Imperial County, CA Roof Snow Load - 0 psf
Imperial County, CA: your roof's ASCE 7 snow number, in plain English
Imperial County's roofs are built to hold 0 psf of snow, the ASCE 7-22 figure a permit reviewer checks first.
In depth, not weight: that's roughly 0 inches of fresh, light snow, 0 inches of old, settled snow, or as little as 0 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. Snow load is not a factor in roof design here at all; the ground snow load figure maps to zero.
Imperial County in numbers
- Design roof snow load0 psf
- Ground snow load, ASCE 7 map0 psf
- National rank#2,554 of 2,758
- California rank#31 of 41
- Population181,724
- Annual snowfall, NOAA normal0 in.
- FIPS06025
Imperial County by the numbers
Nationally that's #2,554 out of 2,758 rated counties, the top 93%; within California alone, Imperial County ranks #31 of 41. 1.1 psf is California's typical county figure - Imperial County comes in 1.1 psf under it.
Imperial County, FIPS 06025, is home to 181,724 people near 33.0408°N 115.3554°W. Its 0 psf ground snow load figure is the map value; 0 psf is what a roof is actually designed for.
Imperial County's snowfall, most winters
0 in. a year: that's Imperial County's NOAA 1991-2020 snowfall normal, measured at BRAWLEY 2 SW, CA US (13.2 mi away). See the density guide.
Before you rely on Imperial County's number
Treat the Imperial 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.)