Harney County, OR Roof Snow Load - 10 psf
What ASCE 7 says about snow load in Harney County
That's Harney County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. §7.3.4's low-slope minimum of 10 psf is what actually governs on a flat or low-pitch roof here - higher than the 7 psf the base ground-load formula gives.
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. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.
Harney County at a glance
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#2,026 of 2,758
- Oregon rank#13 of 15
- Population7,402
- Annual snowfall, NOAA normal35.9 in.
- FIPS41025
Where Harney County's figure sits nationally
Out of 2,758 rated US counties, Harney County sits at #2,026, the top 73% nationally - #13 of 15 within Oregon. 12 psf is Oregon's typical county figure - Harney County comes in 2 psf under it.
Near 43.0644°N 118.9872°W, FIPS 41025: Harney County counts 7,402 residents and a 10 psf map value, which the code's own factors turn into 10 psf.
How much it actually snows in Harney County
Most winters bring Harney County roughly 35.9 in. of snow - NOAA's normal at DREWSEY, OR US, 59.8 mi off. 59.8 mi is a real gap between Harney County and its nearest reporting station, so local snowfall can diverge from this figure, especially near elevation changes. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Harney 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 Harney County's county-wide figure. Details: the calculation guide.