Cook Southeast Dam Reservoir Report
Nearby: Kilpatrick Dam Laursen Dam
Last Updated: December 13, 2025
Cook Southeast Dam, located in Alliance, Nebraska, serves multiple purposes including fire protection, stock, and small fish pond management.
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Summary
This private dam on Snake Creek was completed in 1953 and stands at a height of 6.7 meters, with a storage capacity of 123.2 acre-feet. While it has a low hazard potential, the dam is state-regulated, inspected, and enforced by the Nebraska Department of Natural Resources.
The dam, primarily constructed with earth and stone materials, spans 455 meters and covers a surface area of 28.1 acres within a drainage area of 187.5 square kilometers. Its maximum discharge capacity reaches 902 cubic meters per second, ensuring effective flood control and water management in the region. Despite not being rated for its condition, the dam has undergone regular inspections every 10 years, with the last assessment taking place in February 2012.
Overall, Cook Southeast Dam represents a vital infrastructure element in Box Butte County, Nebraska, providing essential water resources for various uses while maintaining a low-risk profile. As climate change impacts water availability and quality, such dams play a crucial role in ensuring sustainable water management practices and supporting ecosystem health in the region. With proper regulation, inspection, and maintenance, dams like Cook Southeast Dam contribute to the resilience of local communities and ecosystems against the challenges posed by a changing climate.
Year Completed |
1953 |
Dam Length |
455 |
Dam Height |
6.7 |
River Or Stream |
SNAKE CREEK |
Primary Dam Type |
Earth |
Surface Area |
28.1 |
Hydraulic Height |
6.7 |
Drainage Area |
187.5 |
Nid Storage |
123.2 |
Structural Height |
6.7 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
7 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Cook Southeast Dam