Iberlin Reservoir Report
Nearby: Falxa No. 1 Goble No. 2
Last Updated: December 9, 2025
Iberlin, located in Wyoming, is a privately owned earth dam constructed in 1951 for fire protection, stock, or small fish pond purposes.
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Summary
The dam stands at a height of 30 feet with a hydraulic height of 25 feet and a structural height of 27 feet, spanning a length of 330 feet. It has a storage capacity of 169 acre-feet and a surface area of 13 acres, serving as a vital resource in the region for water management.
Despite its low hazard potential, Iberlin is assessed to be in poor condition as of May 2021, with an inspection frequency of every five years. The dam features an uncontrolled spillway and one uncontrolled outlet gate, posing a moderate risk level. While its drainage area and maximum discharge are currently listed as zero, the dam's location near the S Fork Four Mile Creek highlights its importance for managing water resources and climate-related challenges in the area.
As water resource and climate enthusiasts, the data on Iberlin provides valuable insights into the infrastructure supporting water management in Wyoming. With its historical significance and ongoing regulatory oversight by the SEO, understanding the condition and risk profile of dams like Iberlin is crucial for ensuring the safety and sustainability of water resources in the region.
Year Completed |
1951 |
Dam Length |
330 |
Dam Height |
30 |
River Or Stream |
S FORK FOUR MILE CREEK |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
25 |
Nid Storage |
169 |
Structural Height |
27 |
Outlet Gates |
Uncontrolled - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Powder River At Sussex
|
144cfs |
Nf Powder River Below Pass Creek
|
50cfs |
Clear Creek Near Buffalo
|
17cfs |
North Fork Powder River Near Hazelton
|
3cfs |
Rock Creek Near Buffalo
|
70cfs |
Piney Creek At Kearny
|
113cfs |
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.
Iberlin