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High Risk Dams in Oklahoma

Oklahoma has 37 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 420 high hazard dams in Oklahoma, 37 (8%) have concerning condition ratings — 28 rated poor and 9 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
Lake EllsworthComanche96Unsatisfactory11/16/20223 yrs agoWater Supply1961
Lake Carl BlackwellPayne72Poor04/27/20224 yrs agoWater Supply1937
Okmulgee LakeOkmulgee68Poor08/18/20224 yrs agoWater Supply1928
Shell Creek Lake DamOsage65Poor11/22/20223 yrs agoWater Supply1922
OverholserOklahoma61Poor10/06/20224 yrs agoWater Supply1919
Hominy LakeCreek60Unsatisfactory12/15/20223 yrs agoRecreation1956
Chickasha LakeCaddo57Poor12/28/20214 yrs agoWater Supply1958
Shawnee City Lake No.1Pottawatomie55Poor09/14/20224 yrs agoWater Supply1936
Clayton LakePushmataha53Poor12/06/20223 yrs agoRecreation1946
Quanah Parker DamComanche53Poor10/01/201511 yrs agoFish and Wildlife Pond1936
Waxhoma LakeOsage50Unsatisfactory08/04/20224 yrs agoWater Supply1955
Jim Hall LakeOkmulgee49Poor12/15/20223 yrs agoWater Supply1928
Cushing LakePayne48Unsatisfactory12/07/20223 yrs agoWater Supply1950
Weleetka LakeOkfuskee45Poor12/30/20223 yrs agoRecreation1923
Sahoma LakeCreek45Poor10/12/20223 yrs agoWater Supply1947
New BeggsOkmulgee43Unsatisfactory06/06/20224 yrs agoWater Supply1965
Lake Bar-dew DamWashington41Poor10/27/20223 yrs agoRecreation1938
Brown LakePittsburg41Poor10/26/20214 yrs agoWater Supply1943
Stigler LakeHaskell40Unsatisfactory12/16/20223 yrs agoWater Supply1939
Carlton LakeLatimer40Poor12/06/20223 yrs agoRecreation1938
Blue River DamBryan40Poor11/21/20223 yrs agoWater Supply1979
WewokaSeminole38Poor12/02/20214 yrs agoWater Supply1925
Nichols LakeOkmulgee37Poor12/15/20223 yrs agoRecreation1910
Orchard Lake DamAdair35Poor03/31/20215 yrs agoIrrigation1970
Guthrie LakeLogan33Poor12/13/20223 yrs agoWater Supply1919
Upper CanyonComanche30Unsatisfactory10/24/20196 yrs agoRecreation1905
HobartWashita29Poor12/23/20214 yrs agoWater Supply1933
Parthenia LakeCreek28Poor11/09/20223 yrs agoRecreation1934
LacyMurray27Unsatisfactory12/05/20223 yrs agoRecreation1920
Dry Creek Detention PondOklahoma25Poor10/17/20223 yrs agoFlood Risk Reduction1978
MasseyOklahoma21Poor01/05/20224 yrs agoOther1970
Summit LakeCleveland21Poor08/23/20224 yrs agoRecreation1960
Templo De AlabanzaCleveland20Poor01/17/20233 yrs agoRecreation1940
Twin Lakes WestOklahoma20Unsatisfactory12/13/20223 yrs agoRecreation1930
Pines EastOklahoma17Poor12/13/20223 yrs agoRecreation1925
Sportsmans ClubOklahoma15Poor04/02/20215 yrs agoRecreation1948
KnightOklahoma15PoorNot reportedRecreation1962

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