Lostine Reservoir dam
Lostine Reservoir
Lostine Reservoir, nestled in the picturesque Wallowa County of Oregon, is a private-owned water resource known for its recreational offerings. Completed in 1970, this earth dam structure rises to a height of 14 feet, creating a reservoir with a storage capacity of 540 acre-feet and a surface area of 90 acres. The reservoir is fed by the Lostine River and serves as a popular spot for outdoor enthusiasts seeking activities such as fishing, boating, and picnicking.
Managed by the Oregon Water Resources Department and subject to state regulations, Lostine Reservoir boasts a low hazard potential and a needle outlet gate. Despite its age, the dam's condition is not rated, with the last inspection conducted in April 2018. With its tranquil waters and scenic surroundings, Lostine Reservoir continues to draw visitors seeking a peaceful escape in the heart of nature. As climate change impacts water resources, this reservoir stands as a reminder of the importance of sustainable management and conservation efforts in safeguarding our precious natural resources for future generations.
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 Lostine Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Minam River Near Minam | 818 cfs | → |
| Imnaha River At Imnaha | 150 cfs | → |
| Grande Ronde River At Troy | 2,170 cfs | → |
| Snake River At Hells Canyon Dam Id-Or State Line | 19,200 cfs | → |
| Snake River Bl Mcduff Rapids At China Gardens | 33,900 cfs | → |
| Umatilla River Above Meacham Creek | 91 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lostine Reservoir.
Boat launches
- Wallowa Lake County Park
- Wallowa Lake State Park
- Minam State Recreation Area
- Palmer Junction Boat Launch
Campgrounds
- Canyon Forest Campground
- Williamson Campground
- Williamson
- Bear Creek Campground
- Walla Walla Forest Camp
- Hurricane Creek Campground
Paddle runs
- Headwaters To Eagle Cap Wilderness Boundary
- Eagle Cap Wilderness Boundary To Confluence With Eagle Crek
- Joseph Creek
- Hells Canyon (Hells Canyon Dam To Pittsburg Landing)
- Headwaters (Just North Of Confluence Of Mf Five Points Creek) To Wallowa-Whitman Nf Boundary
- Grande Ronde River (Lower)
Track Lostine Reservoir 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 Lostine Reservoir
Where does the data for Lostine Reservoir 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 Lostine Reservoir.