C.A. Sherwin #1 Reservoir Report
Nearby: C.A. Sherwin #2 Point Of Rocks
Last Updated: December 5, 2025
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Summary
Sherwin #1, also known as Cucarol's Dam, is a privately owned earth dam located in Logan County, Colorado. Completed in 1915, this irrigation dam on Cedar Creek stands at a height of 12 feet and has a length of 800 feet. With a storage capacity of 65 acre-feet and a normal storage level of 50 acre-feet, this structure primarily serves the purposes of irrigation, fire protection, stock, and small fish pond.
This low hazard potential dam has a high risk assessment rating of 2, indicating the need for careful monitoring and management. While it has not been rated for condition assessment, the dam is regulated and inspected by the Colorado Department of Water Resources. With a spillway width of 400 feet and a maximum discharge capacity of 5466 cubic feet per second, C.A. Sherwin #1 plays a vital role in managing water resources for agricultural and environmental purposes in the region.
Despite its age, C.A. Sherwin #1 continues to support the local community in Iliff, Colorado, by providing reliable water for irrigation and other essential uses. As a key structure on Cedar Creek, this dam exemplifies the importance of sustainable water management practices in the face of changing climate conditions and increasing water demands. Its history and functionality highlight the critical role that dams play in ensuring water security and resilience in the face of environmental challenges.
Year Completed |
1915 |
Dam Length |
800 |
Dam Height |
12 |
River Or Stream |
CEDAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
12 |
Nid Storage |
65 |
Structural Height |
12 |
Hazard Potential |
Low |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
South Platte River Near Crook
|
166cfs |
South Platte River At Cooper Bridge
|
13cfs |
South Platte River At Fort Morgan
|
223cfs |
South Platte River Near Weldona
|
179cfs |
Lodgepole Creek At Bushnell
|
2cfs |
S. Platte R. At Julesburg
|
-999cfs |
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.
C.A. Sherwin #1