Summary
1, also known as Wheatland No. 1, is a privately owned irrigation structure located in Platte, Wyoming. This earth dam, designed by J A COLE and completed in 1960, serves the primary purpose of irrigation and stands at a height of 45 feet, with a storage capacity of 11,590 acre-feet. The dam spans 6,600 feet in length and is situated on Sybille Creek offstream, with a controlled spillway width of 4 feet.
The dam's significant hazard potential and fair condition assessment have prompted inspections every 5 years, with the last assessment conducted in May 2017. While the risk assessment indicates a very high risk level, the dam's emergency action plan status and risk management measures are currently unspecified. With Liz Cheney (R) representing Congressional District 00, Wyoming, the Wyoming Development Company No. 1 plays a crucial role in water resource management and climate resilience efforts in the region.
Overall, Wyoming Development Company No. 1 stands as a key infrastructure for irrigation in the area, highlighting the importance of maintaining and monitoring such structures for the safety and sustainability of water resources. The dam's location, design, and operational status demonstrate the intricate balance between human development and environmental conservation, making it a focal point in the efforts to address water security and climate challenges in Wyoming.
Year Completed |
1960 |
Dam Length |
6600 |
Dam Height |
45 |
River Or Stream |
SYBILLE CREEK OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
424 |
Hydraulic Height |
38 |
Drainage Area |
1.5 |
Nid Storage |
11590 |
Structural Height |
49 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
49 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Wyoming Development Company No. 1