O'Connor Dam 2 Reservoir Report
Nearby: O'Connor Dam 1 Seberger Dam
Last Updated: December 13, 2025
O'Connor Dam 2 is a privately owned structure located in Dawson, Nebraska, specifically in the city of Sumner.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1955, this Earth-type dam stands at a height of 9 feet and stretches 144 feet in length, with a storage capacity of 71.9 acre-feet. Its primary purposes include flood risk reduction and other functions, making it a vital component in managing water resources in the area.
Despite its significant role, O'Connor Dam 2 is currently assessed with a poor condition, indicating the need for maintenance and potential improvements. With a low hazard potential, the dam poses minimal risk, but regular inspections are required to ensure its structural integrity and functionality. The Nebraska Department of Natural Resources (DNR) regulates and inspects the dam, emphasizing the importance of state oversight in safeguarding water resources and infrastructure.
Water enthusiasts and climate advocates can appreciate O'Connor Dam 2 as part of the larger network of structures that contribute to water management and flood control in Nebraska. Its presence along the Wood River reflects the collaborative efforts between private owners, state agencies, and regulatory bodies to uphold safety standards and protect the surrounding communities. As discussions on climate change and water scarcity continue, the maintenance and modernization of dams like O'Connor Dam 2 will be essential in adapting to evolving environmental conditions and ensuring sustainable water resource management.
Year Completed |
1955 |
Dam Length |
144 |
Dam Height |
9 |
River Or Stream |
TR-WOOD RIVER |
Primary Dam Type |
Earth |
Surface Area |
9.81 |
Hydraulic Height |
9 |
Drainage Area |
2 |
Nid Storage |
71.9 |
Structural Height |
9 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
9 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Buffalo Creek Nr Overton Nebr
|
3cfs |
Spring Creek Nr Overton
|
7cfs |
Platte River Near Overton
|
1390cfs |
Elm Creek Nr Elm Creek
|
0cfs |
Platte R Mid Ch
|
1280cfs |
Platte River Near Kearney
|
928cfs |
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.
O'Connor Dam 2