Haakon County, SD Roof Snow Load - 21 psf
Haakon County, SD: your roof's ASCE 7 snow number, in plain English
Haakon County's roofs are built to hold 21 psf of snow, the ASCE 7-22 figure a permit reviewer checks first.
In depth, not weight: that's roughly 46.2 inches of fresh, light snow, 16.8 inches of old, settled snow, or as little as 4.2 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. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Haakon County, SD: quick facts
- Design roof snow load21 psf
- Ground snow load, ASCE 7 map30 psf
- National rank#485 of 2,758
- South Dakota rank#55 of 65
- Population1,834
- Annual snowfall, NOAA normal44.8 in.
- FIPS46055
Haakon County by the numbers
Nationally that's #485 out of 2,758 rated counties, the top 18%; within South Dakota alone, Haakon County ranks #55 of 65. 28.2 psf is South Dakota's typical county figure - Haakon County comes in 7.2 psf under it.
Haakon County, FIPS 46055, is home to 1,834 people near 44.2881°N 101.5409°W. Its 30 psf ground snow load figure is the map value; 21 psf is what a roof is actually designed for.
Haakon County's snowfall, most winters
44.8 in. a year: that's Haakon County's NOAA 1991-2020 snowfall normal, measured at MILESVILLE 5 NE, SD US (16.3 mi away). See the density guide.
Before you rely on Haakon County's number
Treat the Haakon 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. (How this figure is calculated.)