Clearwater No 1 Forebay dam
Clearwater No 1 Forebay
Clearwater No 1 Forebay is a privately owned hydroelectric facility located in Douglas County, Oregon. Built in 1953, this earth dam structure stands at 17 feet high and spans 4200 feet in length, with a storage capacity of 182 acre-feet. The dam serves the primary purpose of generating hydroelectric power and is regulated by the Federal Energy Regulatory Commission.
The Clearwater No 1 Forebay features an uncontrolled spillway with a width of 106 feet and has been assessed with a low hazard potential. Although the condition assessment is currently not available, the facility's risk assessment is rated as moderate. The emergency action plan for the dam was prepared in 2020, meeting guidelines and ensuring safety measures in case of an emergency.
Overall, Clearwater No 1 Forebay provides a vital source of renewable energy while maintaining a low hazard potential and moderate risk assessment. Water resource and climate enthusiasts can appreciate the engineering and operational aspects of this hydroelectric facility in Oregon, managed by a private entity with oversight from the Federal Energy Regulatory Commission.
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 Clearwater No 1 Forebay -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Clearwater R Blw Mowich Creek | 69 cfs | → |
| Clearwater R Ab Trap Cr Nr T Falls | 69 cfs | → |
| North Umpqua River At Toketee Falls Oreg. | 68 cfs | → |
| Fish Creek Abv Slipper Creek Nr Toketee Falls | 79 cfs | → |
| N.Umpqua R Blw Slide Ck Dam Nr Toketee Falls | 260 cfs | → |
| N.Umpqua R Blw Warm Springs Ck Nr Toketee Falls | 80 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Clearwater No 1 Forebay.
Boat launches
- Toketee Reservoir
- East Lemolo
- Thielsen View
- North End Boat Ramp
- North End Boating Site (Diamond Lake)
- Boulder Flat
Campgrounds
- Clearwater #1 Forbay Forest Camp
- Whitehorse Falls Campground
- Whitehorse Falls
- Briggs Camp
- Watson Creek Forest Camp
- Clearwater #2 Forest Camp
Fishing spots
Paddle runs
- Lemolo Lake To Oregon Cacades Recreation Area Boundary
- Headwaters To Boulder Creek Wilderness Boundary
- Oregon Cascades Recreation Area Boundary To Mt. Thielsen Wilderness Boundary
- Headwaters To Rogue-Umpqua Wilderness Boundary
- Mt. Thielsen Wilderness Boundary To Maidu Lake
- Rogue-Umpqua Wilderness Boundary To Confluence With North Fork Rogue River
Track Clearwater No 1 Forebay 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 Clearwater No 1 Forebay
Where does the data for Clearwater No 1 Forebay 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 Clearwater No 1 Forebay.