Dodge County, WI Roof Snow Load - 21 psf

Dodge County, WI: your roof's ASCE 7 snow number, in plain English

In depth, not weight: that's roughly 46.2 inches of fresh, light snow, 16.8 inches of old, settled snow, or as little as 4.2 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. This is a meaningful design load - most modern-code homes handle it fine, though an addition, a carport or a flat-roofed section can be a weak spot.

Dodge County in numbers

• Design roof snow load21 psf
• Ground snow load, ASCE 7 map30 psf
• National rank#422 of 2,758
• Wisconsin rank#63 of 72
• Population88,635
• Annual snowfall, NOAA normal40.8 in.
• FIPS55027

Dodge County by the numbers

Nationally that's #422 out of 2,758 rated counties, the top 15%; within Wisconsin alone, Dodge County ranks #63 of 72. That's 9.9 psf below Wisconsin's own county-average design load of 30.9 psf.

Dodge County, FIPS 55027, is home to 88,635 people near 43.4296°N 88.7019°W. Its 30 psf ground snow load figure is the map value; 21 psf is what a roof is actually designed for.

Dodge County's snowfall, most winters

40.8 in. a year: that's Dodge County's NOAA 1991-2020 snowfall normal, measured at HORICON WWTP, WI US (3.6 mi away). See the density guide.

Before you rely on Dodge County's number

Treat the Dodge County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.

For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. (How this figure is calculated.)