Ottawa County, MI Roof Snow Load - Case Study Area
Why doesn't Ottawa County have a snow load number?
This is one of a small number of counties where the map query itself came back empty rather than with a Case Study flag, most often because the county's reference point sits right at a shoreline. The real value is almost certainly close by; use the ASCE Hazard Tool directly for the exact address.
FIPS 26139, population 306,235 - Ottawa County's basic numbers, even without a mapped snow load.
Ottawa County, MI: quick facts
- Population306,235
- Annual snowfall, NOAA normal87.2 in.
- FIPS26139
Typical snowfall in Ottawa County, MI
NOAA's 30-year normal for Ottawa County: 87.2 in. of snow a year, from the MUSKEGON CO AP, MI US station. (fresh vs. packed vs. ice explains why.)
What this Ottawa County figure assumes
This is a county-level reference figure for a typical heated home built to Risk Category II (ordinary residential), on a partially exposed lot - the assumptions ASCE 7-22 itself treats as the default case. A steeper roof, a fully exposed hilltop lot, an unheated structure, or a higher risk category all change the actual number.
Ottawa County's permit office wants an address-specific figure, not this county average - the ASCE 7 Hazard Tool is free, takes under a minute, and outputs a PDF most reviewers accept. Details: the calculation guide.