Lonergan Dam dam
Lonergan Dam
Lonergan Dam, located in Omaha, Nebraska, along the TR-Little Papio Creek, stands as a vital water resource and recreational hub in Douglas County. Built in 1968, this earth-type dam boasts a height of 72 feet and a length of 1320 feet, providing essential storage of 2623 acre-feet for leisure activities and flood control. Managed by a private entity, Lonergan Dam is regulated by the Nebraska Department of Natural Resources, ensuring its safety and compliance with state standards.
With a hazard potential classified as high, Lonergan Dam has been assessed as satisfactory in condition, with the last inspection taking place in June 2020. The dam's emergency action plan (EAP) was last revised in June 2018, highlighting the importance of preparedness and risk management for this critical infrastructure. As a popular spot for outdoor enthusiasts, the reservoir created by Lonergan Dam covers a surface area of 120 acres, offering a picturesque setting for fishing, boating, and other water-based activities.
Overall, Lonergan Dam stands as a testament to the intersection of water resource management and climate resilience. Its role in providing both recreational opportunities and flood protection underscores the importance of maintaining and monitoring such infrastructure to ensure the safety and well-being of the surrounding community. As climate change continues to impact water resources, Lonergan Dam serves as a reminder of the essential role dams play in sustainable water management and environmental stewardship.
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 Lonergan Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big Papillion Cr | 39 cfs | → |
| Missouri River At Omaha | 28,900 cfs | → |
| Elkhorn River At Waterloo | 1,020 cfs | → |
| Platte River Nr Leshara | 1,750 cfs | → |
| Boyer River At Logan | 429 cfs | → |
| Platte R At Louisville Ne | 4,260 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lonergan Dam.
Boat launches
- Main Boat Ramp
- Dodge Park Road , 68112:68152 Omaha
- Main Boat Ramp
- Nebraska Boat Ramp
- Prairie View Recreation Area
- Park Road Council Bluffs
Track Lonergan 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 Lonergan Dam
Where does the data for Lonergan 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 High 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 Lonergan Dam.