Hansen Dam 1239 dam
Hansen Dam 1239
Hansen Dam 1239, located in Alliance, Nebraska, serves as a vital water resource structure along TR-Point of Rocks Creek. Built in 1974 by the USDA NRCS, this private earth dam stands at 24 feet high and stretches 758 feet in length. With a storage capacity of 273 acre-feet and a maximum discharge of 1044 cubic feet per second, the dam plays a crucial role in flood risk reduction and other water management purposes.
Managed by the Nebraska Department of Natural Resources, Hansen Dam 1239 is subject to state regulation, inspection, and enforcement to ensure its structural integrity and safety. Despite its low hazard potential, the dam is regularly monitored and found to be in satisfactory condition during its last assessment in October 2017. The dam's emergency action plan status and risk assessment information are currently not available, highlighting the importance of ongoing monitoring and risk management measures to protect the surrounding area from potential water-related hazards.
As an essential component of the local water infrastructure, Hansen Dam 1239 provides valuable storage and flood protection benefits to the community. With its stone core and soil foundation, the dam's design and construction by the Natural Resources Conservation Service reflect a commitment to sustainable water resource management. Understanding the dam's characteristics and regulatory oversight is crucial for water resource and climate enthusiasts seeking to appreciate the role of such infrastructure in maintaining water security and resilience 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 Hansen Dam 1239 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| North Platte River At Wyoming-Nebraska State Line | 159 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hansen Dam 1239.
Boat launches
Campgrounds
- Box Butte State Rec Area
- Butte View
- Scout's Rest
- Lake Minatare State Rec Area
- Lake View Campground West
- Lake View Campground East
Paddle runs
More reservoirs
Track Hansen Dam 1239 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 Hansen Dam 1239
Where does the data for Hansen Dam 1239 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 Hansen Dam 1239.