Risky reservoirs: California counties where aging dams pose the greatest threat
- Total high-hazard dams: 35
- Number potentially dangerous: 1 (2.9%)
- Potentially dangerous dams include:
--- 1 condition withheld
- Total high-hazard dams: 36
- Number potentially dangerous: 2 (5.6%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 condition withheld
- Total high-hazard dams: 12
- Number potentially dangerous: 1 (8.3%)
- Potentially dangerous dams include:
--- 1 in poor condition
- Total high-hazard dams: 24
- Number potentially dangerous: 2 (8.3%)
- Potentially dangerous dams include:
--- 2 condition withheld
- Total high-hazard dams: 44
- Number potentially dangerous: 4 (9.1%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 3 in poor condition
- Total high-hazard dams: 10
- Number potentially dangerous: 1 (10.0%)
- Potentially dangerous dams include:
--- 1 condition withheld
- Total high-hazard dams: 26
- Number potentially dangerous: 3 (11.5%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 2 condition withheld
- Total high-hazard dams: 15
- Number potentially dangerous: 2 (13.3%)
- Potentially dangerous dams include:
--- 2 condition withheld
- Total high-hazard dams: 37
- Number potentially dangerous: 5 (13.5%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 4 condition withheld
- Total high-hazard dams: 14
- Number potentially dangerous: 2 (14.3%)
- Potentially dangerous dams include:
--- 2 in poor condition
- Total high-hazard dams: 14
- Number potentially dangerous: 2 (14.3%)
- Potentially dangerous dams include:
--- 2 condition withheld
- Total high-hazard dams: 45
- Number potentially dangerous: 7 (15.6%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 not rated
--- 5 condition withheld
- Total high-hazard dams: 36
- Number potentially dangerous: 6 (16.7%)
- Potentially dangerous dams include:
--- 1 not rated
--- 5 condition withheld
- Total high-hazard dams: 81
- Number potentially dangerous: 14 (17.3%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 13 condition withheld
- Total high-hazard dams: 10
- Number potentially dangerous: 2 (20.0%)
- Potentially dangerous dams include:
--- 2 condition withheld
- Total high-hazard dams: 15
- Number potentially dangerous: 4 (26.7%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 3 condition withheld
- Total high-hazard dams: 11
- Number potentially dangerous: 3 (27.3%)
- Potentially dangerous dams include:
--- 3 condition withheld
- Total high-hazard dams: 9
- Number potentially dangerous: 3 (33.3%)
- Potentially dangerous dams include:
--- 1 posing immediate threat
--- 2 condition withheld
- Total high-hazard dams: 20
- Number potentially dangerous: 7 (35.0%)
- Potentially dangerous dams include:
--- 7 condition withheld
- Total high-hazard dams: 5
- Number potentially dangerous: 2 (40.0%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 condition withheld
- Total high-hazard dams: 14
- Number potentially dangerous: 6 (42.9%)
- Potentially dangerous dams include:
--- 6 condition withheld
- Total high-hazard dams: 20
- Number potentially dangerous: 9 (45.0%)
- Potentially dangerous dams include:
--- 9 condition withheld
- Total high-hazard dams: 6
- Number potentially dangerous: 3 (50.0%)
- Potentially dangerous dams include:
--- 3 condition withheld
- Total high-hazard dams: 6
- Number potentially dangerous: 3 (50.0%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 2 condition withheld
- Total high-hazard dams: 26
- Number potentially dangerous: 13 (50.0%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 12 condition withheld
- Total high-hazard dams: 15
- Number potentially dangerous: 8 (53.3%)
- Potentially dangerous dams include:
--- 8 condition withheld
- Total high-hazard dams: 9
- Number potentially dangerous: 5 (55.6%)
- Potentially dangerous dams include:
--- 5 condition withheld
- Total high-hazard dams: 16
- Number potentially dangerous: 9 (56.3%)
- Potentially dangerous dams include:
--- 1 not rated
--- 8 condition withheld
- Total high-hazard dams: 12
- Number potentially dangerous: 7 (58.3%)
- Potentially dangerous dams include:
--- 7 condition withheld
- Total high-hazard dams: 5
- Number potentially dangerous: 3 (60.0%)
- Potentially dangerous dams include:
--- 3 condition withheld
- Total high-hazard dams: 24
- Number potentially dangerous: 15 (62.5%)
- Potentially dangerous dams include:
--- 1 not rated
--- 14 condition withheld
- Total high-hazard dams: 14
- Number potentially dangerous: 9 (64.3%)
- Potentially dangerous dams include:
--- 9 condition withheld
- Total high-hazard dams: 3
- Number potentially dangerous: 2 (66.7%)
- Potentially dangerous dams include:
--- 2 condition withheld
- Total high-hazard dams: 3
- Number potentially dangerous: 2 (66.7%)
- Potentially dangerous dams include:
--- 2 condition withheld
- Total high-hazard dams: 27
- Number potentially dangerous: 18 (66.7%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 not rated
--- 16 condition withheld
- Total high-hazard dams: 17
- Number potentially dangerous: 12 (70.6%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 11 condition withheld
- Total high-hazard dams: 11
- Number potentially dangerous: 8 (72.7%)
- Potentially dangerous dams include:
--- 8 condition withheld
- Total high-hazard dams: 4
- Number potentially dangerous: 3 (75.0%)
- Potentially dangerous dams include:
--- 1 not rated
--- 2 condition withheld
- Total high-hazard dams: 8
- Number potentially dangerous: 6 (75.0%)
- Potentially dangerous dams include:
--- 6 condition withheld
- Total high-hazard dams: 24
- Number potentially dangerous: 18 (75.0%)
- Potentially dangerous dams include:
--- 1 in poor condition
--- 1 not rated
--- 16 condition withheld
- Total high-hazard dams: 26
- Number potentially dangerous: 20 (76.9%)
- Potentially dangerous dams include:
--- 20 condition withheld
- Total high-hazard dams: 5
- Number potentially dangerous: 4 (80.0%)
- Potentially dangerous dams include:
--- 4 condition withheld
- Total high-hazard dams: 10
- Number potentially dangerous: 8 (80.0%)
- Potentially dangerous dams include:
--- 8 condition withheld
- Total high-hazard dams: 6
- Number potentially dangerous: 5 (83.3%)
- Potentially dangerous dams include:
--- 5 condition withheld
- Total high-hazard dams: 6
- Number potentially dangerous: 5 (83.3%)
- Potentially dangerous dams include:
--- 5 condition withheld
- Total high-hazard dams: 7
- Number potentially dangerous: 6 (85.7%)
- Potentially dangerous dams include:
--- 6 condition withheld
- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 in poor condition
- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 1 condition withheld
- Total high-hazard dams: 1
- Number potentially dangerous: 1 (100.0%)
- Potentially dangerous dams include:
--- 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.