Twelve Mile Creek Watershed Site 67 dam
Twelve Mile Creek Watershed Site 67
Twelve Mile Creek Watershed Site 67, located in Union County, Iowa, is a vital resource managed by the local government for various purposes including fire protection, stock maintenance, and small fish pond activities. This earth dam, constructed in 1979 by USDA NRCS, stands at a height of 28 feet and spans 320 feet, with a storage capacity of 50 acre-feet. The dam serves as a flood risk reduction measure for the surrounding area, with a drainage area of 0.21 square miles and a surface area of 3.1 acres.
Managed by the Iowa Department of Natural Resources, this dam is regulated, permitted, and inspected to ensure its structural integrity and functionality. With a low hazard potential and a moderate risk assessment rating, the site is considered to be in satisfactory condition, although its emergency action plan and risk management measures are yet to be fully established. The location's proximity to Twelve Mile Creek enhances its ecological importance, making it an essential component of the local water resource management system in the region.
Overall, Twelve Mile Creek Watershed Site 67 serves as a crucial infrastructure for water resource management and climate resilience in the area. With its strategic positioning, effective regulation, and multiple purposes, this dam plays a significant role in mitigating flood risks, supporting local agricultural activities, and ensuring the overall ecological balance of the watershed. Enthusiasts of water resources and climate management can appreciate the site's importance in sustainable development and environmental conservation efforts in Union County, Iowa.
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 Twelve Mile Creek Watershed Site 67 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Raccoon River At Van Meter | 2,980 cfs | → |
| South Raccoon River At Redfield | 750 cfs | → |
| East Fork 102 River At Bedford | 1 cfs | → |
| Thompson River At Davis City | 8,610 cfs | → |
| Raccoon River Near West Des Moines | 1,320 cfs | → |
| North River Near Norwalk | 1,200 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Twelve Mile Creek Watershed Site 67.
Boat launches
Track Twelve Mile Creek Watershed Site 67 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 Twelve Mile Creek Watershed Site 67
Where does the data for Twelve Mile Creek Watershed Site 67 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 Twelve Mile Creek Watershed Site 67.