Dunklin County, MO Roof Snow Load - 10 psf
Dunklin County, MO: your roof's ASCE 7 snow number, in plain English
Dunklin County's roofs are built to hold 10 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 10 psf - higher than the 7 psf the ground-load formula alone would give, and the code says use the larger one.
In depth, not weight: that's roughly 22 inches of fresh, light snow, 8 inches of old, settled snow, or as little as 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 modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.
Snow on Dunklin County's roofs right now?
Dunklin County at a glance
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,862 of 2,758
- Missouri rank#114 of 115
- Population27,002
- Annual snowfall, NOAA normal3.5 in.
- FIPS29069
Dunklin County by the numbers
Nationally that's #1,862 out of 2,758 rated counties, the top 68%; within Missouri alone, Dunklin County ranks #114 of 115. Missouri counties average 18.6 psf; Dunklin County runs 8.6 psf lower than that.
Dunklin County, FIPS 29069, is home to 27,002 people near 36.153°N 90.0623°W. Its 10 psf ground snow load figure is the map value; 10 psf is what a roof is actually designed for.
Dunklin County's snowfall, most winters
3.5 in. a year: that's Dunklin County's NOAA 1991-2020 snowfall normal, measured at HORNERSVILLE, MO US (8.9 mi away). See the density guide.
Before you rely on Dunklin County's number
Treat the Dunklin 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.