Denton County, TX Environmental Rules: Erosion Control (2026)
Key Facts
- Foundation Slope
- 2% minimum for 10 feet
- Retaining Wall Permit
- Required over 4 feet exposed
- Compaction
- 95% standard Proctor for structures
- Drainage Easements
- Must remain clear and unobstructed
Summary
Denton County and its cities require grading permits for land-disturbing activities and enforce drainage standards to prevent stormwater runoff from adversely affecting neighboring properties. Development must maintain predevelopment drainage patterns or provide engineered solutions to handle increased runoff.
Sec. 232.003. SUBDIVISION REQUIREMENTS. By an order adopted and entered in the minutes of the commissioners court, and after a notice is published in a newspaper of general circulation in the county, the commissioners court may:(1) require a right-of-way on a street or road that functions as a main artery in a subdivision, of a width of not less than 50 feet or more than 100 feet;(2) require a right-of-way on any other street or road in a subdivision of not less than 40 feet or more than 70 feet;(3) require that the shoulder-to-shoulder width on collectors or main arteries within the right-of-way be not less than 32 feet or more than 56 feet, and that the shoulder-to-shoulder width on any other street or road be not less than 25 feet o
Full Breakdown
Grading and drainage in Denton County are regulated by city development ordinances and county standards for unincorporated areas. A grading permit is required for most earth-moving activities that alter the natural drainage pattern of a property. Cities within the county require a drainage study or analysis for residential and commercial developments to demonstrate that post-development runoff does not exceed pre-development rates. The City of Denton requires developments to maintain a positive drainage slope of at least 2 percent away from building foundations for a minimum of 10 feet.
Fill material must be compacted to at least 95 percent of standard Proctor density when supporting structures. Cut and fill slopes must not exceed a 3:1 ratio unless engineered retaining walls are used. Retaining walls over 4 feet in exposed height require engineered plans and a building permit. Denton County drainage easements must remain clear of structures, fences, and obstructions that could impede stormwater flow. Property owners may not alter drainage easements or redirect stormwater onto neighboring properties. Cities such as Flower Mound and Corinth require lot-to-lot drainage analyses showing that grading does not adversely affect adjacent properties. In unincorporated areas, the Denton County Engineering Department reviews grading plans for subdivisions and commercial developments to ensure compliance with county drainage criteria.
Violations & Fines
Grading without a permit can result in stop-work orders and fines up to $2,000 per day. Altering drainage easements or causing flooding on neighboring properties can result in enforcement action and civil liability.
Frequently Asked Questions
Do I need a grading permit in Denton County?
Can I redirect stormwater drainage on my property?
Sources & Official References
Other rules in Denton County
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