn 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 Glenn County's county-wide figure. See the methodology guide.