Thompson Lagoon 2-3 Dam Reservoir Report
Last Updated: December 15, 2025
Thompson Lagoon 2-3 Dam, located in North Loup, Nebraska, stands as a testament to effective private ownership and state regulation.
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Summary
Completed in 2017, this earth dam boasts a height of 19 feet and a length of 2400 feet, providing a storage capacity of 67 acre-feet. Situated on the North Branch of the Mira Creek, this dam serves multiple purposes, with a primary purpose classified as "Other". Despite its modest size, the dam's impact on the local environment and water resources is significant, covering a surface area of 3.85 acres and draining a 0.13 square mile watershed.
Managed by the Nebraska Department of Natural Resources, Thompson Lagoon 2-3 Dam is subject to regular state inspections, with a low hazard potential and a satisfactory condition assessment as of the last inspection in March 2018. The dam's emergency action plan status and risk assessment details remain undisclosed, underscoring the need for continued monitoring and preparedness. Although the dam lacks a spillway and outlet gates, its design and construction reflect a commitment to safety and regulatory compliance, ensuring its resilience against potential threats and contributing to the overall water management efforts in Valley County.
Thompson Lagoon 2-3 Dam stands as a vital component of the local water infrastructure, providing essential storage and flood control benefits while maintaining a low risk profile. With its completion in 2017, this earth dam symbolizes the intersection of private ownership, state regulation, and environmental stewardship, highlighting the importance of collaborative efforts in safeguarding water resources and mitigating the impacts of climate change. As climate enthusiasts and water resource advocates, the significance of Thompson Lagoon 2-3 Dam lies not only in its structural design and operational efficiency but also in its broader implications for sustainable water management practices in the region.
Year Completed |
2017 |
Dam Length |
2400 |
Dam Height |
19 |
River Or Stream |
N BR MIRA CREEK |
Primary Dam Type |
Earth |
Surface Area |
3.85 |
Hydraulic Height |
19 |
Drainage Area |
0.13 |
Nid Storage |
67 |
Structural Height |
19 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
19 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Loup River Nr St Paul Nebr
|
2580cfs |
North Loup River At Taylor
|
464cfs |
Middle Loup R. At St. Paul
|
1520cfs |
South Loup R At St. Michael
|
178cfs |
Warm Slough Nr Central City
|
0cfs |
Platte River Near Grand Island
|
1450cfs |
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.
Thompson Lagoon 2-3 Dam