Twin Lakes Bor dam
Twin Lakes Bor
Twin Lakes Bor is a Federal-owned hydroelectric facility located in the picturesque city of Granite, Colorado. Managed by the Bureau of Reclamation, this Earth dam stands at a height of 55 feet and was completed in 1948. Its primary purpose is hydroelectric power generation, with additional functions including irrigation, recreation, and water supply for the surrounding area.
With a storage capacity of 147,500 acre-feet and a surface area of 2,805 acres, Twin Lakes Bor plays a crucial role in water resource management in the region. The dam regulates the flow of Lake Creek and provides essential water supply for various purposes. Despite its high hazard potential and the need for regular inspections, the facility meets state regulatory standards and ensures public safety.
Surrounded by stunning natural landscapes, Twin Lakes Bor offers a unique blend of environmental conservation and sustainable energy production. As a key player in the water infrastructure of Colorado, this facility serves as a testament to the importance of balancing water resource management with the preservation of natural habitats in the face of changing climate conditions.
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 Twin Lakes Bor -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Arkansas River At Granite | 126 cfs | → |
| Clear Creek Above Clear Creek Reservoir | 82 cfs | → |
| Lake Creek Above Twin Lakes Reservoir | 162 cfs | → |
| Arkansas River Below Empire Gulch Near Malta | 100 cfs | → |
| Arkansas River Below Granite | 291 cfs | → |
| Halfmoon Creek Near Malta | 48 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Twin Lakes Bor.
⚓ Boat launches
- Dexter Point Boating Site
- Red Rooster Boating Site
- Cr 390 Chaffee County
- Ahra - Number 4 Rec Site
- Matchless Boating Site
- Turquoise Lake Trail Lake County
⛺ Campgrounds
More campgrounds →🎣 Fishing spots
- Sunnyside Fishing Site
- Whistler Point
- Big Mac Fishing Site
- Deception Point Fishing Site
- Mount Elbert Forebay
- Moache Fishing Site
Track Twin Lakes Bor 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 Twin Lakes Bor
Where does the data for Twin Lakes Bor 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 Twin Lakes Bor.