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High Risk Dams in Nevada

Nevada has 26 high hazard dams with a condition assessment of poor or unsatisfactory. These are dams where failure would probably cause loss of human life and where recognized safety deficiencies have been identified.

Of the 160 high hazard dams in Nevada, 26 (16%) have concerning condition ratings — 22 rated poor and 4 rated unsatisfactory.

Condition scale, best to worst
  1. Satisfactory No existing or potential safety deficiencies recognized; acceptable performance expected under all loading conditions.
  2. Fair No deficiencies under normal operating conditions; a rare flood or earthquake could create one.
  3. Poor A safety deficiency is recognized under normal operating conditions; remedial action is necessary.
  4. Unsatisfactory Worst rating. The dam is considered unsafe; a deficiency requires immediate or emergency remedial action.

"Not rated" means no assessment is on file in the National Inventory of Dams.

DamCountyHeight (ft)ConditionLast inspectedPurposeYear
Cat CreekMineral123Unsatisfactory10/02/20224 yrs agoWater Supply1932
Cave Creek DamWhite Pine83Poor08/04/20224 yrs agoRecreation1932
Bishop Creek DamElko80Unsatisfactory06/19/20233 yrs agoIrrigation1912
Eagle Valley Reservoir DamLincoln72Poor09/12/20233 yrs agoRecreation1965
Las Vegas Wash Upper Detention Basin DamClark71Poor04/29/20233 yrs agoFlood Risk Reduction1993
North Virginia Detention DamWashoe60Poor05/16/20233 yrs agoFlood Risk Reduction
Mill Creek Dam No 2Washoe60Poor09/13/20233 yrs agoFlood Risk Reduction
Illipah Pond DamWhite Pine60Poor08/02/20224 yrs agoIrrigation1981
Echo Canyon DamLincoln58Unsatisfactory09/12/20233 yrs agoRecreation1970
Smith Creek DamLander54Poor08/11/20233 yrs agoIrrigation1938
Bowman DamClark52Poor02/24/20224 yrs agoWater Supply1950
Verdi Meadows Wastewater Disposal DamWashoe49Poor08/02/20233 yrs agoOther1973
Northgate Golf Course DamWashoe46Poor05/16/20233 yrs agoRecreation
Pittman Horizon Ridge Detention Basin DamClark44Poor05/01/20233 yrs agoFlood Risk Reduction
Kingston Canyon DamLander41Poor08/10/20233 yrs agoRecreation1969
Summerlin Detention Basin #5 DamClark39Poor02/25/20224 yrs agoFlood Risk Reduction2002
Lamoille Road Detention DamElko37Poor07/26/20233 yrs agoFlood Risk Reduction
F-1 Dam Detention BasinClark26Poor02/25/20224 yrs agoFlood Risk Reduction2004
Wilcox Canyon #1 DamWashoe25Poor05/31/20233 yrs agoIrrigation
Spring Mountain Ranch DamClark19Poor02/23/20224 yrs agoIrrigation1945
Sierra Sage PondsWashoe16Poor06/01/20233 yrs agoRecreation1966
Sheep Camp Detention DamLyon16Poor11/15/20232 yrs agoFlood Risk Reduction
Pagni DamWashoe15Poor07/18/20233 yrs agoIrrigation
Duck Creek East DamWhite Pine15Poor08/04/20224 yrs agoWater Supply
Home Ranch Canyon DamWashoe15Unsatisfactory05/31/20233 yrs agoIrrigation
Washoe Lake DamWashoe12Poor07/18/20233 yrs agoIrrigation

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