

Action House Leveling is based in Mercedes, just minutes from Rio Hondo. You get same-day inspections, a crew that knows the local soil profile, and reinforced concrete piers engineered for the ground under your slab.
Rio Hondo sits directly on the Arroyo Colorado floodplain at the eastern edge of the Harlingen clay belt.
Soils are a mix of Harlingen clay on the upland portions and Camargo silt loam in the floodplain proper — the latter being alluvial deposits with high seasonal moisture content tied to arroyo stage.
PI on the uplands runs 45–60; the floodplain soils are more variable but generally moderate (25–40) with a high water table.
The arroyo's seasonal stage changes drive the dominant failure mode: floodplain slabs flex with every wet-dry cycle, and homes built against the arroyo banks see chronic perimeter settlement on the water side.
Concrete piers depth here needs to be specifically engineered to the zone — 14–18 feet in the floodplain.
Floodplain slabs flex with every change in Arroyo Colorado water level — recurring crack growth without piers.
Homes against the arroyo banks see the water side keep settling for decades.
Brackish groundwater this far up the arroyo still corrodes bare steel — concrete piers are mandatory.
Shallow pours with minimal rebar — corner cracks are universal on older Rio Hondo homes.
Yes — we work all of Cameron County including the arroyo communities. Same-day inspections in most cases.
All of 78583 — downtown, Hwy 106, FM 2925, and the arroyo corridor.
Yes — we engineer pier depth specifically for the alluvial floodplain profile.
Yes. Elevation gear, walk-through, written report — no charge.