Risky reservoirs: Oklahoma counties where aging dams pose the greatest threat

Dee Browning // Shutterstock

- Total high-hazard dams: 15
- Number potentially dangerous: 1 (6.7%)
- Potentially dangerous dams include:
--- 1 in poor condition

#47. Adair County
Canva

- Total high-hazard dams: 10
- Number potentially dangerous: 1 (10.0%)
- Potentially dangerous dams include:
--- 1 in poor condition

#46. Latimer County
Canva

- Total high-hazard dams: 19
- Number potentially dangerous: 2 (10.5%)
- Potentially dangerous dams include:
--- 2 not rated

#45. McClain County
Canva

- Total high-hazard dams: 8
- Number potentially dangerous: 1 (12.5%)
- Potentially dangerous dams include:
--- 1 not rated

#44. Pontotoc County
Holly Cates // Shutterstock

- Total high-hazard dams: 8
- Number potentially dangerous: 1 (12.5%)
- Potentially dangerous dams include:
--- 1 in poor condition

#43. Seminole County
Canva

- Total high-hazard dams: 8
- Number potentially dangerous: 1 (12.5%)
- Potentially dangerous dams include:
--- 1 not rated

#42. Noble County
Canva

- Total high-hazard dams: 16
- Number potentially dangerous: 2 (12.5%)
- Potentially dangerous dams include:
--- 2 not rated

#41. Garvin County
Vineyard Perspective // Shutterstock

- Total high-hazard dams: 7
- Number potentially dangerous: 1 (14.3%)
- Potentially dangerous dams include:
--- 1 not rated

#40. Lincoln County
Andrey Bayda // Shutterstock

- Total high-hazard dams: 19
- Number potentially dangerous: 3 (15.8%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 2 not rated

#39. Washita County
Canva

- Total high-hazard dams: 6
- Number potentially dangerous: 1 (16.7%)
- Potentially dangerous dams include:
--- 1 not rated

#38. Beckham County
Canva

- Total high-hazard dams: 17
- Number potentially dangerous: 3 (17.6%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 not rated
--- 1 condition withheld

#37. Caddo County
Canva

- Total high-hazard dams: 5
- Number potentially dangerous: 1 (20.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#36. Custer County
Canva

- Total high-hazard dams: 5
- Number potentially dangerous: 1 (20.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#35. Pawnee County
Canva

- Total high-hazard dams: 15
- Number potentially dangerous: 3 (20.0%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 1 in poor condition
--- 1 not rated

#34. Payne County
Canva

- Total high-hazard dams: 13
- Number potentially dangerous: 3 (23.1%)
- Potentially dangerous dams include:
--- 2 in poor condition
--- 1 condition withheld

#33. Cleveland County
Canva

- Total high-hazard dams: 16
- Number potentially dangerous: 4 (25.0%)
- Potentially dangerous dams include:
--- 2 not rated
--- 2 condition withheld

#32. Sequoyah County
RaksyBH // Shutterstock

- Total high-hazard dams: 15
- Number potentially dangerous: 4 (26.7%)
- Potentially dangerous dams include:
--- 2 posing immediate threat
--- 1 in poor condition
--- 1 not rated

#31. Comanche County
Canva

- Total high-hazard dams: 7
- Number potentially dangerous: 2 (28.6%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 not rated

#30. Logan County
Sabrina Janelle Gordon // Shutterstock

- Total high-hazard dams: 10
- Number potentially dangerous: 3 (30.0%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 1 in poor condition
--- 1 condition withheld

#29. Mayes County
Canva

- Total high-hazard dams: 3
- Number potentially dangerous: 1 (33.3%)
- Potentially dangerous dams include:
--- 1 not rated

#28. Marshall County
Canva

- Total high-hazard dams: 3
- Number potentially dangerous: 1 (33.3%)
- Potentially dangerous dams include:
--- 1 in poor condition

