Logan County, ND Roof Snow Load - 28 psf
Logan County, ND: your roof's ASCE 7 snow number, in plain English
Logan County's roofs are built to hold 28 psf of snow, the ASCE 7-22 figure a permit reviewer checks first.
In depth, not weight: that's roughly 61.6 inches of fresh, light snow, 22.4 inches of old, settled snow, or as little as 5.6 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. 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.
Logan County at a glance
- Design roof snow load28 psf
- Ground snow load, ASCE 7 map40 psf
- National rank#298 of 2,758
- North Dakota rank#31 of 49
- Population1,880
- Annual snowfall, NOAA normal53.2 in.
- FIPS38047
Logan County by the numbers
Nationally that's #298 out of 2,758 rated counties, the top 11%; within North Dakota alone, Logan County ranks #31 of 49. 29.4 psf is North Dakota's typical county figure - Logan County comes in 1.4 psf under it.
Logan County, FIPS 38047, is home to 1,880 people near 46.4693°N 99.5046°W. Its 40 psf ground snow load figure is the map value; 28 psf is what a roof is actually designed for.
Logan County's snowfall, most winters
53.2 in. a year: that's Logan County's NOAA 1991-2020 snowfall normal, measured at NAPOLEON, ND US (12.9 mi away). See the density guide.
Before you rely on Logan County's number
Treat the Logan County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.
For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. See the methodology guide.