Payette County, ID Roof Snow Load - Case Study Area
Why doesn't Payette County have a snow load number?
ASCE 7's own snow load map has no single figure for Payette 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 16075, population 27,662. 386 US counties get this same case-study treatment; Payette County is one of them.
Payette County, ID: quick facts
- Population27,662
- Annual snowfall, NOAA normal15.4 in.
- FIPS16075
Payette County: average annual snowfall
Payette County sees about 15.4 in. of snow most winters, per the MALHEUR BRANCH EXP STN, OR US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Payette County'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.