Anticline Disposal Reservoir Report

Last Updated: December 5, 2025

Anticline Disposal is a private water resource infrastructure located in Sublette, Wyoming, specifically designed for irrigation purposes.


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Summary

The dam, completed in 2005, stands at 25 feet tall and spans 3643 feet in length, with a storage capacity of 123.5 acre-feet. Despite its low hazard potential, the dam is classified as having poor condition, indicating a pressing need for maintenance and upgrades.

Situated on Jensen Draw (off channel), Anticline Disposal plays a crucial role in regulating water flow for agricultural activities in the region. However, the dam lacks key safety features such as a spillway, posing potential risks in the event of overflow or excessive water accumulation. With a high risk assessment rating, there is a pressing need for regulatory agencies like SEO and DEQ to conduct regular inspections and enforce necessary measures to ensure the safety and functionality of the structure.

As climate change continues to impact water resources and weather patterns, the importance of maintaining and upgrading critical infrastructure like Anticline Disposal cannot be overstated. With Liz Cheney (R) as the Congressional representative overseeing the area, there is an opportunity for collaboration and investment in sustainable water management practices to mitigate risks and safeguard the environment for future generations.

Year Completed

2005

Dam Length

3643

Dam Height

25

River Or Stream

JENSEN DRAW (OFF CHANNEL)

Primary Dam Type

Earth

Surface Area

30.17

Hydraulic Height

25

Drainage Area

0.05

Nid Storage

123.5

Structural Height

25

Outlet Gates

None

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

25
       
Seasonal Comparison

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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.