Canon No. 4 Reservoir Report
Nearby: Canon No. 1 Canon No. 2
Last Updated: December 5, 2025
Canon No.
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Summary
4, located in Albany County, Wyoming, is a privately owned Earth dam constructed in 1959 for irrigation purposes on Timber Canon Creek. With a height of 34 feet and a length of 370 feet, this dam provides a storage capacity of 77 acre-feet, with a normal storage level of 51 acre-feet. The dam's spillway type is uncontrolled, with a width of 24 feet, and it has an outlet gate valve for water release.
Despite being classified as having a low hazard potential and fair condition assessment, Canon No. 4 is subject to regular inspections every five years, with the last assessment conducted in June 2020. The risk assessment for this dam is moderate (3), indicating a need for ongoing monitoring and potential risk management measures in place. With its strategic location in the city of Torrington and its vital role in irrigation, Canon No. 4 serves as a crucial water resource structure in the region, regulated by the Wyoming State Engineer's Office.
Water resource and climate enthusiasts will be intrigued by Canon No. 4's unique characteristics, including its stone core and soil foundation, as well as its moderate risk assessment level. With its historical significance dating back to the late 1950s, this Earth dam continues to play a vital role in water storage and distribution for agricultural purposes in Wyoming. As climate change impacts water resources, understanding the condition and maintenance of structures like Canon No. 4 is essential for ensuring the sustainability and resilience of water infrastructure in the face of changing environmental conditions.
Year Completed |
1959 |
Dam Length |
370 |
Dam Height |
34 |
River Or Stream |
TIMBER CANON CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
32 |
Nid Storage |
77 |
Structural Height |
34 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Sybille Creek Ab Mule Creek
|
143cfs |
Laramie River Near Bosler
|
1950cfs |
Sybille Creek Ab Canal No. 3
|
93cfs |
Laramie River At Laramie
|
48cfs |
Little Laramie River Near Filmore
|
671cfs |
Crow Creek At 19th Street
|
3cfs |
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.
Canon No. 4