Yukon-Koyukuk Census Area, AK Snow Load: Case Study Area
Why doesn't Yukon-Koyukuk Census Area have a snow load number?
ASCE 7's own snow load map has no single figure for Yukon-Koyukuk Census Area: 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 02290, population 5,099. 386 US counties get this same case-study treatment; Yukon-Koyukuk Census Area is one of them.
Yukon-Koyukuk Census Area in numbers
- Population5,099
- Annual snowfall, NOAA normal50 in.
- FIPS02290
Yukon-Koyukuk Census Area: average annual snowfall
Yukon-Koyukuk Census Area sees about 50 in. of snow most winters, per the TANANA CALHOUN MEM AP, AK US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Yukon-Koyukuk Census Area'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. See the methodology guide.