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PIP- NOV 17 1992 BOOK PA- E Fr watercourse and adjacent lands that must remain unobstructed to convey the regulatory flood discharge without causing flood elevations to rise along any stretch of the watercourse above a specified permissible increase known as the floodway surcharge. The floodway surcharge shall be established, considering both existing and potential development, at a level that avoids an increase in potential flood damage. The floodway surcharge may be increased; however, if a developer wishes to construct some additional obstruction, he must first obtain flowage easements from the owners of all land that would be affected by increased levels. In no case, however, may a floodway surcharge exceed one foot. The floodway shall normally be calculated assuming equal encroachment on the floodplain from both sides of the watercourse, unless legally enforceable deed restrictions, limiting development rights, are recorded for the lands needed for the floodway. (e) Flood Hazard Zones, Critical Flood Zones, Coastal High Hazard Zones and flood elevation data may be identified through flood hazard studies and delineated on the Official Flood Hazard Map. A copy of the Official Flood Hazard Map and supporting data is attached and incorporated by reference into this ordinance (Appendix B). As new or better information becomes available, this ordinance will be amended to incorporate new maps and flood elevations or other data. Current maps and supporting information may be inspected at: Indian River County Administration Building Community Development Division 1840 25th Street Vero Beach, FL 32960 (f) Sufficient funds have not been available to map the entire land area of Indian River County and perform the engineering studies necessary to identify Flood Hazard Zones, Critical Flood Zones, Coastal High Hazard Zones and Flood Protection Elevations. The standards of this ordinance shall also apply to development outside of mapped area, and information submitted by the developer or otherwise available to the Community Development Director shall be used to determine whether the project is within a Flood Hazard Zone as set forth above.