Environmental Rules in Katy, TX (2026)
2 verified environmental rules for Katy, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
Erosion Control
Katy's minimum construction standards require storm sewers to contain a two-year storm without surcharging at minimum 0.1% gradient using Class III concrete pipe and follow Harris County PCPM hydrology standards.
Grading and Drainage Standards in Katy
Some RestrictionsTex. Local Government Code Sec. 232.003 (Subdivision Requirements - Drainage Specifications)
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) requir...
Flood Elevation Requirements
New construction and substantial improvements in Katy's FEMA special flood hazard area must set the finished floor at least 12 inches, one foot of freeboard, above the base flood elevation, or above the street centerline, curb top, or 500-year level, whichever is highest.
Katy, Texas Floodplain: 1 Foot of Freeboard Above BFE
Some RestrictionsCity of Katy Code of Ordinances, Flood Damage Prevention — Flood Hazard Reduction Standards, 1999 Code § 3.618 (amended by Ord. No. 3032, 4/25/2022)
New construction of any residential structure shall be based on free-board and must include a finished floor elevation of 12 inches above the centerline of the front street, 18 inches above the top of the curb, 12 inches above the base flood (100-year floodplain) elevation, or at or above the 500-year floodplain elevation, whichever is highest.
Looking for Fort Bend County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Katy city rules.
Environmental Rules in Fort Bend County →