Arehart Dam Reservoir Report
Nearby: Wilke Bros Farms Dam Sweeney Dam
Last Updated: December 6, 2025
Arehart Dam, located in Alma, Nebraska, is a privately owned structure designed by the USDA NRCS for flood risk reduction along the TR-ELM CREEK.
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Summary
Completed in 1995, this earth dam stands at 28 feet high with a structural height of 33 feet and a length of 358 feet. It has a storage capacity of 150 acre-feet, with a normal storage level of 20 acre-feet, serving a drainage area of 1.6 square miles.
With a low hazard potential and fair condition assessment, Arehart Dam is regulated by the Nebraska Department of Natural Resources, which oversees its permitting, inspections, and enforcement. The dam has a maximum discharge capacity of 288 cubic feet per second, and its primary purpose is flood risk reduction. Despite its modest surface area of 7 acres, Arehart Dam plays a crucial role in protecting the surrounding community from potential flooding events, highlighting the importance of effective water resource management in the region.
As an essential infrastructure in Phelps County, Nebraska, Arehart Dam is part of the larger network of flood control measures in the area. Its strategic location, design, and operational oversight by the NE DNR ensure that it continues to serve its purpose effectively. With its modest size and capacity, Arehart Dam showcases the practicality and efficiency of earth dams in mitigating flood risks and safeguarding communities against water-related disasters in the region.
Year Completed |
1995 |
Dam Length |
358 |
Dam Height |
28 |
River Or Stream |
TR-ELM CREEK |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
27 |
Drainage Area |
1.6 |
Nid Storage |
150 |
Structural Height |
33 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Platte River Near Overton
|
1040cfs |
Platte R Mid Ch
|
1190cfs |
Spring Creek Nr Overton
|
7cfs |
Buffalo Creek Nr Overton Nebr
|
4cfs |
Elm Creek Nr Elm Creek
|
0cfs |
Sappa Creek Near Stamford
|
4cfs |
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.
Arehart Dam