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<br />for future flows now exists and will continue for an indefinite period <br /> <br />of time into the future. Both pas:: and ex:isting indicators show that all <br /> <br />three basins are excellent active debris flow source areas. Abundant material <br /> <br />rich in both clay and rock is p~esent Dn steep slopes and only a small <br /> <br />percentage of the available material was involved in the recent events. <br /> <br />Thus it can be stated with certainty that given the necessary precipitation <br /> <br />conditions, debris flows will continue to discharge large volumes of material <br /> <br />onto the fans and into the building area. <br /> <br />Construction of structures to control the debris flows could mitigate <br /> <br />future damage to existing buildings. Such mitigation would require knowledge <br /> <br />about the dynamics of the moving flows so that the sizes and strengths <br /> <br />of the mitigating structures can he rationally and economically designed. <br /> <br />- 13 - <br />