Washington
For Washington, hazard classification is High; classification criteria is located in areas where dam failure poses a risk for loss of life; inspection frequency is every five years; mandatory is yes; inspector qualification is dam safety engineers, recorded from its source on 2026-08-18.
- State
- Washington verified
- Hazard classification
- High verified
- Classification criteria
- located in areas where dam failure poses a risk for loss of life verified
- Inspection frequency
- every five years verified
- Mandatory
- yes our reading
- Inspector qualification
- dam safety engineers verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
Periodic inspections are conducted on existing "significant hazard" or "high hazard" dams — those located in areas where dam failure poses a risk for loss of life. The inspections are intended to identify deficiencies and to reasonably assure safe operation and confirm that maintenance is being adequately performed. Our dam safety engineers perform these inspections every five years.
— ecology.wa.gov, retrieved 2026-08-18
Source
- ecology.wa.govhttps://ecology.wa.gov/water-shorelines/water-supply/dams/info-for-dam-owners/inspections