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Eugene -Springfield Area Natural Hazards Mitigation Plan <br />6. Appendices <br />US that have significant or high hazard potential.7 The NID rates each dam as either <br />high, significant, or low hazard potential depending on the probable impacts if a dam <br />fails. High hazard potential indicates loss of human life is likely if the dam fails. <br />In Lane County, there are 13 high hazard potential dams which are listed below in <br />Table H-1. All dams, except Fern Ridge and Santa Clara, are upstream from the <br />Eugene -Springfield area. <br />Table H-1 NID High Hazard Potential Dams Lane County <br />County <br />Dam Name <br />River <br />NID City <br />NID <br />NID <br />Height <br />Storage <br />feet <br />acre feet <br />Lane <br />Cottage <br />Coast Fork <br />COTTAGE <br />103 <br />50,000 <br />Grove <br />Willamette River <br />GROVE <br />Lane <br />Dexter <br />Middle Fork <br />EUGENE <br />117 <br />29,900 <br />Willamette River <br />Lane <br />Fall Creek <br />Fall Creek <br />SPRINGFIELD <br />205 <br />125,000 <br />Lane <br />Dorena <br />Row River <br />COTTAGE <br />154 <br />131,000 <br />GROVE <br />Lane <br />Lookout Point <br />Middle Fork <br />EUGENE <br />276 <br />477,700 <br />Willamette River <br />Lane <br />Blue River <br />Blue River <br />SPRINGFIELD <br />312 <br />89,000 <br />Lane <br />Hills Creek <br />Middle Fork <br />OAKRIDGE <br />341 <br />356,000 <br />Willamette River <br />Lane <br />Cougar <br />South Fork <br />SPRINGFIELD <br />519 <br />219,000 <br />McKenzie River <br />Lane <br />Fern Ridge <br />Long Tom River <br />EUGENE <br />49 <br />121,000 <br />Lane <br />Walterville <br />McKenzie River <br />WALTERVILLE <br />10 <br />345 <br />Storage Pond <br />Lane <br />Leaburg <br />McKenzie River <br />LEABURG <br />15 <br />459 <br />Canal and <br />Foreba <br />Lane <br />Walterville <br />McKenzie River <br />SPRINGFIELD <br />24 <br />275 <br />Forebay <br />Lane <br />Santa Clara <br />In System <br />SANTA CLARA <br />17 <br />64 <br />The extent of the flood hazard from these dams depends on which dam fails, amount of <br />impounded water, time of day, degree of failure, and proximity to population centers. <br />For example, if the Hills Creek Dam were to fail completely, the volume of water <br />I Ibid <br />6-132 January 2020 <br />