U-B Subwatershed Site 2c-1 dam
U-B Subwatershed Site 2c-1
U-B Subwatershed Site 2c-1, located in Monona, Iowa, is a dam with a primary purpose of fire protection, stock, or small fish pond, as well as flood risk reduction. Built in 1962 by the USDA NRCS, this earth dam stands at 34 feet high and spans 238 feet in length, with a storage capacity of 45 acre-feet. Situated on TR-BEAVER CREEK, it serves as a crucial water management structure in the region.
Managed by the Iowa DNR, U-B Subwatershed Site 2c-1 is state-regulated, permitted, inspected, and enforced to ensure its safety and functionality. With a low hazard potential and moderate risk assessment rating, this dam plays a significant role in water resource management and emergency preparedness for the surrounding area. While it currently holds a "Not Rated" condition assessment, ongoing risk management measures are in place to maintain its integrity.
Despite being last inspected in 1963, U-B Subwatershed Site 2c-1 remains a key feature in the local water infrastructure, providing essential services such as flood control and water storage. With its strategic location and design, this dam continues to support the community's water resource needs while mitigating potential risks associated with its operation.
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 U-B Subwatershed Site 2c-1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Sioux River Near Turin | 1,680 cfs | → |
| Monona-Harrison Ditch Near Turin | 187 cfs | → |
| Maple River At Mapleton | 264 cfs | → |
| Soldier River At Pisgah | 125 cfs | → |
| West Fork Ditch At Hornick | 80 cfs | → |
| Missouri River At Decatur | 26,300 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near U-B Subwatershed Site 2c-1.
Boat launches
Campgrounds
Track U-B Subwatershed Site 2c-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 U-B Subwatershed Site 2c-1
Where does the data for U-B Subwatershed Site 2c-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 U-B Subwatershed Site 2c-1.