Stoney Mountain dam
Stoney Mountain
Stoney Mountain is a dam located in Yamhill, Oregon, with a primary purpose of providing fire protection, stock watering, and serving as a small fish pond. With a storage capacity of 184 acre-feet, this dam plays a crucial role in ensuring water availability for various uses in the region. Additionally, Stoney Mountain is regulated by the Oregon Water Resources Department and undergoes regular inspections to ensure its structural integrity and safety.
Owned by the local government, Stoney Mountain has a low hazard potential and has not been rated for its condition assessment. The dam features a slide (sluice gate) outlet gate and is located in a picturesque setting with a height of 77 feet. While the dam was completed at an unspecified date, it continues to serve as a vital water resource for the community. With its location in the Portland District and under state jurisdiction, Stoney Mountain stands as a testament to the importance of sustainable water management practices in the face of changing climate conditions.
Overall, Stoney Mountain represents a key infrastructure for water resource management in Oregon, providing essential services for fire protection, stock watering, and recreational activities. As a regulated structure with state permitting, inspection, and enforcement measures in place, the dam ensures the safety and security of the surrounding area. With its serene surroundings and vital function, Stoney Mountain serves as a reminder of the critical role that water resources play in supporting ecosystems and communities in the face of evolving climate challenges.
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 Stoney Mountain -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Tucca Creek Near Blaine | 10 cfs | → |
| South Yamhill River At Mcminnville | 310 cfs | → |
| Nestucca River Near Beaver | 431 cfs | → |
| Trask River Above Cedar Creek | 501 cfs | → |
| Wilson River Near Tillamook | 613 cfs | → |
| Tualatin River Near Dilley | 123 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Stoney Mountain.
Boat launches
Campgrounds
- Fan Creek Campground
- Elk Bend Campground
- Alder Glen Campground
- Dovre Campground
- Rocky Bend
- Rocky Bend Campground
Track Stoney Mountain 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 Stoney Mountain
Where does the data for Stoney Mountain 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 Stoney Mountain.