Mill Creek Storage Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Washington |
| County | Walla Walla |
| Nearest City | WALLA WALLA |
| River/Stream | MILL CREEK OFFSTREAM |
| Coordinates | 46.06418, -118.26380 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 145 ft |
| Dam Length | 3,200 ft |
| Year Completed | 1942 (84 years old) |
Storage & Hydraulics
| NID Storage | 8,300 acre-ft |
| Max Storage | 8,300 acre-ft |
| Normal Storage | 3,300 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 80 sq mi |
| Max Discharge | 17,000 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USACE - Walla Walla District |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 10/20/2022 |
| Emergency Action Plan | Yes |