Ione Mill Pond is an earth dam located in Pend Oreille County, Washington, built in 1914. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 1,050 ft long, taller than 80% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Ione Mill Pond
The primary purpose of Ione Mill Pond is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Vaagen Brothers Lumber (private). It impounds the Big Muddy Creek near Ione.
The dam stands 35 feet tall and stretches 1,050 feet across, creates a reservoir covering 37 acres, has a maximum storage capacity of 557 acre-feet, and collects water from a drainage area of 28 square miles. Completed in 1914, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Washington |
| County | Pend Oreille |
| Nearest City | Ione |
| River/Stream | Big Muddy Creek |
| Coordinates | 48.73791, -117.41535 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Length | 1,050 ft |
| Year Completed | 1914 (112 years old) |
Storage & Hydraulics
| NID Storage | 557 acre-ft |
| Max Storage | 557 acre-ft |
| Normal Storage | 500 acre-ft |
| Surface Area | 37 acres |
| Drainage Area | 28 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Vaagen Brothers Lumber |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00333 |
| Federal ID | WA00333 |
| More Info | State Dam Safety Program |