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Chapter 1s:Risk Assessment <br /> transportation would falter first; eventually, the electrical supply for the island would be <br /> reduced to geothermal (about 20% of the usual total) and hydro power (less than 5%). Most <br /> water and sewage systems would halt as would most communication systems. <br /> This section will assess the vulnerability for the following lifelines: <br /> • Transportation systems -- harbors, airports, roads and bridges, buses, automobile rental <br /> agencies <br /> • Energy systems--electrical/fuel, gas <br /> • Communication systems -- telecommunication networks, cell phone sites, radio <br /> transmitters <br /> • Water systems-- County water system <br /> • Wastewater systems --County sewerage system <br /> 18.1.10.1 Transportation <br /> 18.1.10.1.1 Harbors <br /> Hawaii island has two deep-draft harbors with port facilities that enable large ships to dock <br /> and unload: Hilo Port and Kawaihae Port (see Figure 18-10). For island communities, the <br /> resilience of port facilities is crucial to efficient post-disaster recovery since this is the entry <br /> point for bulk supplies and heavy equipment. <br /> 18-24 Hawaii County Multi-Hazard Mitigation Plan <br />