Eagle Rock Reservoir Report
Nearby: Adams & Bunker #1 Adams & Bunker #3
Last Updated: December 5, 2025
Eagle Rock is a privately owned dam located in Weld County, Colorado, along the Simpson Creek-TR river.
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Summary
Built in 1968, this Earth dam stands at a height of 27 feet and spans 680 feet in length. The primary purpose of Eagle Rock is for recreation, with secondary purposes including irrigation. The dam has a storage capacity of 83 acre-feet and covers a surface area of 9 acres.
Despite its low hazard potential, Eagle Rock poses a high risk due to its condition assessment being "Not Rated." It is regulated by the Colorado Division of Water Resources (DWR) and undergoes regular inspections every 6 years. The dam does not have a spillway and is not equipped with outlet gates. While it currently does not have an Emergency Action Plan (EAP) in place, it meets regulatory guidelines for state permitting, inspection, and enforcement.
Water resource and climate enthusiasts will find Eagle Rock to be an intriguing structure to study, given its location in a region susceptible to climate variability and water resource management challenges. The dam's historical significance, combined with its recreational and irrigation purposes, make it a valuable piece of infrastructure to monitor and assess in the context of changing environmental conditions and water usage demands in the area.
Year Completed |
1968 |
Dam Length |
680 |
Dam Height |
15 |
River Or Stream |
SIMPSON CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
17 |
Drainage Area |
36 |
Nid Storage |
83 |
Structural Height |
27 |
Hazard Potential |
Low |
Nid Height |
27 |
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.
Eagle Rock