Flagler Reservoir Report
Nearby: Verhoeff Herman Fritzler Ec #1
Last Updated: December 5, 2025
Flagler, a dam located on the South Fork Republican River in Colorado, was completed in 1965 for recreational purposes.
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Summary
This earth dam stands at a height of 34 feet and has a total length of 1620 feet, providing a storage capacity of 3087 acre-feet. With a surface area of 157 acres and a drainage area of 137 square miles, Flagler plays a crucial role in managing water resources in the region.
The dam is regulated by the Colorado Department of Water Resources, with state oversight for permitting, inspection, and enforcement. Flagler has a spillway width of 250 feet and a maximum discharge capability of 17,000 cubic feet per second. Despite being classified as having a high hazard potential, the dam is currently in fair condition, as assessed during the last inspection in October 2020. With its strategic location and moderate risk assessment, Flagler serves as a vital infrastructure for water supply and flood control in Kit Carson County, Colorado.
As a key structure in the region, Flagler demonstrates the importance of maintaining and monitoring dams for water resource management and climate resilience. With its recreational purpose and significant storage capacity, the dam plays a critical role in supporting the local community and ecosystem. As water resource and climate enthusiasts, understanding the data and characteristics of dams like Flagler is essential for promoting sustainable water management practices and ensuring the safety and security of water infrastructure in the face of changing environmental conditions.
Year Completed |
1965 |
Dam Length |
1620 |
Dam Height |
34 |
River Or Stream |
S FORK REPUBLICAN RVR |
Primary Dam Type |
Earth |
Surface Area |
157 |
Hydraulic Height |
34 |
Drainage Area |
137 |
Nid Storage |
3087 |
Structural Height |
41 |
Hazard Potential |
High |
Nid Height |
41 |
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.
Flagler