City of McKinney
City of McKinney — Public Works / Engineering Department
CityMS4 Phase IIVerified 2026-03
Local Permit / Authorization
- Permit Required
- Yes
- Permit Name
- Grading and Erosion Control Permit
- Submit To
- City of McKinney — Public Works / Engineering Department
- Lead Time
- 10–15 business days; larger or complex projects may require additional time
- Application Method
- Submit via City of McKinney online permitting portal (MyMcKinney / EnerGov) or in person at McKinney Development Center, 221 N. Tennessee St., McKinney, TX 75069; drainage study, grading plan, and ESC plan required
- Fee
- Contact agency for current fee schedule; fees typically based on disturbed acreage
Water Quality Standards
- Impervious Cover Limit
- No city-wide impervious cover percentage cap; post-construction stormwater quality controls required for sites disturbing ≥1 acre; McKinney's post-construction program requires on-site BMPs for qualifying development
- On-Site Treatment Required
- Yes
- Detention Required
- Yes
- Detention Standard
- Post-development peak discharge must not exceed pre-development rates for the 2-, 10-, and 100-year storm events per McKinney Drainage Design Criteria Manual; water quality volume capture required for sites meeting thresholds; detention/water quality facilities must be maintained under a recorded maintenance agreement
- Turbidity Standard
- Comply with TCEQ TXR150000 construction effluent limits; post-construction WQ BMPs must meet McKinney MS4 Phase II minimum control measure requirements
Local SWPPP / Drainage Plan
- Local Plan Required
- Yes
- Plan Name
- SWPPP per TCEQ TXR150000; McKinney requires local ESC plan as part of Grading and Erosion Control Permit
- PE Stamp Required
- Yes
McKinney requires an ESC plan sealed by a licensed Texas PE as part of the grading permit application. Post-construction BMP design must be included in the permit submittal and documented in a maintenance agreement recorded with Collin County. BMP inspection and maintenance logs must be kept and may be audited by the city.
Local Inspection Requirements
- Requirements
- McKinney Engineering Department conducts routine and complaint-driven construction site inspections. Inspections required at permit initiation, rough grading, and project closeout. Post-construction BMP inspection required before final permit release. Permittee must respond to inspection deficiencies within a specified cure period or face stop-work orders.
- Inspector Qualification
- TCEQ-qualified inspector required per CGP; McKinney may require documentation of on-site inspector credentials
Special Overlay Zones
East Fork Trinity River / Tributary Corridors
Trigger: Development within or adjacent to East Fork Trinity River watershed tributaries
Restriction: Potential USACE Section 404/401 jurisdiction; additional state and federal permits may be required; coordinate with USACE Fort Worth District and TCEQ
Lake Lavon Contributing Watershed
Trigger: Development in drainage basins tributary to Lake Lavon (USACE reservoir, NTMWD water supply)
Restriction: Enhanced water quality controls required to protect drinking water supply; coordinate with NTMWD and USACE
FEMA Special Flood Hazard Area (SFHA)
Trigger: Development within mapped 100-year floodplain
Restriction: Floodplain development permit required from City of McKinney Floodplain Administrator; no net fill without compensatory storage
Design Manual
- Manual Name
- City of McKinney Drainage Design Criteria Manual
Official Resources
Jurisdiction Notes
McKinney has been one of the fastest-growing cities in the United States. Early pre-application meetings are strongly recommended for complex or large-scale projects. McKinney coordinates with Collin County, NTMWD, and neighboring cities (Frisco, Allen, Prosper) on regional drainage issues. Post-construction BMP maintenance agreements are strictly enforced.
Remember: These local requirements are in addition to the TCEQ state construction permit. Both must be satisfied before breaking ground.
Disclaimer: This information is provided for general reference only. Always verify requirements directly with City of McKinney — Public Works / Engineering Department and the agency website before beginning construction.