Table 7: Historic Flooding Elevations Historic Approximate Flooding Peak (Feet Event Recurrence Source of Source Location NAVD88) Date Interval (years) Data Outlet of Inundation Inundation River at 19.8 1986 80 USGS gage River Big Ocean South Fork 700 feet upstream NRCS high Inundation 18.8 2007 50 of Fulton Road water marks River 4.3 Non-Levee Flood Protection Measures contains information about non-levee flood protection measures within Flood County such as dams, jetties, and or dikes. Levees are addressed in Section 4.4 of this FIS Report. Table 8: Non-Levee Flood Protection Measures Flooding Structure Type of Source Name Measure Location Description of Measure A.B. At entrance Constructed by USACE in Big Ocean Smith Jetties channel 1929 Jetty Floodville, along Several property owners in Berms and Big Ocean N/A the coast of the this city have placed berms riprap Big Ocean and riprap to protect homes Tidal Flood Weather Forecast Low-lying coastal Big Ocean N/A flooding Office issues storm tide areas warnings warnings 1.5 miles Inundation upstream of Maintained by Floodville N/A Dam River Rockhampton Waterworks Circle Not high enough to Inundation N/A Dike Various locations completely prevent River flooding 4.4 Levees For purposes of the NFIP, FEMA only recognizes levee systems that meet, and continue to meet, minimum design, operation, and maintenance standards that are consistent with comprehensive floodplain management criteria. The Code of Federal Regulations, Title 44, Section 65.10 (44 CFR 65.10) describes the information needed for FEMA to determine if a levee system reduces the risk from the 1% annual chance flood. This information must be supplied to FEMA by the community or other party when a flood risk study or restudy is conducted, when FIRMs are revised, or upon FEMA request. FEMA reviews the information for the purpose of establishing the appropriate FIRM flood zone.
Table 7: Historic Flooding Elevations Flooding Source Location Historic Peak (Feet NAVD88) Event Date Approximate Recurrence Interval (years) Source of Data Inundation River Outlet of Inundation River at Big Ocean 19.8 1986 80 USGS gage South Fork Inundation River 700 feet upstream of Fulton Road 18.8 2007 50 NRCS high water marks 4.3 Non-Levee Flood Protection Measures contains information about non-levee flood protection measures within Flood County such as dams, jetties, and or dikes. Levees are addressed in Section 4.4 of this FIS Report. Table 8: Non-Levee Flood Protection Measures Flooding Source Structure Name Type of Measure Location Description of Measure Big Ocean A.B. Smith Jetty Jetties At entrance channel Constructed by USACE in 1929 Big Ocean N/A Berms and riprap Floodville, along the coast of the Big Ocean Several property owners in this city have placed berms and riprap to protect homes Big Ocean N/A Tidal flooding warnings Low-lying coastal areas Flood Weather Forecast Office issues storm tide warnings Inundation River N/A Dam 1.5 miles upstream of Rockhampton Circle Maintained by Floodville Waterworks Inundation River N/A Dike Various locations Not high enough to completely prevent flooding 4.4 Levees For purposes of the NFIP, FEMA only recognizes levee systems that meet, and continue to meet, minimum design, operation, and maintenance standards that are consistent with comprehensive floodplain management criteria. The Code of Federal Regulations, Title 44, Section 65.10 (44 CFR 65.10) describes the information needed for FEMA to determine if a levee system reduces the risk from the 1% annual chance flood. This information must be supplied to FEMA by the community or other party when a flood risk study or restudy is conducted, when FIRMs are revised, or upon FEMA request. FEMA reviews the information for the purpose of establishing the appropriate FIRM flood zone.
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