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communities located on both the Indian and Sebastian rivers. <br /> Vulnerability in the rest of the County is low to very low, with <br /> the exception of specific locations along some drainage <br /> canals. The Department of Public Works has identified the <br /> following areas as being in need of beach nourishment <br /> projects: <br /> • Sectors 1 & 2 — R-4 to R-17; <br /> • Sector 3 — R-20 to R-55; <br /> • Sector 5 — R-74 to R-86; and, <br /> • Sector 7 — R-97 to R-107. <br /> Risk Assessment. FDEP updated a statewide assessment <br /> of beach erosion in 2014. In that assessment, FDEP <br /> defined the "critical erosion area" as a segment of shoreline <br /> where natural processes or human activity have caused or <br /> contributed to erosion and recession of the beach or dune <br /> system to such a degree that upland development, <br /> recreation interests, wildlife habitat, or important cultural <br /> resources are threatened or lost. <br /> There are three critical erosion areas (15.7 miles) in Indian <br /> River County. The northern 9.5 miles (R1-R51.3) south of <br /> Sebastian Inlet is critically eroded threatening State <br /> Road AIA, Sebastian Inlet State Park facilities, the McLarty <br /> Treasure Museum, and private development along <br /> Ambersand Beach, Sanderling, Summerplace, and <br /> Wabasso Beach. The museum has a rock revetment, and <br /> inlet sand transfer is conducted south of the inlet. A beach <br /> restoration project has been constructed at Ambersand <br /> Beach. The northern 3.1 miles of Vero Beach (R70-R86) is <br /> critically eroded with development and recreational interests <br /> being threatened. Much of this area has seawalls, dune <br /> restoration, and small dune nourishment projects, although a <br /> major beach restoration has not yet been designed. In <br /> southern Indian River County a 3.1-mile segment (R99- <br /> R115.7) is critically eroded threatening development <br /> interests. A beach restoration project has been constructed <br /> along a portion of this area (FDEP 2010). <br /> j. Droughts — Hazard Identification. Drought is a normal, <br /> recurrent feature of climate, although many perceive it as a <br /> rare and random event. In fact, each year some part of the <br /> U.S. has severe or extreme drought. Although it has many <br /> Indian River County Comprehensive Emergency Management Plan Basic Page 46 <br />