Dunlap Dam 2 dam
Dunlap Dam 2
Dunlap Dam 2, located in Ardmore, South Dakota, is a crucial water resource infrastructure managed by a private entity for irrigation purposes. Constructed in 1955 by the USDA NRCS, this earth dam stands at a height of 17 feet, with a hydraulic height of 13 feet, and a structural height of 17 feet. The dam has a length of 635 feet and a storage capacity of 53 acre-feet, serving the local community with a normal storage capacity of 21 acre-feet.
Situated along the TR-Antelope Creek in Sioux County, Nebraska, Dunlap Dam 2 plays a significant role in regulating water flow, with a maximum discharge capacity of 810 cubic feet per second. Despite being categorized as having a low hazard potential, the dam's condition is assessed as satisfactory, with the last inspection conducted in September 2018. It is regulated by the Nebraska Department of Natural Resources, ensuring compliance with state jurisdiction, permitting, inspection, and enforcement requirements.
For water resource and climate enthusiasts, Dunlap Dam 2 serves as a vital infrastructure supporting irrigation activities in the region. With a focus on sustainable water management, this dam underscores the importance of maintaining and monitoring critical water resources to ensure the efficient and effective utilization of water for agricultural purposes. As a privately-owned structure, collaboration with state regulatory agencies such as the Nebraska DNR is essential to uphold safety standards and environmental stewardship in water resource management.
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 Dunlap Dam 2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cheyenne R At Edgemont Sd | 3 cfs | → |
| Hat Cr Near Edgemont Sd | 0 cfs | → |
| Cheyenne River Near Spencer | 2 cfs | → |
| Cheyenne R Below Angostura Dam Sd | 1 cfs | → |
| Horsehead Cr At Oelrichs Sd | · | → |
| Fall R At Hot Springs Sd | 35 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Dunlap Dam 2.
Track Dunlap Dam 2 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 Dunlap Dam 2
Where does the data for Dunlap Dam 2 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 Dunlap Dam 2.