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Local Soil Report

Johnson City Soil and Foundation Risk: Anhalt clay, 1 to 3 percent slopes

Primary data: USDA/NRCS SSURGO. Mapped context only, not a property diagnosis.

Looking for foundation repair in Johnson City?

Use this soil report as supporting context, then review warning signs, evaluation steps, repair-scope questions, and options on the foundation repair city guide.

Foundation Repair in Johnson City, TX

Mapped Soil Profile: Johnson City, TX

Soil TypeAnhalt
Plasticity (PI)51.8
Expansion Potential14.6% LEP
Screening ClassSevere

What the mapped data shows

The USDA map unit associated with this Johnson City record is Anhalt clay, 1 to 3 percent slopes. Its listed component is Anhalt, with drainage reported as well drained. These labels describe an area on a survey map. Conditions can change within a lot and may be altered by grading, imported fill, construction, or drainage work.

For this record, the Plasticity Index is 51.8 and the registry screening class is Severe. The recorded PI of 51.8 makes moisture sensitivity worth considering alongside property-specific evidence. This is a screening signal, not proof that a foundation is moving.

How to interpret this for a home in Johnson City

A mapped screening class is context, not a diagnosis. Two houses in the same map unit can perform differently because of roof runoff, plumbing leaks, tree placement, slope, foundation design, and previous repairs.

Document where water collects after rain, photograph cracks with dates and a ruler for scale, and note changes in doors, windows, trim, and floors. If symptoms progress, property-specific measurements can help determine whether movement is active, historic, or cosmetic.

What this report cannot tell youSurvey data does not establish bearing conditions beneath the house or the correct repair system, quantity, or depth. Those questions require property-specific evidence.

What a sound evaluation should establish

  • Is movement active? Compare dated symptoms and repeat measurements.
  • Is water contributing? Review grading, drainage, irrigation, and plumbing.
  • What supports the proposed scope? Ask how the repair design follows from measurements and site conditions.

Check the mapped context for your address

Use local data as a screening step before deciding whether an on-site evaluation is needed.

Need to evaluate foundation symptoms in Johnson City?

Move from mapped context to property-specific evidence before choosing a repair scope.

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