Grummert Dam Reservoir Report
Nearby: Bill Hill Dam Frahm Road Dam
Last Updated: December 5, 2025
Grummert Dam, located in Nuckolls, Nebraska, is a privately owned earth dam constructed in 1966 for fire protection, stock, and small fish pond purposes.
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Summary
The dam stands at a height of 16 feet with a structural height of 19 feet, and a length of 710 feet, providing a storage capacity of 69 acre-feet. This dam plays a crucial role in managing water resources in the area, with a normal storage capacity of 24 acre-feet and a low hazard potential.
Managed by the Nebraska Department of Natural Resources, Grummert Dam is subject to state regulations, inspections, and enforcement to ensure its structural integrity and safety. The dam is primarily designed by the USDA NRCS and falls under the jurisdiction of the state regulatory agency. With a fair condition assessment as of 2016, Grummert Dam is regularly inspected every 5 years to assess its overall functionality and potential risks. The dam also serves as a key point of contact for fire protection, stock management, and recreational fishing activities in the region.
With a focus on fire protection and water storage for livestock, Grummert Dam stands as an essential infrastructure in the Superior area. Its location on the TR-Blakely Creek and its affiliation with the Natural Resources Conservation Service highlight its importance in water resource management in Nebraska. As a low-hazard dam, Grummert Dam continues to play a vital role in maintaining water supply and supporting various activities in the surrounding community.
Year Completed |
1966 |
Dam Length |
710 |
Dam Height |
16 |
River Or Stream |
TR-BLAKELY CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
15 |
Drainage Area |
0.4 |
Nid Storage |
69 |
Structural Height |
19 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
19 |
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.
Grummert Dam