Matanuska-Susitna Borough, AK Snow Load: Case Study Area
What "Case Study" means for Matanuska-Susitna Borough
ASCE 7's own snow load map has no single figure for Matanuska-Susitna 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 02170, population 117,613. 386 US counties get this same case-study treatment; Matanuska-Susitna Borough is one of them.
Matanuska-Susitna Borough at a glance
- Population117,613
- Annual snowfall, NOAA normal62 in.
- FIPS02170
Matanuska-Susitna Borough: average annual snowfall
Matanuska-Susitna Borough sees about 62 in. of snow most winters, per the ANDERSON LAKE, AK US station's 1991-2020 NOAA normal. Worth noting: the nearest station reporting snowfall normals sits 44.6 mi from Matanuska-Susitna Borough's center, so treat this as a regional figure rather than an exact one. See the density guide.
Read this before you use Matanuska-Susitna 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. Details: the calculation guide.