Eden Dike 1 Reservoir Report

Last Updated: December 5, 2025

Eden Dike 1, located in Sweetwater County, Wyoming, is a federal-owned structure managed by the Bureau of Reclamation.


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Summary

Completed in 1906, this earth dam has a height of 28 feet and serves primarily for irrigation purposes, with a storage capacity of 14,421 acre-feet. Situated on Little Sandy Creek OS, the dam spans a length of 2,100 feet and covers a surface area of 1,166 acres.

Although classified as low hazard potential, Eden Dike 1 is under the regulatory oversight of the Bureau of Reclamation, with state jurisdiction and permitting requirements in place. The dam is not equipped with a spillway, but it does feature a slide gate for water release. Despite being in operation for over a century, the condition assessment and emergency action plan status for Eden Dike 1 are currently not available, indicating a need for further evaluation and documentation to ensure its safety and resilience in the face of potential risks and climate impacts.

As water resource and climate enthusiasts delve into the intricate details of Eden Dike 1, its historical significance and functional importance in supporting agricultural activities in the region become apparent. With a risk assessment rating of 'High (2)', there is a pressing need for ongoing monitoring, maintenance, and risk management measures to safeguard the dam and surrounding areas from potential inundation events. The collaborative efforts of federal and state agencies, along with the local community, are crucial in ensuring the long-term sustainability and reliability of this vital water resource infrastructure.

Year Completed

1906

Dam Length

2100

Dam Height

28

River Or Stream

LITTLE SANDY CREEK OS

Primary Dam Type

Earth

Surface Area

1166

Hydraulic Height

20

Drainage Area

6

Nid Storage

14421

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

28
       
Seasonal Comparison

Weather Forecast

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Nearby Streamflow Levels

Eden Dike 1PACIFIC CREEK NEAR FARSON Preview Pacific Creek Near Farson
2.69cfs
3cfs
Eden Dike 1BIG SANDY RIVER NEAR FARSON Preview Big Sandy River Near Farson
12.7cfs
13cfs
Eden Dike 1NEW FORK RIVER NEAR BIG PINEY Preview New Fork River Near Big Piney
295.0cfs
295cfs
Eden Dike 1GREEN RIVER BELOW FONTENELLE RESERVOIR Preview Green River Below Fontenelle Reservoir
862.0cfs
862cfs
Eden Dike 1GREEN RIVER NEAR LA BARGE Preview Green River Near La Barge
708.0cfs
708cfs
Eden Dike 1GREEN RIVER NEAR GREEN RIVER Preview Green River Near Green River
835.0cfs
835cfs

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.
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Nearby Reservoirs