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High Risk Dams in Arizona

Arizona has 34 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 159 high hazard dams in Arizona, 34 (21%) have concerning condition ratings — 26 rated poor and 8 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
ElgoGraham133Poor09/03/20206 yrs agoRecreation1979
JaquesNavajo81Poor09/25/20242 yrs agoOther1953
Fool HollowNavajo78Poor09/20/20242 yrs agoRecreation1956
Black CanyonNavajo72Poor09/12/20242 yrs agoRecreation1964
Walnut CanyonCoconino70Poor10/23/20241 yr agoIrrigation1881
WheatfieldsApache64Poor06/25/20242 yrs agoIrrigation1963
SunriseApache58Poor09/02/20206 yrs agoRecreation1967
Davis (hawley Lake)Apache58Unsatisfactory10/21/20205 yrs agoRecreation1956
ReservationApache54Poor09/02/20206 yrs agoRecreation1965
CycloneApache50Poor08/25/20206 yrs agoRecreation1965
FredoniaCoconino49Poor05/02/20242 yrs agoFlood Risk Reduction1973
Buckeye Frs #1Maricopa49Poor10/22/20241 yr agoFlood Risk Reduction1974
Christmas TreeApache49Unsatisfactory09/08/20215 yrs agoRecreation1965
Stockton Wash RetardingGraham48Poor12/06/20232 yrs agoFlood Risk Reduction1964
Point of PinesGraham42Poor11/07/20223 yrs agoRecreation1966
BootlegNavajo41Unsatisfactory09/29/20206 yrs agoRecreation1965
A-1Apache40Poor11/08/20223 yrs agoRecreation1966
Tufa StoneGila39Unsatisfactory09/09/20215 yrs agoFlood Risk Reduction1944
Earl ParkApache38Poor10/22/20205 yrs agoRecreation1961
Shush Be ZahzeApache37Poor10/26/20205 yrs agoRecreation1966
Shush Be TouApache36Poor10/27/20205 yrs agoRecreation1966
CooleyNavajo36Unsatisfactory11/09/20223 yrs agoRecreation1963
PachetaApache35Poor10/20/20205 yrs agoRecreation1959
Millett SwaleNavajo35Poor05/14/20242 yrs agoFlood Risk Reduction1958
Central DetentionGraham32Poor10/23/20241 yr agoFlood Risk Reduction1948
Menager'sPima30Unsatisfactory09/27/20215 yrs agoFlood Risk Reduction1927
Upper Point of PinesGraham26Poor11/08/20223 yrs agoRecreation1965
Drift FenceApache24Poor10/20/20205 yrs agoRecreation1959
Bog TankApache20Unsatisfactory10/20/20205 yrs agoRecreation1957
ColterApache19Poor09/05/20242 yrs agoIrrigation1908
Dry LakeGraham19Unsatisfactory11/07/20223 yrs agoRecreation1935
Cook ReservoirGraham18Poor12/27/20232 yrs agoWater Supply1940
OdellCoconino14Poor08/08/20242 yrs agoIrrigation1978
LcwuaCochise6Poor02/14/20242 yrs agoFire Protection, Stock, Or Small Fish Pond

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