San Juan County, CO Roof Snow Load - Case Study Area
What "Case Study" means for San Juan County
ASCE 7's own snow load map has no single figure for San Juan County: the terrain is complex enough that the code (§7.2) requires an elevation-specific study rather than a county-wide value. That is the map being accurate, not a data gap.
FIPS 08111, population 821. 386 US counties get this same case-study treatment; San Juan County is one of them.
San Juan County, CO: quick facts
- Population821
- Annual snowfall, NOAA normal130.8 in.
- FIPS08111
San Juan County's snowfall, most winters
130.8 in. a year: that's San Juan County's NOAA 1991-2020 snowfall normal, measured at TELLURIDE 4WNW, CO US (16.1 mi away). See the density guide.
Before you rely on San Juan County's number
Treat the San Juan 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.)