#27. Okfuskee County
Canva

- Total high-hazard dams: 6
- Number potentially dangerous: 2 (33.3%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 not rated

#26. Pittsburg County
Canva

- Total high-hazard dams: 11
- Number potentially dangerous: 4 (36.4%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 2 not rated
--- 1 condition withheld

#25. Washington County
Canva

- Total high-hazard dams: 22
- Number potentially dangerous: 8 (36.4%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 6 in poor condition
--- 1 condition withheld

#24. Oklahoma County
Valiik30 // Shutterstock

- Total high-hazard dams: 5
- Number potentially dangerous: 2 (40.0%)
- Potentially dangerous dams include:
--- 1 not rated
--- 1 condition withheld

#23. Tulsa County
Canva

- Total high-hazard dams: 5
- Number potentially dangerous: 2 (40.0%)
- Potentially dangerous dams include:
--- 2 condition withheld

#22. McCurtain County
Canva

- Total high-hazard dams: 9
- Number potentially dangerous: 4 (44.4%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 2 in poor condition
--- 1 condition withheld

#21. Creek County
Canva

- Total high-hazard dams: 13
- Number potentially dangerous: 6 (46.2%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 2 not rated
--- 3 condition withheld

#20. Murray County
Canva

- Total high-hazard dams: 2
- Number potentially dangerous: 1 (50.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#19. Woodward County
Charles Lemar Brown // Shutterstock

- Total high-hazard dams: 2
- Number potentially dangerous: 1 (50.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#18. Jefferson County
Canva

- Total high-hazard dams: 4
- Number potentially dangerous: 2 (50.0%)
- Potentially dangerous dams include:
--- 2 condition withheld

#17. Rogers County
Canva

- Total high-hazard dams: 9
- Number potentially dangerous: 5 (55.6%)
- Potentially dangerous dams include:
--- 3 not rated
--- 2 condition withheld

#16. Le Flore County
Canva

- Total high-hazard dams: 13
- Number potentially dangerous: 8 (61.5%)
- Potentially dangerous dams include:
--- 8 condition withheld

#15. Kiowa County
Canva

- Total high-hazard dams: 8
- Number potentially dangerous: 5 (62.5%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 4 not rated

#14. Pottawatomie County
Canva

- Total high-hazard dams: 8
- Number potentially dangerous: 5 (62.5%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 3 in poor condition
--- 1 not rated

#13. Okmulgee County
RaksyBH // Shutterstock

- Total high-hazard dams: 3
- Number potentially dangerous: 2 (66.7%)
- Potentially dangerous dams include:
--- 2 condition withheld

#12. Atoka County
Moab Republic // Shutterstock

- Total high-hazard dams: 6
- Number potentially dangerous: 4 (66.7%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 3 condition withheld

#11. Bryan County
Canva

- Total high-hazard dams: 12
- Number potentially dangerous: 8 (66.7%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 1 in poor condition
--- 2 not rated
--- 4 condition withheld

#10. Osage County
Canva

- Total high-hazard dams: 10
- Number potentially dangerous: 8 (80.0%)
- Potentially dangerous dams include:
--- 8 condition withheld

#9. Wagoner County
Canva

- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#8. Ottawa County
Canva

- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#7. Texas County
RaksyBH // Shutterstock

- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#6. Choctaw County
Richard G Smith // Shutterstock

- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#5. Blaine County
Canva

- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#4. Alfalfa County
Canva

- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#3. Greer County
Canva

- Total high-hazard dams: 2
- Number potentially dangerous: 2 (100.0%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 1 condition withheld

#2. Haskell County
Canva

- Total high-hazard dams: 2
- Number potentially dangerous: 2 (100.0%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 condition withheld

This story features data reporting by Paxtyn Merten, writing by Dom DiFurio, and is part of a series utilizing data automation across 50 states.

#1. Pushmataha County
Kit Leong // Shutterstock