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

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- Total high-hazard dams: 9
- Number potentially dangerous: 1 (11.1%)
- Potentially dangerous dams include:
--- 1 condition withheld

#28. Clackamas County
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- Total high-hazard dams: 7
- Number potentially dangerous: 1 (14.3%)
- Potentially dangerous dams include:
--- 1 condition withheld

#27. Multnomah County
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- Total high-hazard dams: 4
- Number potentially dangerous: 1 (25.0%)
- Potentially dangerous dams include:
--- 1 in poor condition

#26. Clatsop County
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- Total high-hazard dams: 16
- Number potentially dangerous: 5 (31.3%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 2 in poor condition
--- 2 condition withheld

#25. Douglas County
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- Total high-hazard dams: 3
- Number potentially dangerous: 1 (33.3%)
- Potentially dangerous dams include:
--- 1 condition withheld

#24. Washington County
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- Total high-hazard dams: 3
- Number potentially dangerous: 1 (33.3%)
- Potentially dangerous dams include:
--- 1 condition withheld

#23. Marion County
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- Total high-hazard dams: 9
- Number potentially dangerous: 3 (33.3%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 2 condition withheld

#22. Wasco County
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- Total high-hazard dams: 5
- Number potentially dangerous: 2 (40.0%)
- Potentially dangerous dams include:
--- 2 posing immediate threat

#21. Lincoln County
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- Total high-hazard dams: 5
- Number potentially dangerous: 2 (40.0%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 condition withheld

#20. Jefferson County
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- Total high-hazard dams: 2
- Number potentially dangerous: 1 (50.0%)
- Potentially dangerous dams include:
--- 1 posing immediate threat

#19. Josephine County
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- Total high-hazard dams: 2
- Number potentially dangerous: 1 (50.0%)
- Potentially dangerous dams include:
--- 1 in poor condition

#18. Polk County
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- Total high-hazard dams: 2
- Number potentially dangerous: 1 (50.0%)
- Potentially dangerous dams include:
--- 1 in poor condition

#17. Coos County
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- Total high-hazard dams: 4
- Number potentially dangerous: 2 (50.0%)
- Potentially dangerous dams include:
--- 2 condition withheld

#16. Klamath County
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- Total high-hazard dams: 5
- Number potentially dangerous: 3 (60.0%)
- Potentially dangerous dams include:
--- 3 condition withheld

#15. Deschutes County
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- Total high-hazard dams: 5
- Number potentially dangerous: 3 (60.0%)
- Potentially dangerous dams include:
--- 2 in poor condition
--- 1 condition withheld

#14. Union County
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- Total high-hazard dams: 5
- Number potentially dangerous: 3 (60.0%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 2 condition withheld

#13. Crook County
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- Total high-hazard dams: 3
- Number potentially dangerous: 2 (66.7%)
- Potentially dangerous dams include:
--- 2 condition withheld

#12. Baker County
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- Total high-hazard dams: 7
- Number potentially dangerous: 5 (71.4%)
- Potentially dangerous dams include:
--- 2 posing immediate threat
--- 3 condition withheld

#11. Linn County
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- Total high-hazard dams: 14
- Number potentially dangerous: 10 (71.4%)
- Potentially dangerous dams include:
--- 10 condition withheld

#10. Lane County
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- Total high-hazard dams: 21
- Number potentially dangerous: 15 (71.4%)
- Potentially dangerous dams include:
--- 2 posing immediate threat
--- 3 in poor condition
--- 10 condition withheld

#9. Jackson County
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- Total high-hazard dams: 10
- Number potentially dangerous: 8 (80.0%)
- Potentially dangerous dams include:
--- 2 posing immediate threat
--- 2 in poor condition
--- 4 condition withheld

#8. Malheur County
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- Total high-hazard dams: 10
- Number potentially dangerous: 9 (90.0%)
- Potentially dangerous dams include:
--- 9 condition withheld

#7. Benton County
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- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 posing immediate threat

#6. Hood River County
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- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 posing immediate threat

#5. Curry County
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- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 condition withheld

#4. Morrow County
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- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 not rated

#3. Grant County
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- Total high-hazard dams: 2
- Number potentially dangerous: 2 (100.0%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 not rated

#2. Wallowa County
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- Total high-hazard dams: 3
- Number potentially dangerous: 3 (100.0%)
- Potentially dangerous dams include:
--- 3 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. Umatilla County
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