Twiford Reservoir Report
Nearby: Glendo Dike No. 3 Glendo Dike No. 2
Last Updated: December 5, 2025
Twiford, located in Platte, Wyoming, is a privately owned irrigation dam completed in 1944 on N Bear Creek.
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Summary
The dam, primarily constructed of earth and stone with a soil foundation, stands at a height of 35 feet with a hydraulic height of 30 feet. It has a length of 325 feet and a storage capacity of 508 acre-feet, with a normal storage capacity of 285 acre-feet. The dam's spillway, with a width of 200 feet, is of the uncontrolled type.
With a low hazard potential and fair condition assessment, Twiford is regularly inspected every five years, with the last assessment conducted in June 2019. While the dam's risk assessment is moderate, it meets regulatory guidelines and has not undergone significant modifications in recent years. The surrounding area is at a moderate risk level (3) in terms of potential hazards associated with the dam. Overall, Twiford serves as a vital infrastructure for irrigation purposes in the region, ensuring water resource management and agricultural sustainability in the area.
Year Completed |
1944 |
Dam Length |
325 |
Dam Height |
35 |
River Or Stream |
N BEAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
30 |
Nid Storage |
508 |
Structural Height |
35 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
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.
Twiford