Environmental Rules in Cedar Park, TX (2026)
4 verified environmental rules for Cedar Park, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Cedar Park requires developers to size stormwater systems for a fully developed, undetained drainage area and dedicate drainage easements at least 25 feet wide for open channels or 15 feet for enclosed storm sewers.
Cedar Park Stormwater Drainage Rules
Some RestrictionsCedar Park Code of Ordinances § 12.16.011(a), (b)
Computation of stormwater runoff shall be based on a fully developed undetained contributing drainage area or watershed and shall be in accordance with the drainage criteria manual. (b) Easements or rights-of-way shall be dedicated by the owner of the property to be developed to the public for the purpose of containing all drainage facilities, open or enclosed, and all stormwater flows to th...
Erosion Control
Cedar Park requires either a full site development permit or a rough grading permit from the Engineering Department before any grading work can begin within city limits.
Cedar Park Grading Permit Requirement
Some RestrictionsCedar Park Code of Ordinances § 14.01.002(7)
A rough grading permit may be issued by the Engineering Department after review by the Engineering Department (engineer) and the Development Services Department (Director of Development Services, or their designee). (8) Any other minor site activity similar to those listed above and approved by the Development Services Department (Development Services Director). (Ordinance CO11-20-01-09-H1 ...
Flood Zones
Any development within Cedar Park's FEMA-mapped special flood hazard areas, covering both the Williamson and Travis County sides of the city, requires a development permit before construction, alteration, or a use change can begin.
Cedar Park Floodplain Development Permit Rule
Some RestrictionsCedar Park Code of Ordinances § 3.03.006(b)-(c)
The areas of special flood hazard identified by the Federal Emergency Management Agency in the current scientific and engineering report entitled, "The Flood Insurance Study (FIS) for Williamson County, Texas, and Incorporated Areas dated September 6, 2008..." and "The Flood Insurance Study (FIS) for Travis County, Texas, and Incorporated Areas" dated January 6, 2016...are hereby adopted by ref...
Flood Elevation Requirements
New and substantially improved residential structures in Cedar Park's mapped flood hazard areas must have their lowest floor, including any basement, elevated at least one foot above the base flood elevation.
Cedar Park One-Foot Freeboard Requirement
Some RestrictionsCedar Park Code of Ordinances § 3.03.008(b)(1)
Residential construction. New construction or substantial improvement of any residential structure shall have the lowest floor, including basement, elevated to one (1) foot above the base flood elevation. A registered professional engineer, architect or land surveyor shall submit a certification to the Floodplain Administrator that these standards as proposed in section 3.03.007(c)(1)(A), are s...
Looking for Williamson County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Cedar Park city rules.
Environmental Rules in Williamson County →