Kodiak Island Borough, AK Roof Snow Load - Case Study Area
Why doesn't Kodiak Island Borough have a snow load number?
ASCE 7's own snow load map has no single figure for Kodiak Island 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 02150, population 12,654. 386 US counties get this same case-study treatment; Kodiak Island Borough is one of them.
Kodiak Island Borough in numbers
- Population12,654
- Annual snowfall, NOAA normal70.3 in.
- FIPS02150
Kodiak Island Borough: average annual snowfall
Kodiak Island Borough sees about 70.3 in. of snow most winters, per the KODIAK AP, AK US station's 1991-2020 NOAA normal. Worth noting: the nearest station reporting snowfall normals sits 53 mi from Kodiak Island Borough's center, so treat this as a regional figure rather than an exact one. See the density guide.
Read this before you use Kodiak Island 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.