Summary
1 is a crucial water supply infrastructure project designed by Woodward-Clyde and completed in 1998. This Earth type dam stands at an impressive height of 84 feet, with a hydraulic height of 75 feet and a structural height of 91 feet. With a storage capacity of 4041 acre-feet, it primarily serves the purpose of providing water supply to the region, ensuring a reliable source of water for the community.
Situated along Coney Creek, Twin Lakes No. 1 boasts an uncontrolled spillway with a width of 388 feet and features a slide (sluice gate) system with 4 outlet gates. The dam's hazard potential is classified as high, emphasizing the importance of regular inspections and maintenance. Despite its risk assessment indicating a moderate level of risk, Twin Lakes No. 1 meets state regulatory standards, with the State of Wyoming overseeing its permitting, inspection, and enforcement processes.
As a significant piece of water infrastructure in the region, Twin Lakes No. 1 plays a vital role in water resource management and climate resilience efforts. Its strategic location and design ensure a steady water supply for the community, contributing to the overall sustainability of water resources in Sheridan, Wyoming. With a focus on safety and efficiency, this dam stands as a testament to responsible water management practices in the face of changing environmental conditions.
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mph
Wind
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Humidity
15-Day Weather Outlook
Year Completed |
1998 |
Dam Length |
1835 |
Dam Height |
84 |
River Or Stream |
CONEY CREEK |
Primary Dam Type |
Earth |
Surface Area |
81 |
Hydraulic Height |
75 |
Drainage Area |
8.3 |
Nid Storage |
4041 |
Structural Height |
91 |
Outlet Gates |
Slide (sluice gate) - 4 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
91 |
Seasonal Comparison
5-Day Hourly Forecast Detail
Nearby Streamflow Levels
Shell Creek Above Shell Creek Reservoir
|
13cfs |
Tongue River Near Dayton
|
48cfs |
South Piney Creek At Willow Park
|
0cfs |
Shell Creek Near Shell
|
74cfs |
Rock Creek Near Buffalo
|
70cfs |
Tongue River At Monarch
|
383cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
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. Investigations and studies are necessary.
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.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams 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, environment 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.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Ranger Creek - Tongue
|
||
Big Goose Campground
|
||
Cross Creek Campground
|
||
Coffeen Park Campground
|
||
Coffeen Park
|
||
Shell Reservoir Camping Area
|
Twin Lakes No. 1
White Creek