Mader Dam 2 dam
Mader Dam 2
Mader Dam 2, located in Sioux, Nebraska, is a privately owned earth dam designed by the USDA NRCS and completed in 1957 for the primary purpose of irrigation. With a height of 20 feet and a length of 1192 feet, this dam has a storage capacity of 405 acre-feet and serves a drainage area of 1.1 square miles. The dam has a low hazard potential and is in satisfactory condition as of the last inspection in August 2019.
Managed by the Nebraska Department of Natural Resources, Mader Dam 2 is regulated, permitted, inspected, and enforced by state authorities to ensure its safe operation. The dam is situated along the TR-Indian Creek and has a maximum discharge capacity of 1700 cubic feet per second. Despite its age, Mader Dam 2 continues to provide essential irrigation water for agricultural purposes in the surrounding area, contributing to the sustainable management of water resources in the region.
As a key infrastructure for water supply and management in Ardmore SD, Nebraska, Mader Dam 2 plays a vital role in supporting the local agricultural community. With its stone core and soil foundation, the dam remains a reliable structure that helps control water flow and provides essential storage capacity during periods of high demand. Its continued maintenance and adherence to state regulations ensure the safety and effectiveness of this important water resource for years to come.
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 Mader Dam 2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Hat Cr Near Edgemont Sd | 0 cfs | → |
| Cheyenne R At Edgemont Sd | 3 cfs | → |
| Cheyenne R Below Angostura Dam Sd | 1 cfs | → |
| Horsehead Cr At Oelrichs Sd | · | → |
| Cheyenne River Near Spencer | 0 cfs | → |
| Fall R At Hot Springs Sd | 36 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mader Dam 2.
Boat launches
- County Highway 6d Fall River County
- Sheps Canyon Road Fall River County
- Whitney Lake
- South Boat Ramp Road Fall River County
- Fall River County
Campgrounds
- Toadstool
- Toadstool Geological Park And Campground
- Soldier Creek
- Fort Robinson State Park
- Crawford City Park
- Angostura State Rec Area
Paddle runs
Track Mader 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 Mader Dam 2
Where does the data for Mader 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 Mader Dam 2.