Pinery Reservoir Report

Last Updated: December 5, 2025

Pinery, also known as Bingham, is a significant Earth type dam located in Parker, Colorado.


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Summary

Completed in 1970, it serves as a vital water supply source for the region, with a maximum storage capacity of 440 acre-feet and a normal storage capacity of 315 acre-feet. The dam stands at a height of 68 feet, with a hydraulic height of 65 feet, and a structural height of 70 feet, providing crucial water resources for the surrounding area.

Managed by the local government and regulated by the Colorado Department of Water Resources, Pinery Dam plays a critical role in water supply and recreation in the region. With a drainage area of 1 square mile and a spillway width of 150 feet, the dam has a significant hazard potential but is currently assessed to be in satisfactory condition. The last inspection in August 2020 confirmed its structural integrity, ensuring its continued operation and contribution to water resource management in Douglas County, Colorado.

Situated on Cherry Creek, Pinery Dam not only supports water supply needs but also offers recreational opportunities for the community. With its strategic location and high-risk assessment, the dam remains a key asset in the region's water infrastructure, highlighting the importance of effective management and maintenance to ensure its continued reliability and safety for both water resource and climate enthusiasts.

Year Completed

1970

Dam Length

1165

Dam Height

68

River Or Stream

CHERRY CREEK

Primary Dam Type

Earth

Surface Area

25

Hydraulic Height

65

Drainage Area

1

Nid Storage

440

Structural Height

70

Hazard Potential

Significant

Nid Height

70
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.