REQUIREMENTS FOR APPROVAL.

Austin City Code tit. 30, ch. 30-4, art. 3

in effect

Austin City Code § 30-4-61 CRITERIA FOR APPROVAL OF DEVELOPMENT APPLICATIONS.

§ 30-4-61 - CRITERIA FOR APPROVAL OF DEVELOPMENT APPLICATIONS. (A) A development application may not be approved unless: (1) the proposed development application demonstrates sufficient capacity for the design flood, as determined under the Drainage Criteria Manual; (2) each proposed improvement is sufficiently strong to resist: (a) external pressure caused by earth or building; and (b) internal pressure or abrasion caused by water or debris; (3) the proposed grades will not permit water to gather in a pool that may become stagnant, excluding variable pools in creek beds as a result of natural channel design; (4) temporary and permanent measures to control erosion are sufficient to minimize siltation of the waterway, as determined under the Environmental Criteria Manual; and (5) the proposed development: (a) will not result in additional adverse flooding impact on other property; (b) except as provided by Subsection (B), to the greatest extent feasible preserves the natural and traditional character of the land and the waterway located within the 100-year floodplain; (c) except as provided by Subsection (C), includes on-site control of the two-year peak flow, as determined under the Drainage Criteria Manual and the Environmental Criteria Manual; (d) will not result in additional erosion impacts on other property; and (e) locates all proposed improvements outside the erosion hazard zone, unless protective works are provided as prescribed in the Drainage Criteria Manual. (B) A development application that proposes floodplain modification shall comply with Section 30-5-364 (Floodplain Modification). (C) A proposed development may provide off-site control of the two-year peak flow if the off-site control does not cause: (1) an adverse water quality impact from increased in-stream peak flow; or (2) streambank erosion. Source: Ord. 20131017-046.

Austin City Code § 30-4-62 CERTIFICATE OF PROFESSIONAL ENGINEER REQUIRED FOR CERTAIN ALTERATIONS AND IMPROVEMENTS.

§ 30-4-62 - CERTIFICATE OF PROFESSIONAL ENGINEER REQUIRED FOR CERTAIN ALTERATIONS AND IMPROVEMENTS. (A) The single office may not approve a preliminary plan, plat, or subdivision application if the application proposes an alteration or improvement of a bed or bank of a waterway unless the plan or specification is accompanied by a certificate bearing the seal of a Texas professional engineer certifying that: (1) the hydraulic and structural design is adequate; and (2) the proposed alteration or improvement complies with the ordinances of the city and county, the Drainage Criteria Manual, and the laws of this state. (B) Subsection (A) does not prohibit the single office from accepting a plan or specification for a minor alteration or improvement that, in the judgment of the single office, does not require certification by a Texas professional engineer. Source: Ord. 20131017-046; Ord. No. 20230831-142, Pt. 41, 9-1-23.

Austin City Code § 30-4-63 APPROVAL BY SINGLE OFFICE OF CERTAIN PERMITS AND CERTIFICATES.

§ 30-4-63 - APPROVAL BY SINGLE OFFICE OF CERTAIN PERMITS AND CERTIFICATES. If a development application requires the completion or partial completion of a drainage improvement before a building may be constructed on a lot, a building permit, certificate of compliance, or development permit may not be issued for the lot unless the single office approves the issuance. Source: Ord. 20131017-046.

Austin City Code § 30-4-64 DESIGN AND CONSTRUCTION OF DRAINAGE FACILITIES AND IMPROVEMENTS.

§ 30-4-64 - DESIGN AND CONSTRUCTION OF DRAINAGE FACILITIES AND IMPROVEMENTS. The design and construction of a drainage facility or improvement must: (1) be in accordance with the Drainage Criteria Manual; and (2) provide for maintenance and protection from erosion in accordance with the Environmental Criteria Manual. Source: Ord. 20131017-046.

Austin City Code § 30-4-65 ENCLOSED STORM DRAINS, BRIDGES, AND CULVERTS.

§ 30-4-65 - ENCLOSED STORM DRAINS, BRIDGES, AND CULVERTS. (A) The single office must approve the plans and specifications for a storm drain, bridge, or culvert. (B) The county's Transportation and Natural Resources Department or the City Manager may inspect the construction of each storm drain, bridge, or culvert. Source: Ord. 20131017-046.

Source: City of Austin, City Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/tx/austin/codes/code_of_ordinances?nodeId=TIT30AUTRCOSURE_CH30-4DR_ART3REAPFetched: 10/27/2026