Grading & Drainage: Cedar Hill vs Dallas
How do grading & drainage rules compare between Cedar Hill, TX and Dallas, TX?
Cedar Hill has fewer restrictions than Dallas.
Cedar Hill, TX
Dallas County
Cedar Hill requires engineered drainage plans for new development and prohibits altering lot grading in a way that diverts stormwater onto neighboring properties or blocks established drainage patterns.
View full Cedar Hill rules →Dallas, TX
Dallas County
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.
View full Dallas rules →Key Facts Comparison
| Fact | Cedar Hill | Dallas |
|---|---|---|
| - | - | |
| Code Section | - | Sec. 51A-8.611 (Storm Drainage Design) |
| Design Standard | - | 1% annual chance storm capacity |
| Manual | - | Dallas Drainage Design Manual |
| Financial Assurance | - | Required for grading improvements |
| Adjacent Property | - | No increased runoff without management |
Highlighted rows indicate differences between cities.
Cedar Hill FAQ
Dallas FAQ
What drainage standard does Dallas require?
All storm drainage facilities must safely convey a 1% annual chance (100-year) storm event per the Dallas Drainage Design Manual under Sec. 51A-8.611.
Can my development increase runoff to neighboring properties?
Dallas requires that development manage stormwater so as not to increase runoff onto adjacent properties without proper drainage infrastructure.
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