Alkai Reservoir Reservoir Report
Nearby: Okie Sullivan No. 2
Last Updated: December 13, 2025
Alkai Reservoir in Wyoming, managed by the Bureau of Land Management, serves multiple purposes including fire protection, stock watering, and as a small fish pond.
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Summary
Completed in 1968, this gravity dam stands at a structural height of 23 feet and has a storage capacity of 25.22 acre-feet. The reservoir covers a surface area of 9.98 acres and is located in Fremont County near the town of Lysite.
With a low hazard potential but an unsatisfactory condition assessment, Alkai Reservoir poses a very high risk according to its risk assessment. Despite being regularly inspected by the Bureau of Land Management, the reservoir lacks an emergency action plan and has not been updated in recent years. Although the reservoir has a controlled spillway, it does not have outlet gates, and its drainage area is relatively small at 4.6 square miles. Water from the reservoir is sourced from Soda Draw Aikali Creek, making it an important water resource for the surrounding area.
Enthusiasts of water resources and climate in the region will find the Alkai Reservoir an intriguing case study due to its unique combination of purposes, structural design, and risk profile. As climate change continues to impact water resources, understanding the management and maintenance challenges faced by reservoirs like Alkai will be crucial for ensuring their long-term sustainability and effectiveness in serving the needs of local communities and ecosystems.
Year Completed |
1968 |
Dam Length |
377 |
River Or Stream |
SODA DRAW AIKALI CREEK |
Primary Dam Type |
Gravity |
Surface Area |
9.98 |
Hydraulic Height |
17 |
Drainage Area |
4.6 |
Nid Storage |
25.22 |
Structural Height |
23 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Middle Fork Powder River Near Barnum
|
7cfs |
Fivemile Creek Near Shoshoni
|
83cfs |
Wind River Ab Boysen Reservoir
|
666cfs |
Wind R Bl Boysen Res Wyo
|
819cfs |
Wind River At Riverton
|
366cfs |
Little Wind River Near Riverton
|
142cfs |
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.
Alkai Reservoir