Pine Cone No. 2 Reservoir Report

Last Updated: December 19, 2025

Pine Cone No.


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Summary

2, located in Carbon, Wyoming, is a privately owned Earth dam constructed in 1977 for irrigation purposes along the Jack Daniels Draw. With a height of 39 feet and a length of 1650 feet, this dam provides a storage capacity of 186 acre-feet, serving as a crucial water resource in the region. Despite its poor condition assessment and low hazard potential, the dam has a moderate risk level, highlighting the need for ongoing maintenance and risk management measures to ensure its safety and functionality.

Managed by the Wyoming State Engineer's Office, Pine Cone No. 2 is subject to state regulations and inspections to ensure compliance with safety standards. The dam features an uncontrolled spillway and two valve gates for water release, with a hydraulic height of 34 feet and a normal storage capacity of 121 acre-feet. The surrounding area, including the city of Rock River, relies on this dam for irrigation water, emphasizing the importance of maintaining its structural integrity and functionality for agricultural purposes.

While Pine Cone No. 2 currently faces challenges such as poor condition assessment and a moderate risk level, proactive measures and regular inspections can help mitigate potential hazards and ensure the long-term sustainability of this essential water resource infrastructure. As climate change continues to impact water resources, the maintenance and management of dams like Pine Cone No. 2 are crucial for ensuring reliable access to water for irrigation and other purposes in the region.

Year Completed

1977

Dam Length

1650

Dam Height

39

River Or Stream

JACK DANIELS DRAW

Primary Dam Type

Earth

Surface Area

13

Hydraulic Height

34

Nid Storage

186

Structural Height

39

Outlet Gates

Valve - 2

Hazard Potential

Low

Foundations

Soil

Nid Height

39
       
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.