Klonaqua Lake Dam dam
Klonaqua Lake Dam
Klonaqua Lake Dam, located in Leavenworth, Washington, was completed in 1933 and is owned by a public utility. The dam serves primarily for irrigation purposes, with additional benefits for recreation. It is a rockfill dam standing at a hydraulic height of 35.1 feet and a structural height of 19.3 feet, with a normal storage capacity of 1171.7 acre-feet and a maximum storage of 1223 acre-feet. The dam is situated on Tr-French Creek and falls under the regulatory oversight of the Washington Dept of Ecology, ensuring its compliance with state regulations and permitting requirements.
Despite its historical significance and vital role in water resource management, Klonaqua Lake Dam poses a high hazard potential and has been assessed as being in poor condition. The last inspection in August 2018 revealed the need for improvements to enhance the dam's safety and stability. The emergency action plan (EAP) for the dam was last updated in June 2021, indicating ongoing efforts to address potential risks and ensure preparedness for emergencies. With a drainage area of 0.77 square miles and a surface area of 62 acres, the dam's significance extends beyond irrigation to include environmental and recreational considerations.
As a key structure in the region's water infrastructure, Klonaqua Lake Dam plays a crucial role in water supply management and agricultural activities. Its association with Tr-French Creek and its location within the scenic landscape of Chelan County, Washington, make it a focal point for water resource and climate enthusiasts. The dam's historical legacy, combined with its current operational challenges and the need for maintenance and risk management measures, highlight the complex interplay between human development and environmental stewardship in the context of water resource management.
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 Klonaqua Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Icicle Creek Above Snow Creek Near Leavenworth | 807 cfs | → |
| Wenatchee River At Peshastin | 4,110 cfs | → |
| Wenatchee River At Plain | 2,900 cfs | → |
| Chiwawa River Near Plain | 864 cfs | → |
| South Fork Tolt River Near Index | 31 cfs | → |
| Sf Snoqualmie River Ab Alice Creek Near Garcia | 233 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Klonaqua Lake Dam.
Boat launches
- Cooper Lake Boat Launch
- Leavenworth Public Boat Launch
- Bakers Lane, Easton
- Salmon La Sac Road, Ronald
- Keechelus Lake Boat Launch
- Lake Cabins Road Kittitas County
Campgrounds
- Rock Island
- Rock Island Campground
- Trout Lake Creek
- Waptus Lake Camp
- Chatter Creek Campground
- Chatter Creek
Paddle runs
- Alpine Lakes Wilderness Boundary To Confluence With Tye River
- Headwaters In Nw1/4 Of Sec 12, T24n, R13e To Alpine Lakes Wilderness Boundary
- Headwaters At Josephine Lake To Alpine Lakes Wilderness Boundary
- Alpine Lakes Wilderness Boundary To Private Land Boundary At North Section Line Of Sec 3, T23n, R14e
- Rock Island Campground To Ida Creek
- Headwaters At Outlet Of Trico Lake In Sw 1/4 Of Sec 5 T24n, R14e To Alpine Lakes Wilderness Boundary
Track Klonaqua 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 Klonaqua Lake Dam
Where does the data for Klonaqua 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 High 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 Klonaqua Lake Dam.