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.
Cedar Hill's drainage ordinance and engineering design manual require that new subdivisions, commercial sites, and significant residential additions submit a grading and drainage plan demonstrating that runoff is conveyed to a public drainage system, easement, or detention facility without increasing peak discharge to downstream lots. The city follows the iSWM (Integrated Stormwater Management) criteria common in North Texas for sizing detention and water quality features. Homeowners may not regrade lots, fill swales, or build retaining walls that obstruct the drainage pattern shown on the recorded subdivision plat. Lot-to-lot drainage disputes are common civil matters; the city enforces only when public drainage easements or recorded patterns are altered. Permits are required for retaining walls over 4 feet in height.
Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact Cedar Hill code enforcement directly for current fines, enforcement procedures, and hearing options.
Cedar Hill, TX
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Cedar Hill, TX
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