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<br /> <br /> <br /> <br />persons should be reported immediately. <br /> <br />Notes <br /> <br />Some ~evee systems and flood control devices may be so soft <br />and water saturated that monitoring teams cannot walk or drive <br />upon them. In such instances, other monitoring methods can be <br />used. <br /> <br />It may be possible to monitor some 'structures by boat. This <br />method requires extreme care and the value of the monitoring <br />information should be weighed against the danger posed by this <br />method. Floating debris can easily puncture boat hulls and disable <br />propulsion systems. Boats used to patrol levees should be careful <br />that their wash does not further erode the levee. If a failure or <br />problem area is noted, boats should remain a considerable distance <br />from suspected danger points as tremendous currents can be <br />created if a system fails. <br /> <br />A safer way to remotely monitor levee and flood control <br />structures is by air. Helicopters are commonly used for air <br />monitoring and the services of the Civil Air Patrol (CAP) can be <br />used to support air reconnaissance missions. National Guard <br />helicopters may be equipped with night vision equipment that can <br />be used to patrol levees during the hours of darkness. <br /> <br />Levee patrols and monitoring teams serve as an early warning <br />system. The trouble they spot and report may give work crews <br />time to save the structure and prevent flooding in the community. <br /> <br />Page7-6 <br />