Dallas Development Code Sec. 51A-8.611 sets comprehensive requirements for grading and drainage. All storm drainage facilities must be designed to safely convey a 1% annual chance storm event per the Dallas Drainage Design Manual. Erosion control plans are required for any grading or clearing activity. Financial assurance is required for grading improvements. The city requires that development not increase stormwater runoff onto adjacent properties without proper management.
Dallas regulates grading and drainage through building and engineering codes. Grading permits required for excavation or fill over specified thresholds, typically 50 to 100 cubic yards. Site grading must direct drainage away from structures and not adversely affect neighboring properties. Drainage swales, French drains, and catch basins may be required. Retaining walls over 4 feet need engineering and separate permits. Compaction testing required for structural fill. Final grade must match approved plans. Property owners responsible for maintaining drainage facilities on their land.
Unpermitted grading: stop-work order and fines $250 to $2,500. Redirecting drainage to neighbors: corrective action required. Slope failure from improper grading: liability and remediation costs.
Dallas, TX
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