Iron-Washington Area, Utah, Parts of Iron, Kane, and Washington Counties

Survey Area UT634• Utah

The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Aridisols — dry-climate soils with limited organic matter and often calcium carbonate accumulation. This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Iron-Washington Area, Utah, Parts of Iron, Kane, and Washington Counties. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map Unit	Acres	Drainage	Hydro Group	Dwellings	Septic
Vennob-Bodacious-Rock outcrop association, 15 to 50 percent slopes	59K	Well drained	D	Very limited	Very limited
Checkett-Rock outcrop complex, 8 to 25 percent slopes	55K	Well drained	D	Very limited	Very limited
Sevy-Taylorsflat complex, 2 to 8 percent slopes	44K	Well drained	C	Somewhat limited	Somewhat limited
Antelope Springs loam, 0 to 2 percent slopes	40K	Well drained	D	Somewhat limited	Very limited
Taylorsflat loam, 2 to 5 percent slopes	39K	Well drained	C	Not limited	Very limited
Chuska-Checkett gravelly loams, 8 to 25 percent slopes	38K	Well drained	D	Very limited	Very limited
Hiko Peak gravelly sandy loam, 2 to 15 percent slopes	37K	Well drained	B	Somewhat limited	Somewhat limited
Checkett-Rock outcrop complex, 5 to 40 percent slopes	35K	Well drained	D	Very limited	Very limited
Escalante sandy loam, 0 to 5 percent slopes	33K	Well drained	B	Not limited	Somewhat limited
Bullion-Antelope Springs complex, 0 to 2 percent slopes	29K	Well drained	D	Very limited	Very limited
Syrett-Mudcree complex, 25 to 60 percent slopes	24K	Well drained	C	Very limited	Very limited
Woodrow silty clay loam, saline, 0 to 2 percent slopes	24K	Well drained	C	Somewhat limited	Very limited
Radec-Checkett association, 8 to 25 percent slopes	23K	Well drained	D	Very limited	Very limited
Rob Roy extremely cobbly loam, 15 to 50 percent slopes	23K	Well drained	C	Very limited	Very limited
Wales loam, 0 to 2 percent slopes	21K	Well drained	C	Somewhat limited	Somewhat limited
Faim clay loam, 4 to 40 percent slopes	21K	Well drained	C	Very limited	Very limited
Manselo-Antelope Springs silt loams, 0 to 2 percent slopes	21K	Well drained	C	Somewhat limited	Very limited
Ocambee extremely cobbly loam, 25 to 40 percent slopes	20K	Well drained	C	Very limited	Very limited
Garbo-Deerlodge complex, 2 to 8 percent slopes	18K	Well drained	C	Not limited	Somewhat limited
Faim clay loam, 4 to 25 percent slopes	18K	Well drained	C	Very limited	Very limited

Soil Orders in This Area

The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.

Aridisols

Dry-climate soils with low organic matter. Often have caliche layers that make excavation difficult. Low shrink-swell is good for foundations.

Mollisols

Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.

Entisols

Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.

What This Means

Building & Foundations

About 55% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes. A geotechnical assessment is recommended before building.

Septic Systems

About 75% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.

Gardening & Agriculture

Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.