Porter Dam Reservoir Report
Nearby: Eggers Dam 338 Hofts Dam
Last Updated: December 5, 2025
Porter Dam, located in Deshler, Nebraska, is a privately-owned structure designed for flood risk reduction along TR-Spring Creek.
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Summary
Completed in 1980, this earth-type dam stands at a height of 12.5 feet and spans 300 feet in length. With a normal storage capacity of 34.9 acre-feet and a total NID storage of 133.7 acre-feet, Porter Dam serves as a crucial asset in managing water resources in the Nuckolls County area.
Despite its importance, Porter Dam has been assessed as being in poor condition as of April 2017, with a low hazard potential. The dam is under the jurisdiction of the Nebraska Department of Natural Resources and is subject to state regulation, permitting, inspection, and enforcement. While the dam's emergency action plan status and risk assessment measures are not clearly outlined, its operational and safety aspects are monitored with a five-year inspection frequency in place.
As an essential component of the local water infrastructure, Porter Dam plays a vital role in flood control and water resource management in the region. While facing some maintenance challenges, the dam's significance in mitigating flood risk along TR-Spring Creek underscores the importance of ongoing monitoring and maintenance to ensure its continued effectiveness in safeguarding the surrounding communities and ecosystems.
Year Completed |
1980 |
Dam Length |
300 |
Dam Height |
12.5 |
River Or Stream |
TR-SPRING CREEK |
Primary Dam Type |
Earth |
Surface Area |
10.9 |
Hydraulic Height |
12.5 |
Drainage Area |
2.15 |
Nid Storage |
133.7 |
Structural Height |
12.5 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
13 |
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.
Porter Dam