BasementSoil

Cedar City, Utah: what the ground under the city is like

Cedar City sits in Iron County, on basin and range. The soil mapped here is predominantly classified well drained — and that classification, not the rainfall total, is what decides how a basement behaves.

Moisture / seepage risk Moderate
36/100

22% of the mapped soil area around Cedar City is wet enough that the USDA describes it as needing artificial drainage.

Foundation movement risk Moderate
49/100

Linear extensibility 6.0% — high.

Water table risk Moderate
30/100

Shallowest annual water table around 170 cm (5.6 ft).

Values are for Iron County, which is what the soil survey resolves to. Full county report · soil map for a specific address.

The ground under Cedar City

Basin and Range. Alluvial fans and lacustrine sediments of former Lake Bonneville

Semi-arid, but the lacustrine clays on the basin floors are expansive while parts of the fans are collapsible — they settle when wetted. Two opposite failure modes in one metropolitan area.

When it shows up here

WaterJanFebMarAprMayJunJulAugSepOctNovDec
Ground movementJanFebMarAprMayJunJulAugSepOctNovDec

Rainfall is low all year, so the water line stays flat. What moves is the ground: the late spring and early summer dry-down is the sharpest part of the cycle, and summer monsoon storms end it abruptly.

Climate pattern for this physiographic region, not a forecast for your house and not from the soil survey. It answers a question homeowners actually ask: when does this show up.

What repairs cost in Utah

Reference jobModelled range
Interior drain along two walls + sump pump$5,200–$11,200
Exterior excavation of one 40 ft wall$3,900–$11,100
Underpinning on 10 piers$15,450–$32,950

Regional factor for UT: ×1.03. Full cost breakdown for Utah · run your own dimensions.

ZIP codes in Cedar City

84720, 84721

Soil does not stop at a city boundary, and neither does this data — every ZIP code above resolves to the same county soil survey. For the individual survey polygons around one address, use the soil map.

Questions about Cedar City

Is the soil the same everywhere in Cedar City?

No. These values describe Iron County as a whole, which is the unit the soil survey publishes. Within a city, map units change over a few hundred metres — the soil map draws the actual polygons around a point and is the honest answer for one address.

Which contractor should I call in Cedar City?

We do not rank or recommend individual firms and we are not one. What this page is for is knowing which kind of work the ground here points to before anyone quotes you, and which claim to check. If you want quotes, the form below passes your request to the named networks.

Does this replace an inspection?

No. It tells you what the ground is; an inspection tells you what your building is doing on it. The useful order is: read this, print the brief for your county, then have someone look.

Get quotes in Cedar City

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