Polaris Reservoir Report
Nearby: Gleason Reservoir No. 2 Clear Creek
Last Updated: February 22, 2026
Polaris, also known as the Enl of 994r, is a private irrigation dam located in Laramie, Wyoming, near Timnath, Colorado.
Summary
Built in 1909, this Earth-type dam stands at a height of 41 feet and has a structural height of 51 feet, with a length of 1071 feet. The dam has a storage capacity of 687 acre-feet and serves the primary purpose of irrigation for the surrounding area.
Despite its historical significance, Polaris is facing challenges with its condition assessment rated as poor and a significant hazard potential. The last inspection in 2017 raised concerns about the dam's safety and highlighted the need for regular maintenance and improvement measures. With a high risk assessment rating of 2, there is a pressing need for risk management measures to mitigate potential issues and ensure the safety of the surrounding community and environment.
As a critical infrastructure in the area, Polaris plays a crucial role in water resource management and agricultural activities. However, its deteriorating condition and high-risk profile underscore the importance of proactive maintenance and safety measures to prevent potential disasters and ensure the long-term sustainability of the dam and its operations. Climate and water resource enthusiasts should closely monitor developments at Polaris to support efforts towards its rehabilitation and safety enhancement.
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15-Day Weather Outlook
Year Completed |
1909 |
Dam Length |
1071 |
Dam Height |
41 |
River Or Stream |
LONE TREE CREEK OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
57 |
Hydraulic Height |
39 |
Drainage Area |
2 |
Nid Storage |
687 |
Structural Height |
51 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
51 |
Seasonal Comparison
5-Day Hourly Forecast Detail
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.
Polaris