Corpus Christi, TX Environmental Rules: Erosion Control (2026)
Key Facts
- Manual
- Drainage Design Manual
- Permit Required
- Grading permit for significant disturbance
- Topography
- Flat coastal terrain: careful drainage needed
- Standard
- No increased runoff to neighbors
- Review
- Public Works Department
Summary
Corpus Christi regulates grading and drainage through its Drainage Design Manual and Unified Development Code. Grading permits are required for projects that alter terrain or drainage patterns. The city's flat topography and coastal location require careful drainage design. Projects must not increase runoff to neighboring properties. The Public Works Department reviews drainage plans and conducts inspections.
All projects shall use the Level of Protection as shown below, as applicable to the neighboring roadways and stormwater conveyance systems. a. Rural Roads — i. 5-year design storm must be contained in roadside swales; ii. 100-year design storm must not indicate ponding above the finished floor elevation of adjacent habitable structures. b. Local/Neighborhood Streets — i. 5-year design storm must be contained within conveyance system design and not pond across the roadway at inlets higher than the curb line; ii. 100-year design storm must not indicate ponding above the finished floor elevation of adjacent habitable space... d. Arterial Streets — i. 25-year design storm must be contained within the conveyance system and roadway, and inlet design shall not pond across more than one lane.
Official source re-checked September 8, 2026: the cited page had not changed since it was quoted.
Full Breakdown
Corpus Christi's grading and drainage ordinance regulates earth-moving activities to prevent flooding, erosion, and drainage conflicts. Grading permits are required when: filling or excavating more than 50 cubic yards of earth, altering natural drainage patterns, creating slopes steeper than 2:1, or grading within setbacks or easements. Permitted projects must maintain positive drainage away from structures and ensure stormwater does not concentrate onto neighboring properties. Swales, French drains, or storm drains may be required. Lot-to-lot drainage disputes are a common enforcement issue, property owners who redirect stormwater onto neighbors face corrective orders. Final grading must establish positive drainage with a minimum 2% slope away from foundations for at least 10 feet. Texas's humid subtropical to semi-arid climate and drought and conservation issues affect drainage design standards.
Violations & Fines
Unpermitted grading: $250–$1,000 fine plus restoration order. Directing stormwater onto neighbors: $100–$500 fine and mandatory correction. Fill over utilities or easements: immediate removal order.
Frequently Asked Questions
Do I need a grading permit in Corpus Christi?
Why is drainage important in Corpus Christi?
Sources & Official References
Other rules in Corpus Christi
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