South Fork 11-1 dam
South Fork 11-1
South Fork 11-1 is a local government-owned earth dam located in Pawnee, Nebraska, designed by the USDA NRCS and regulated by the Nebraska Department of Natural Resources. Completed in 1978, this dam serves multiple purposes, including flood risk reduction, and has a height of 30 feet and a length of 727 feet. With a storage capacity of 72 acre-feet and a drainage area of 0.2 square miles, South Fork 11-1 plays a crucial role in water resource management in the area.
Despite its low hazard potential and satisfactory condition assessment, South Fork 11-1 undergoes inspection every five years to ensure its structural integrity and safety. The dam's emergency action plan status and risk assessment information are currently unavailable, indicating a potential area for improvement in the future. With a maximum discharge of 174 cubic feet per second, this dam is designed to manage water flow from the TR-LORES BR S FK BIG NEMAHA R river or stream, demonstrating its importance in mitigating flood risks and protecting the surrounding community in Dubois, Nebraska.
Overall, South Fork 11-1 stands as a vital infrastructure asset in Pawnee County, Nebraska, providing essential flood protection and water management services. With its key role in the local water resource system and regulated status, this dam showcases the collaborative efforts between local government agencies, the USDA NRCS, and the Nebraska Department of Natural Resources to ensure the safety and sustainability of water resources in the region.
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 South Fork 11-1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Turkey C Nr Seneca | 147 cfs | → |
| North Fork Big Nemaha River At Humboldt | 850 cfs | → |
| Big Nemaha River At Falls City | 1,470 cfs | → |
| Little Nemaha River At Auburn | 743 cfs | → |
| Big Blue R At Barneston Nebr | 2,280 cfs | → |
| Black Vermillion R Nr Frankfort | 174 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near South Fork 11-1.
Boat launches
- Iron Horse Trail Lake
- Kirkmans Cove Lake
- Burchard Lake Wma
- Pony Creek Boat Ramp
- Wolf - Wildcat
- Wirth Brothers
Track South Fork 11-1 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 South Fork 11-1
Where does the data for South Fork 11-1 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 South Fork 11-1.