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I I I .1 I I I I I I I I I I I I I I I elevation of the crest will have to be determined during the design phase of the project when more detailed field surveyS are completed. It is recommended that the entire length of the embankment from Point A to Point B be improved. However, only the lengths shown would be depressed to elevation 4796.0 with the other por- tions being slightly higher. This will allow the flood water to be channeled to areas with less immediate obstructions. On pages through ,photographs of the existing embankment and structures are shown. Financial Considerations The e~timated project cost for the improvements recommended in this study is shown on page ($260,000.00). The Benefit/Cost Analysis which follows is based on the assumption that if the improvements are not completed a probable maximum precipitation flood would crest the existing embankment in the general area where the improvements are recommended. This would result in the failure of the dike, and the sudden release of approximately 1040 acre-feet of water. It is estimated that this failure would at a minimum, Cause approximately $20,000 additional damage to each of at least 25 homes and buildings immediately south of the embank- ment. Therefore, the estimated total additional damage caused by the failure of the embankment is $500,000.00. Since the total estimated project cost for improvements which would prevent this failure and subsequent damage is $260,000.00, the Benefit/Cost ratio is $500,000/$260,000 or 1.92 which is obviously positive. Conclusions and Recommendations The results of this feasibility study indicate that improvements to the southern embankment of the Kern Reservoir are required to prevent the failure of said em- bankment in the event of a probable maximum precipitation flood. It is, therefore, recommended that the improvements outlined in this study be implemented to provide an emergency overflow area utilizing the existing embank- ment and providing substantial erosion control. In this way, the probable maximum ; flood would be allowed to pass through the Kern Reservoir, and the downstream areas would receive the flood water in much the same fashion as if the reservoir did not exist.