Stemilt Saddle Dam
Stemilt Saddle Dam is an earth dam located in Chelan County, Washington, built in 1962. It carries a High hazard potential classification and has a fair condition assessment.
About Stemilt Saddle Dam
The primary purpose of Stemilt Saddle Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Lower Stemilt Irrigation District (public utility). It impounds the Orr Creek-offstream near Malaga.
The dam stands 9 feet tall and stretches 210 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 200 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1962, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 04/22/2025.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Washington dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Washington |
| County | Chelan |
| Nearest City | Malaga |
| River/Stream | Orr Creek-offstream |
| Coordinates | 47.31095, -120.31144 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Length | 210 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 100 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 20 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Lower Stemilt Irrigation District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 04/22/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA00363 |
| Federal ID | WA00363 |
| More Info | State Dam Safety Program |