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Utah soil by county

Across Utah's mapped land, shrink-swell clay limits houses without basements on 4% and a shallow water table limits basements on 9%.

Highest clay shares: Cache County (22%), Sanpete County (16%), Morgan County (15%), Millard County (13%), Salt Lake County (13%). Highest water-table shares: Tooele County (36%), Box Elder County (23%), Weber County (20%), Cache County (18%), Salt Lake County (17%).

Data as of September 22, 2026 · 29 counties

Beaver County: 5%Box Elder County: 2%Cache County: 22%Carbon County: 0%Daggett County: 2%Davis County: 4%Duchesne County: 1%Emery County: 3%Garfield County: 4%Grand County: 4%Iron County: 6%Juab County: 3%Kane County: 4%Millard County: 13%Morgan County: 15%Piute County: no dataRich County: 1%Salt Lake County: 13%San Juan County: 3%Sanpete County: 16%Sevier County: 2%Summit County: 9%Tooele County: 0%Uintah County: 3%Utah County: 7%Wasatch County: 11%Washington County: 4%Wayne County: 6%Weber County: 7%
Expansive clay: share of mapped land where shrink-swell clay limits houses without basementsunder 10%10-25%25-40%40-60%60%+
Beaver County: 1%Box Elder County: 23%Cache County: 18%Carbon County: 1%Daggett County: 1%Davis County: 16%Duchesne County: 3%Emery County: 3%Garfield County: 1%Grand County: 0%Iron County: 1%Juab County: 2%Kane County: 0%Millard County: 11%Morgan County: 2%Piute County: no dataRich County: 7%Salt Lake County: 17%San Juan County: 1%Sanpete County: 9%Sevier County: 6%Summit County: 6%Tooele County: 36%Uintah County: 3%Utah County: 10%Wasatch County: 5%Washington County: 1%Wayne County: 1%Weber County: 20%
High water table: share of mapped land where a shallow water table limits basementsunder 10%10-25%25-40%40-60%60%+

Every county in Utah

Select a column heading to sort.
Beaver County 5% 1% 100% 2 1976
Box Elder County 2% 23% 100% 3 1983
Cache County 22% 18% 100% 7 1992
Carbon County under 1% 1% 100% 5 1972
Daggett County 2% 1% 100% 0 1979
Davis County 4% 16% 100% 21 1993
Duchesne County 1% 3% 100% 0 1986
Emery County 3% 3% 100% 2 1978
Garfield County 4% 1% 100% 2 1982
Grand County 4% under 1% 100% 8 1988
Iron County 6% 1% 100% 9 1997
Juab County 3% 2% 100% 1 1982
Kane County 4% under 1% 100% 4 1994
Millard County 13% 11% 100% 0 1974
Morgan County 15% 2% 100% 0 1997
Piute County n/a n/a 100% 0 1976
Rich County 1% 7% 100% 0 1992
Salt Lake County 13% 17% 100% 56 1986
San Juan County 3% 1% 100% 0 1986
Sanpete County 16% 9% 100% 1 1985
Sevier County 2% 6% 100% 2 1977
Summit County 9% 6% 100% 15 1995
Tooele County 0% 36% 100% 2 1998
Uintah County 3% 3% 100% 1 1992
Utah County 7% 10% 100% 25 2001
Wasatch County 11% 5% 100% 5 2005
Washington County 4% 1% 100% 22 2003
Wayne County 6% 1% 100% 0 1985
Weber County 7% 20% 100% 31 1984

How these shares are counted

Shares are of mapped land in USDA's soil survey (SSURGO), weighted by each soil's share of every map unit. Drought is the US Drought Monitor's D1-or-worse share on the September 22, 2026 map. Flood losses are FEMA NFIP records since 2016. Sources and methods.