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

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proposed within the Floodplain Buffer will be required to elevate to the Freeboard elevation and submit an elevation certificate to the City prior to the issuance of a Certificate of Occupancy. Sec. 39.047. Critical facilities. Construction of new critical facilities shall be, to the extent possible, located outside the limits of the SFHA, preferably outside the 0.2% annual chance floodplain. Construction of new critical facilities may be permissible within the SFHA if feasible alternative sites are unavailable. Critical facilities constructed within the SFHA shall have the lowest floor elevated 3.0 feet above the base flood elevation at the site. Flood proofing and sealing measures must be taken to ensure that toxic substances will not be displaced by or released into floodwaters. Access routes elevated to or above the level of the base flood elevation shall be provided to all critical facilities to the maximum extent possible. Sec. 39.048. Management methods and practices. The city shall use the following methods and practices for stormwater management: (1) Limit or regulate the rate of stormwater runoff from development to that which existed under conditions prior to development in those portions of the city as specified by the city; (2) Limit or control changes in the path of stormwater across or away from a site or development; (3) Limit or control alterations to existing watercourses and drainage facilities either within or outside areas of special flood hazard; (4) Control the use of existing or proposed drainage easements such that the easement remains useable for its intended purpose; (5) Limit or prohibit development in areas of special flood hazard; (6) Require compliance with city drainage design guidelines, specifications, and details; (7) Establish drainage easements to control development and limit flood damage; (8) Prohibit dumping of refuse, fill, garbage, grass clippings, brush, waste concrete, or other objectionable material in existing drainage facilities including swales, ditches, storm drains, inlets, watercourses, gutters, or culverts;