Ione Mill Pond dam
Ione Mill Pond
Ione Mill Pond is a picturesque water resource located in Ione, Washington, along Big Muddy Creek. Built in 1914, this earth dam serves primarily for recreational purposes, offering a serene setting for outdoor activities such as fishing, boating, and wildlife observation. With a storage capacity of 557 acre-feet and a surface area of 37.2 acres, the pond provides a tranquil escape for visitors seeking to immerse themselves in nature.
Managed by the Washington Department of Ecology, Ione Mill Pond is regulated, inspected, and enforced to ensure its safety and environmental impact. The dam stands at a hydraulic height of 35 feet and a structural height of 21 feet, with a length of 1050 feet. While categorized as having a low hazard potential, the dam's condition is currently unrated. Despite this, the pond's serene setting and recreational opportunities make it a popular destination for water resource and climate enthusiasts in Pend Oreille County, Washington.
With its rich history dating back over a century, Ione Mill Pond continues to be a beloved destination for those seeking outdoor recreation and natural beauty in the Pacific Northwest. Its tranquil waters and surrounding wildlife offer a peaceful escape for visitors looking to connect with nature and enjoy the benefits of this man-made reservoir. As climate change continues to impact water resources, the management and conservation of places like Ione Mill Pond are crucial for maintaining the balance of ecosystems and providing sustainable recreational opportunities for future generations.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Ione Mill Pond -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pend Oreille River Below Box Canyon Near Ione | 21,400 cfs | → |
| Outlet Creek Near Metaline Falls | 19 cfs | → |
| Columbia River At International Boundary | 102,000 cfs | → |
| Priest R Outflow Nr Coolin | 213 cfs | → |
| Colville River At Kettle Falls | 60 cfs | → |
| Kettle River Near Laurier | 890 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Ione Mill Pond.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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More reservoirs
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About Ione Mill Pond
Where does the data for Ione Mill Pond come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card below for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.