Round Rock, TX Environmental Rules: Erosion Control (2026)
Key Facts
- Governing document
- Round Rock Drainage Criteria Manual, Section 9
- SWPPP threshold
- Required for disturbance over 1 acre
- Applies to
- All construction disturbing land, permitted or not
- Engineer certification
- Licensed PE must certify BMP calculations
- State tie-in
- Must comply with TPDES permit TXR150000
Summary
Round Rock requires an erosion and sedimentation control plan for any permitted construction, and a full Storm Water Pollution Prevention Plan once a project disturbs more than one acre, under the city's Drainage Criteria Manual.
All activities requiring a permit shall submit an erosion and sedimentation control plan that identifies, addresses, and minimizes to the reviewer's satisfaction all potential sources of sediment and other construction related pollution. Development/construction disturbing greater than one (1) acre shall also develop and implement a Storm Water Pollution Prevention Plan (SWPPP) as outlined in TPDES Construction General Permit (TXR150000).
Full Breakdown
Under the city's Drainage Criteria Manual Section 9, every construction project that disturbs land must plan and install erosion and sediment best management practices, whether or not a permit is required. Projects needing a permit must submit a control plan that satisfies the reviewer, and any site disturbing more than one acre must also carry a full Storm Water Pollution Prevention Plan under the state's TPDES general permit. A licensed engineer must certify supporting BMP calculations, and city inspectors and the design engineer are jointly responsible for maintaining controls through construction until the site is fully stabilized.
Violations & Fines
Reviewers can deny a plan lacking adequate BMP calculations, and inspectors can order field revisions or a full plan resubmittal for controls that fail during construction.
Frequently Asked Questions
Does Round Rock require an erosion control plan for construction?
Who has to follow Round Rock's erosion control rules?
Sources & Official References
Other rules in Round Rock
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Erosion Control in Nearby Cities
How other cities in Williamson County handle erosion control.