Environmental Rules in Richardson, TX (2026)
4 verified environmental rules for Richardson, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Richardson has adopted the 1989 Storm Drainage Design Manual, prepared by Shimek, Jacobs and Finklea, as the city's controlling storm drainage standard. The manual overrides any conflicting city ordinance, resolution or policy on storm drainage design and applies to every subdivision, development and drainage improvement inside the city and its extraterritorial jurisdiction.
Richardson Storm Drainage Design Standards
Some RestrictionsRichardson, Tex., Code of Ordinances § 20-6
(a)The city council, having reviewed the provisions of the Storm Drainage Design Manual of 1989, prepared by Shimek, Jacobs and Finklea, Consulting Engineers, finds the provisions of such Storm Drainage Design Manual to be proper and necessary in order to promote and protect the health, safety and general welfare of the city and its citizens, and the same is hereby approved and adopted by the c...
Erosion Control
Richardson makes every property owner and every contractor personally responsible for stopping silt, earth and topsoil from washing off a site onto city streets, sidewalks, storm drains or drainage easements, and the city can withhold permits, plats and certificates of occupancy until an uncontrolled site is stabilized.
Richardson Soil Siltation Control Duty
Some RestrictionsRichardson, Tex., Code of Ordinances § 23-280 (Owner responsibility, Art. VI - Soil Siltation Control)
It shall be the responsibility of each owner of property within the city, to take appropriate measures to control the gradual wearing away and siltation of soil materials from the owner's property, so as not to allow stormwater runoff to transport silt, earth, topsoil, etc., from the owner's property and to deposit the same on city streets, sidewalks, drainage easements or facilities, storm dra...
Flood Zones
Richardson requires new construction and substantial improvements to residential structures in a special flood hazard area to sit with the lowest floor, including any basement, elevated two feet above the base flood elevation. A licensed engineer or land surveyor must certify the elevation on a FEMA certificate, and floodways bar new fill or building outright unless engineering proves no rise in flood levels.
Richardson Floodplain Construction Elevation Rule
Some RestrictionsRichardson, Tex., Code of Ordinances § 9-67(a)
(a)Residential construction. New construction or substantial improvement of any residential structure shall have the lowest floor, including basement, elevated two feet above the base flood elevation. A registered professional engineer or land surveyor shall submit a FEMA elevation certificate to the city engineer that the standard of this subsection, as proposed in subsection 9-44(1)a., is sat...
Flood Elevation Requirements
In Richardson's FEMA special flood hazard areas, any new or substantially improved residential structure must have its lowest floor, including basement, elevated a full two feet above the base flood elevation, verified by a FEMA elevation certificate.
Richardson floodplain: lowest floor two feet above BFE
Some RestrictionsRichardson, Tex., Code of Ordinances ch. 9, art. III, sec. 9-67(a)
Residential construction. New construction or substantial improvement of any residential structure shall have the lowest floor, including basement, elevated two feet above the base flood elevation. A registered professional engineer or land surveyor shall submit a FEMA elevation certificate to the city engineer that the standard of this subsection, as proposed in subsection 9-44(1)a., is satisf...
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