Ord 2016-050/revisions to the San Marcos City Code of Ordinance Chapter 39: Flood Damage Prevention Ordinance

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(3) The floodplain administrator will obtain, review, and reasonably use any base flood elevation and floodway data available from a federal, state, or other source, including data developed pursuant to subsection 39.042(2). When such base flood elevation data is used, the new construction, substantial improvements, or other development must meet the elevation and non - elevation requirements of sections 39.043 through 39.046. (4) When the base flood elevation data is used, the floodplain administrator will: a. Obtain from the developer in the form of an elevation certificate the elevation (in relation to the mean sea level) of the lowest floor (including the basement) of all new and substantially improved structures; b. Obtain, if the structure has been flood proofed in accordance with the requirements of section 39.043, the elevation in relation to the mean sea level to which the structure has been flood proofed; and c. Maintain a record of all such information. (5) When the base flood elevation data is not available from any source, the lowest floor of the new construction and substantial improvements must be elevated to three feet above the highest adjacent grade, (or two feet above the highest crown of the adjacent roadway). (6) Any alteration, repair, reconstruction or improvements to a building that is in compliance with the provisions of this article must meet the requirements of "new construction" as contained in this article; and (7) Any alteration, repair, reconstruction or improvements to a building that is not in compliance with the provisions of this article may be undertaken only if the non- conformity is not furthered, extended, or replaced. Sec. 39.043. Specific standards for non eoastal high hazard areas AE, AH, and AO Zones. In all fi^n eoastal afeas of speeial flood haza-dZones AE AH and AO where base flood elevation data has been provided, as set forth in section 39.021, the following provisions apply: (1) Compliance with the standards in section 39.041. (2) Residential structures. a. All new construction or substantial improvements of residential structures within zones AE and AH must have the lowest floor (including basement) elevated to two feetene foot above the base flood elevation.