Unl - Ardc South Lagoon Dam dam
Unl - Ardc South Lagoon Dam
Unl - Ardc South Lagoon Dam is a state-regulated structure located in Saunders County, Nebraska, specifically in the city of Memphis. 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.
Dam data reference
Condition Assessment
- Satisfactory
- No 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.
- 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.
- 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.
Hazard Potential Classification
- High
- Dams 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, environmental 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.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Unl - Ardc South Lagoon Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Wahoo Creek At Ithaca | 221 cfs | → |
| Wahoo Cr At Ashland | 200 cfs | → |
| Rock Creek Near Ceresco | 90 cfs | → |
| Platte R Nr Ashland | 3,060 cfs | → |
| Salt Creek At Greenwood | 938 cfs | → |
| Platte River Nr Leshara | 1,800 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Unl - Ardc South Lagoon Dam.
Boat launches
- Memphis Lake Sra
- Lake Wanahoo Sra
- Main Boat Ramp
- Graske Crossing Boat Ramp
- Waterloo River Access
- North 242nd Street Douglas County
Track Unl - Ardc South Lagoon Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Unl - Ardc South Lagoon Dam
Where does the data for Unl - Ardc South Lagoon Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Unl - Ardc South Lagoon Dam.