North Slope Borough, AK Roof Snow Load - Case Study Area
What "Case Study" means for North Slope Borough
ASCE 7's own snow load map has no single figure for North Slope Borough: 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 02185, population 10,663. 386 US counties get this same case-study treatment; North Slope Borough is one of them.
North Slope Borough at a glance
- Population10,663
- Annual snowfall, NOAA normal57.6 in.
- FIPS02185
North Slope Borough: average annual snowfall
North Slope Borough sees about 57.6 in. of snow most winters, per the COLVILLE VILLAGE, AK US station's 1991-2020 NOAA normal. Worth noting: the nearest station reporting snowfall normals sits 99.4 mi from North Slope Borough's center, so treat this as a regional figure rather than an exact one. See the density guide.
Read this before you use North Slope Borough's figure
The figure above assumes the case ASCE 7-22 treats as typical: a heated, ordinary-occupancy home on a partially exposed site. Change any of those - exposure, heating, roof pitch, occupancy category - and the real design number moves.
A building permit needs the number at your exact address, not the county average - the free ASCE 7 Hazard Tool returns that from your coordinates in about a minute and produces a PDF a plan reviewer will accept. (How this figure is calculated.)