McKenzie County, ND Roof Snow Load - 21 psf
What ASCE 7 says about snow load in McKenzie County
That's McKenzie 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 46.2 in. of fresh powder, 16.8 in. once it settles and packs down, or just 4.2 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.
McKenzie County, ND: quick facts
- Design roof snow load21 psf
- Ground snow load, ASCE 7 map30 psf
- National rank#463 of 2,758
- North Dakota rank#47 of 49
- Population14,782
- Annual snowfall, NOAA normal34.8 in.
- FIPS38053
Where McKenzie County's figure sits nationally
Out of 2,758 rated US counties, McKenzie County sits at #463, the top 17% nationally - #47 of 49 within North Dakota. That's 8.4 psf below North Dakota's own county-average design load of 29.4 psf.
Near 47.7425°N 103.4032°W, FIPS 38053: McKenzie County counts 14,782 residents and a 30 psf map value, which the code's own factors turn into 21 psf.
How much it actually snows in McKenzie County
Most winters bring McKenzie County roughly 34.8 in. of snow - NOAA's normal at KEENE 3S, ND US, 24.8 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
McKenzie 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 McKenzie County's county-wide figure. (How this figure is calculated.)