Unl - Ardc South Lagoon Dam Reservoir Report
Last Updated: December 15, 2025
Unl - Ardc South Lagoon Dam is a state-regulated structure located in Saunders County, Nebraska, specifically in the city of Memphis.
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Summary
Completed in 2013, this earth dam stands at a height of 17 feet and stretches 2300 feet in length, creating a storage capacity of 61.3 acre-feet with a normal storage of 30.5 acre-feet. The dam serves as a critical component for managing the water resources of the TR-Wahoo Creek, with a low hazard potential and satisfactory condition assessment.
This dam plays a vital role in water resource management for the region, as it helps control the flow of water and provides storage for irrigation, municipal, and recreational purposes. Owned and regulated by the Nebraska Department of Natural Resources (NE DNR), the dam undergoes regular inspections to ensure its structural integrity and safety. The surrounding area, with a surface area of 5.17 acres and a drainage area of 0.05 square miles, benefits from the water management capabilities of this structure, contributing to the overall climate resilience of the community.
As climate change continues to impact water availability and extreme weather events become more frequent, the Unl - Ardc South Lagoon Dam stands as a crucial infrastructure for mitigating flood risks and ensuring water security for the residents of Saunders County. With its efficient design and satisfactory condition, this dam exemplifies the importance of proactive water resource management in adapting to a changing climate and safeguarding communities against potential hazards.
Year Completed |
2013 |
Dam Length |
2300 |
Dam Height |
17 |
River Or Stream |
TR-WAHOO CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.17 |
Hydraulic Height |
17 |
Drainage Area |
0.05 |
Nid Storage |
61.3 |
Structural Height |
17 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wahoo Creek At Ithaca
|
53cfs |
Wahoo Cr At Ashland
|
78cfs |
Rock Creek Near Ceresco
|
14cfs |
Platte R Nr Ashland
|
6290cfs |
Salt Creek At Greenwood
|
125cfs |
Platte River Nr Leshara
|
5270cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Saunders County Fairgrounds Campground
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Linoma
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Ashland RV Campground
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Eugene T. Mahoney State Park
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Unl - Ardc South Lagoon Dam