Enl. Spring Reservoir Report
Nearby: Catwalk Cedar Gulch
Last Updated: December 5, 2025
Enl.
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Summary
Spring is a private water resource nestled in the picturesque landscape of Sheridan, Wyoming. This irrigation dam, completed in 2005 by designer Hugh Lowham, stands as a vital structure along the Aragonite Draw river, serving multiple purposes such as fire protection, stock watering, and maintaining small fish ponds. With a dam height of 30 feet and a hydraulic height of 32 feet, Enl. Spring offers a storage capacity of 40 acre-feet, supporting a normal storage level of 30 acre-feet.
Despite its importance, Enl. Spring's condition assessment indicates poor maintenance, with a hazard potential rated as low. The dam features an uncontrolled spillway width of 100 feet and an outlet gate for controlled water release. With a drainage area of 0.4 square miles and a maximum discharge capacity of 1455 cubic feet per second, this structure plays a crucial role in managing water resources in the region. The site, located in an unnamed ranch area, is subject to state regulation and inspection, ensuring compliance with safety standards.
Enl. Spring's risk assessment suggests a moderate level of risk, emphasizing the need for ongoing monitoring and potential risk management measures. With Liz Cheney (R) representing the Congressional District of Wyoming where the dam is situated, stakeholders and water resource enthusiasts are encouraged to stay updated on the structure's maintenance and regulatory status to ensure the preservation of this essential water management infrastructure.
Year Completed |
2005 |
Dam Length |
480 |
Dam Height |
30 |
River Or Stream |
ARAGONITE DRAW |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
32 |
Drainage Area |
0.4 |
Nid Storage |
40 |
Structural Height |
39 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
39 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Prairie Dog Creek Near Acme
|
19cfs |
Tongue River At State Line Nr Decker Mt
|
195cfs |
Goose Creek Near Acme
|
123cfs |
Tongue River At Monarch
|
383cfs |
Tongue River At Tongue R Dam Nr Decker Mt
|
118cfs |
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.
Enl. Spring