Drainage area.
San Antonio City Code § 34-914
in effectSec. 34-914. - Drainage area.
(a) The floodplain preservation area shall be extended to the EARZ drainage area in the Extra-Territorial Jurisdiction (ETJ). This floodplain preservation area will be applied to creeks with watersheds greater than three hundred (300) acres and the allowable activities will be as described in section 34-912(b) Allowable Activities in Floodplain Preservation Area.
(b) The floodplain buffer zone shall be required adjacent to the floodplain preservation area using the buffer width formula established in this division. The maximum impervious cover in the drainage area buffer zone shall be ten (10) percent. This requirement is considered to be more flexible in the drainage area than in the recharge zone.
(c) The regulations contained in this section shall not apply to any activity allowed by a floodplain development permit issued before the effective date of this division, or for which application was made before the effective date of this division.
(Ord. No. 81491, § 1(App. I), 1-12-95)
Source: City of San Antonio, City Code, City Charter and Unified Development Code (Municode Library, library.municode.com)URL: https://library.municode.com/tx/san_antonio/codes/code_of_ordinances?nodeId=PTIICO_CH34WASE_ARTVIWAQUCOPOPR_DIV6AQREZOWAPR_SDDPOPRCR_S34-914DRARFetched: 10/27/2026