Safety of Dams Flood and Earthquake Criteria (1985) / Chapter Skim
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Appendix F: Glossary
Appendix F: Glossary
Pages 255-258
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From page 255... ...
EMERGENCY ACTION PLAN A predetermined plan of action to be taken to reduce the potential for property damage and loss of lives in an area affected by a dam break. EPICENTER That point on the earth's surface that is directly above the focus of an earthquake.
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From page 256... ...
It is determined by regional and local studies that include a complete review of all historic earthquake data of events sufficiently nearby to influence the project, all faults in the area, and attenuations from causative faults to the site.
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From page 257... ...
SAFETY EVALUATION EARTHQUAKE (SEE) The earthquake, expressed in terms of magnitude anal closest distance from the dam site, or in terms of the characteristics of the time history of free-field ground motions, for which the safety of the dam and critical structures associated with the dam is to be evaluated.
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From page 258... ...
UNIT HYDROGRAPH The hydrograph of flow from a watershed produced by a unit volume of runoff generated during a specific period of rainfall excess in the watershed. In the United States a unit hydrograph normally represents 1 inch of runoff volume.
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