Bonaparte Lake Dam dam
Bonaparte Lake Dam
Bonaparte Lake Dam, located in Okanogan, Washington, was completed in 1957 and serves primarily for recreational purposes. The dam, standing at a height of 9 feet with a length of 180 feet, holds a maximum storage capacity of 995 acre-feet and a normal storage capacity of 535 acre-feet. Situated on Bonaparte Creek, the dam is regulated by the Washington Department of Ecology and undergoes periodic inspections to ensure its safety and compliance with state regulations.
Although classified as having a low hazard potential, the condition assessment of Bonaparte Lake Dam is currently not rated. The last recorded inspection took place in June 1971, highlighting the need for updated evaluations to determine the dam's current state. Despite its age, the dam remains in operation and continues to provide essential irrigation and recreational benefits to the surrounding area. With its stone core and soil foundation, Bonaparte Lake Dam stands as a testament to the engineering prowess of its time.
As a significant feature within Congressional District 04, Washington, Bonaparte Lake Dam falls under the jurisdiction of Dan Newhouse (R) and the Seattle District of the US Army Corps of Engineers. Given its location and historical significance, the dam attracts water resource and climate enthusiasts seeking to explore the intersection of human intervention and natural ecosystems. With its tranquil surroundings and vital role in water management, Bonaparte Lake Dam serves as a focal point for understanding the delicate balance between environmental conservation and human development.
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.
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 Bonaparte Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Kettle River Near Ferry | 2,540 cfs | → |
| Okanogan River At Oroville | 164 cfs | → |
| Okanogan River Near Tonasket | 5,120 cfs | → |
| Similkameen River Near Nighthawk | 4,950 cfs | → |
| Omak Creek Near Omak | 3 cfs | → |
| Kettle River Near Laurier | 4,520 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Bonaparte Lake Dam.
Boat launches
- Southwest Bonaparte Lake Road, Tonasket
- Long Lake Lane 23, Tonasket
- Wayland Cove Road, Republic
- Loomis-Oroville Road 322, Tonasket
- Deep Bay Road 98, Oroville
- Windy Flat Road Okanogan County
Campgrounds
- Bonaparte Lake Campground
- Bonaparte Lake
- Beth Lake
- Beth Lake Campground
- Long Lake (Tonasket) - Wdfw
- Round Lake - Wdfw
Track Bonaparte Lake Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Bonaparte Lake Dam
Where does the data for Bonaparte Lake Dam 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 above 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.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Bonaparte Lake Dam.