Sanborn County, SD Roof Snow Load - 28 psf
What ASCE 7 says about snow load in Sanborn County
That's Sanborn 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. Modern-code homes carry a load like this without issue; an older addition, a carport, or any flat-roofed section is where it is worth checking first.
Got real snow on a Sanborn County roof right now?
Sanborn County, SD: quick facts
- Design roof snow load28 psf
- Ground snow load, ASCE 7 map40 psf
- National rank#292 of 2,758
- South Dakota rank#40 of 65
- Population2,392
- Annual snowfall, NOAA normal26.3 in.
- FIPS46111
Where Sanborn County's figure sits nationally
Out of 2,758 rated US counties, Sanborn County sits at #292, the top 11% nationally - #40 of 65 within South Dakota. South Dakota counties average 28.2 psf; Sanborn County runs 0.2 psf lower than that.
Near 44.0189°N 98.0917°W, FIPS 46111: Sanborn County counts 2,392 residents and a 40 psf map value, which the code's own factors turn into 28 psf.
How much it actually snows in Sanborn County
Most winters bring Sanborn County roughly 26.3 in. of snow - NOAA's normal at FORESTBURG 4 NNE, SD US, 3.4 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Sanborn 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 Sanborn County's county-wide figure. See the methodology guide.