Reynolds No. 2 Reservoir Report
Nearby: Reynolds No. 1 Gill No. 5 Stock
Last Updated: December 5, 2025
Reynolds No.
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Summary
2 is a privately owned Earth dam located in Sheridan, Wyoming, along Twin Creek. Built in 1922 for irrigation purposes, this dam stands at a height of 30 feet with a hydraulic height of 25 feet. With a storage capacity of 136 acre-feet, it serves multiple purposes including fire protection, stock watering, and small fish pond maintenance. The dam covers a surface area of 12 acres and has a spillway width of 15 feet.
Despite being classified as having a low hazard potential, Reynolds No. 2 is regularly inspected and maintained to ensure its structural integrity. The dam's condition assessment in 2018 was deemed fair, with an inspection frequency of once every five years. Emergency action plans are in place, and the risk assessment has been categorized as moderate. With Liz Cheney (R) representing the Congressional District in which it is located, Reynolds No. 2 plays a crucial role in water resource management in the region.
Overall, Reynolds No. 2 serves as a vital infrastructure for irrigation and water management in Sheridan, Wyoming. Its historical significance, combined with its multiple functionalities and regulatory oversight, highlights the importance of maintaining and ensuring the safety of this essential water resource structure. Climate and water resource enthusiasts will find this dam's construction details and operational data fascinating, showcasing the intersection of human engineering and environmental stewardship.
Year Completed |
1922 |
Dam Length |
1780 |
Dam Height |
30 |
River Or Stream |
TWIN CREEK |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
25 |
Nid Storage |
136 |
Structural Height |
30 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
East Pass Creek Near Dayton
|
12cfs |
West Pass Creek Near Parkman
|
10cfs |
Tongue River Near Dayton
|
48cfs |
Little Bighorn River At State Line Nr Wyola Mt
|
80cfs |
Tongue River At Monarch
|
383cfs |
Goose Creek Near Acme
|
123cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Tongue Canyon Campground
|
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Tongue River Camp - Amsden Creek WMA
|
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Connor Battlefield State Park
|
Reynolds No. 2
Bridge At Tongue River Canyon To Burgess Picnic Grounds