East Fork Big Cr Wtrshd Site Z-6 dam
East Fork Big Cr Wtrshd Site Z-6
East Fork Big Creek Watershed Site Z-6 in Decatur County, Iowa, is a local government-owned structure designed by USDA NRCS to manage flood risk in the area. Completed in 2003, this earth dam stands at 18 feet tall and stretches 505 feet in length, providing storage for up to 61 acre-feet of water. Situated on Zadie Creek, this dam plays a crucial role in reducing the risk of flooding in the region.
With a low hazard potential and a moderate risk assessment rating, East Fork Big Creek Watershed Site Z-6 is regulated, permitted, inspected, and enforced by the Iowa Department of Natural Resources. The dam's primary purpose is flood risk reduction, with a spillway width of 1 foot and uncontrolled spillway type. The structure's condition assessment is currently not rated, with no emergency action plan in place as of the last update in May 2021.
Water resource and climate enthusiasts will appreciate the strategic location of East Fork Big Creek Watershed Site Z-6, its importance in flood management, and the collaborative efforts of local government and USDA NRCS in its design and construction. As a key component in the region's water resource infrastructure, this earth dam serves as a vital tool in protecting communities and the environment from the impacts of extreme weather events and ensuring sustainable water management in Decatur 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 East Fork Big Cr Wtrshd Site Z-6 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Thompson River At Davis City | 8,610 cfs | → |
| East Fork Big Creek Near Bethany | 684 cfs | → |
| Thompson River At Trenton | 13,900 cfs | → |
| East Fork 102 River At Bedford | 1 cfs | → |
| South Fork Chariton River Near Promise City | 284 cfs | → |
| Chariton River Near Chariton | 1,480 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near East Fork Big Cr Wtrshd Site Z-6.
Track East Fork Big Cr Wtrshd Site Z-6 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 East Fork Big Cr Wtrshd Site Z-6
Where does the data for East Fork Big Cr Wtrshd Site Z-6 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 East Fork Big Cr Wtrshd Site Z-6.