Waubonsie Cr. Watershed Site 11-1 dam
Waubonsie Cr. Watershed Site 11-1
Located in Mills, Iowa, Waubonsie Creek Watershed Site 11-1 is a vital flood risk reduction infrastructure managed by the local government with oversight from the Iowa Department of Natural Resources. Designed by the USDA NRCS and completed in 1977, this earth dam stands at a height of 71 feet and spans 1050 feet, providing storage for up to 1902 acre-feet of water in its reservoir.
With a drainage area of 2.8 square miles and a surface area of 73 acres, this structure plays a crucial role in debris control and flood risk reduction for the surrounding area. Its spillway, of uncontrolled type, has a width of 3 feet, and the dam is rated with a low hazard potential and deemed to be in satisfactory condition during the latest inspection in July 2020. With moderate risk assessment, this site serves as a key player in managing water resources and climate challenges in the region.
Waubonsie Creek Watershed Site 11-1 serves as a testament to the collaboration between local government and federal agencies in mitigating flood risks in the area. As water resource and climate enthusiasts explore the data behind this infrastructure, its significance in protecting the community from potential hazards becomes evident. With a history of successful operation and maintenance, this site stands as a beacon of effective water management practices in Iowa, ensuring the safety and well-being of residents in the face of changing environmental conditions.
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 Waubonsie Cr. Watershed Site 11-1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| West Nishnabotna River At Randolph | 693 cfs | → |
| Weeping Water Creek At Union | 17 cfs | → |
| Missouri River At Nebraska City | 33,200 cfs | → |
| Nishnabotna River Above Hamburg | 1,550 cfs | → |
| Platte R At Louisville Ne | 4,040 cfs | → |
| Missouri River At Omaha | 29,100 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Waubonsie Cr. Watershed Site 11-1.
Boat launches
- Us 34;Us 275 Mills County
- Plattsmouth Boat Ramp
- Mills County
- I 29;Us 275 Mills County
- Haworth River Park
- Riverview Boat Ramp
Track Waubonsie Cr. Watershed Site 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 Waubonsie Cr. Watershed Site 11-1
Where does the data for Waubonsie Cr. Watershed Site 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 Waubonsie Cr. Watershed Site 11-1.