Stormwater Management: Garland vs Grand Prairie
How do stormwater management rules compare between Garland, TX and Grand Prairie, TX?
Garland has fewer restrictions than Grand Prairie.
Garland, TX
Dallas County
Garland regulates stormwater management through its Municipal Separate Storm Sewer System (MS4) permit and the Garland Development Code. The city requires new development and significant modifications to control runoff on-site through retention, detention, or infiltration systems. Sites disturbing one or more acres must obtain a TPDES permit and implement a Stormwater Pollution Prevention Plan (SW3P). Illicit discharges to the storm drain system are prohibited.
View full Garland rules →Grand Prairie, TX
Dallas County
Grand Prairie requires all development to comply with the City Drainage Design Manual and erosion control standards. The Stormwater and Engineering Department reviews drainage plans and issues Clearing and Grubbing/Earthwork permits.
View full Grand Prairie rules →Key Facts Comparison
| Fact | Garland | Grand Prairie |
|---|---|---|
| Code Section | Garland Development Code — Stormwater Mgmt | - |
| Permit Type | MS4 TPDES permit | - |
| Construction Threshold | 1+ acre requires SW3P | - |
| On-Site Controls | Retention/detention required for new development | - |
| Illicit Discharge | Prohibited to storm drain system | - |
| Review | - | Drainage plans for all permits |
| Earthwork Permit | - | Required before clearing |
| Standards | - | City Drainage Design Manual |
| Department | - | Stormwater & Engineering |
Highlighted rows indicate differences between cities.
Garland FAQ
Does Garland require on-site stormwater controls?
Yes. New development and significant modifications must control stormwater runoff on-site through retention, detention, or infiltration systems per the Garland Development Code.
What triggers a stormwater permit for construction?
Construction disturbing one or more acres requires a TPDES Construction General Permit and SW3P from TCEQ. The city also reviews stormwater management plans as part of development approval.
Grand Prairie FAQ
What stormwater permits are needed in Grand Prairie?
Clearing and Grubbing/Earthwork permits are required. All development drainage plans are reviewed by the Stormwater and Engineering Department.
What standards apply?
The City Drainage Design Manual and city erosion control standards. All development must comply.
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