Diablo
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Washington |
| County | Whatcom |
| Nearest City | Newhalem/Diablo |
| River/Stream | Skagit River |
| Coordinates | 48.71340, -121.13180 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 389 ft |
| Dam Height | 389 ft |
| Dam Length | 1,180 ft |
| Year Completed | 1929 (97 years old) |
Storage & Hydraulics
| NID Storage | 89,200 acre-ft |
| Max Storage | 89,200 acre-ft |
| Normal Storage | 50,000 acre-ft |
| Surface Area | 770 acres |
| Drainage Area | 1,160 sq mi |
| Max Discharge | 105,300 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | City of Seattle |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/16/2022 |
| Emergency Action Plan | Yes |