Cheyenne County, CO Roof Snow Load - 10 psf
Cheyenne County, CO: your roof's ASCE 7 snow number, in plain English
Cheyenne County's roofs are built to hold 10 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. The physics-based figure alone would be 7 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 10 psf for flat and low-pitch roofs here, which is the number that actually governs.
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. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.
Cheyenne County, CO: quick facts
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#2,061 of 2,758
- Colorado rank#23 of 24
- Population1,712
- Annual snowfall, NOAA normal18.3 in.
- FIPS08017
Cheyenne County by the numbers
Nationally that's #2,061 out of 2,758 rated counties, the top 75%; within Colorado alone, Cheyenne County ranks #23 of 24. That's 7.7 psf below Colorado's own county-average design load of 17.7 psf.
Cheyenne County, FIPS 08017, is home to 1,712 people near 38.8356°N 102.6018°W. Its 10 psf ground snow load figure is the map value; 10 psf is what a roof is actually designed for.
Cheyenne County's snowfall, most winters
18.3 in. a year: that's Cheyenne County's NOAA 1991-2020 snowfall normal, measured at KIT CARSON 9NNE, CO US (7.4 mi away). See the density guide.
Before you rely on Cheyenne County's number
Treat the Cheyenne 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. Details: the calculation guide.