Mineral County, MT Roof Snow Load - Case Study Area
Mineral County, MT: no map figure, on purpose
ASCE 7's own snow load map has no single figure for Mineral 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 30061, population 5,195. 386 US counties get this same case-study treatment; Mineral County is one of them.
Mineral County at a glance
- Population5,195
- Annual snowfall, NOAA normal15.3 in.
- FIPS30061
Mineral County's snowfall, most winters
15.3 in. a year: that's Mineral County's NOAA 1991-2020 snowfall normal, measured at THOMPSON FALLS PH, MT US (34.5 mi away). Worth noting: the nearest station reporting snowfall normals sits 34.5 mi from Mineral County's center, so treat this as a regional figure rather than an exact one. See the density guide.
Before you rely on Mineral County's number
Treat the Mineral 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.