Arlington sits on the Blackland Prairie formation, a region dominated by expansive clays and shallow topsoil over weathered chalk and marl. These clay-rich soils, while fertile, are highly susceptible to surface erosion during heavy rain events. The city's rolling terrain and rapid suburban development have created numerous cut-and-fill slopes where water runoff concentrates. For any site work near the Trinity River tributaries or along the escarpment zones east of I-35, a thorough soil erosion analysis becomes essential to prevent gully formation and sediment loss. Before grading a lot, we often recommend a permeability test to measure infiltration rates, which directly influence erosion potential.
In Arlington's Blackland clays, a 2% increase in slope can triple soil loss rates during a 10-year storm event.
Methodology and scope
Soils in south Arlington near the Mansfield border tend to be more sandy and permeable than the heavy clays found in north Arlington around the DFW airport corridor. This contrast means erosion risks vary block by block. Our erosion analysis covers several key factors: soil texture and organic content, slope angle and length, rainfall intensity records from the nearby DFW weather station, and existing vegetative cover. We also assess the effects of compaction from construction traffic, which reduces infiltration and increases runoff. When erosion is already visible, we combine field inspection with asentamiento diferencial studies to see if soil loss has compromised foundation support. The goal is to give property owners clear data on sheet, rill, and gully erosion before it becomes a structural problem.
Technical reference image — Arlington
Local considerations
Arlington's growth since the 1970s pushed residential development onto steeper slopes west of Green Oaks Boulevard. Many subdivisions were carved into hillsides without adequate erosion control measures. Today, homeowners in these neighborhoods face progressive soil loss that can undermine retaining walls, expose utility lines, and cause muddy overland flow during storms. The risk is highest on slopes with less than 50% vegetative cover and where original topsoil was stripped during construction. We have documented cases in Arlington where repeated erosion cycles led to shallow landslides on slopes as gentle as 12%, highlighting why early detection matters.
Field inspection and classification of erosion features (sheet, rill, gully) with GPS mapping. Includes soil sampling for texture and organic matter, slope measurement, and photographic documentation for permitting.
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Quantitative Soil Loss Modeling
Application of the Revised Universal Soil Loss Equation (RUSLE2) using local rainfall data from DFW and site-specific soil erodibility values. Output includes annual soil loss rates in tons/acre and recommendations for erosion control.
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Erosion Control Plan Development
Design of sediment basins, silt fences, check dams, and vegetative stabilization strategies compliant with Arlington's stormwater management ordinances and TCEQ requirements.
Applicable standards
ASCE 7-16 (rainfall and erosion loads), IBC Chapter 18 (excavation and grading), ASTM D422 (particle size analysis), NRCS USLE/RUSLE methodology
Frequently asked questions
What is the difference between sheet erosion and gully erosion?
Sheet erosion removes a uniform layer of topsoil across a slope, often unnoticed until roots or gravel become exposed. Gully erosion cuts deeper channels that can reach several feet in depth. In Arlington's clay soils, sheet erosion typically precedes gully formation, so early detection through regular inspection is important.
How much does a soil erosion analysis cost in Arlington?
The cost typically ranges between $910 and $2,270 depending on the size of the site, the number of samples collected, and whether modeling is required. A basic visual assessment for a residential lot runs on the lower end, while a full RUSLE2 analysis for a commercial development is higher.
How long does the analysis take from start to finish?
A standard erosion site visit and field data collection takes one to two days. Laboratory analysis of soil samples adds another three to five business days. The final report with erosion control recommendations is delivered within seven to ten working days from the site visit.
Do I need an erosion analysis for a small residential project?
If your property is on a slope steeper than 5% or has exposed soil after grading, an analysis is strongly recommended. Arlington's building department may also require an erosion control plan for any project disturbing more than 1 acre of land. Even for smaller lots, preventing erosion early saves costly repairs to foundations and drainage systems.
Location and service area
We serve projects across Arlington and its metropolitan area.
