COMPUTATION OF STORMWATER RUNOFF.
Austin City Code § 25-7-8
in effect§ 25-7-8 - COMPUTATION OF STORMWATER RUNOFF.
(A) Except as provided in Subsection (B), stormwater runoff shall be computed on the basis of a fully developed contributing drainage area or watershed as determined under the Drainage Criteria Manual.
(B) When determining the runoff generated from the 500-year flood for the purpose of determining the 100-year floodplain under Subsection (B) of Section 25-7-6 (Determination of the 100-Year Floodplain), stormwater runoff shall be computed on the basis of an existing developed contributing drainage area or watershed.
Source: Ord. 20131017-046; Ord. No. 20191114-064, Pt. 5, 11-25-19.
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=TIT25LADE_CH25-7DR_ART1GEPR_S25-7-8COSTRUFetched: 10/27/2026
