Upper Yockanookany Ws Str 1 Dam dam
Upper Yockanookany Ws Str 1 Dam
The Upper Yockanookany WS Str 1 Dam, located in Ackerman, Mississippi, is a key structure for flood risk reduction along the Yockanookany River. Built in 1975 by the USDA NRCS, this earth dam stands at a height of 25 feet and has a storage capacity of 249 acre-feet. With a high hazard potential and satisfactory condition assessment, the dam is closely monitored by the Mississippi Department of Environmental Quality, which regulates its operation, inspection, and enforcement.
This dam plays a crucial role in protecting the surrounding area from flooding, with a maximum discharge capacity of 5,190 cubic feet per second. The spillway, designed as uncontrolled, ensures controlled release of water during periods of high flow. The dam's primary purpose is flood risk reduction, reflecting its importance in safeguarding the community against potential water-related disasters. Its location in Choctaw County also highlights the significance of water resource management in this region.
As a part of the National Inventory of Dams, the Upper Yockanookany WS Str 1 Dam undergoes regular inspections to ensure its structural integrity and safety. With an inspection frequency of 5 years and a risk assessment rating of moderate, measures are in place to manage potential risks effectively. The dam's presence as a vital infrastructure for water resource management in Mississippi underscores the importance of sustainable practices and climate resilience in safeguarding communities and ecosystems.
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 Upper Yockanookany Ws Str 1 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Yockanookany River Nr Kosciusko | 81 cfs | → |
| Catalpa Creek At Mayhew | 2,940 cfs | → |
| Pearl River At Burnside | 1,000 cfs | → |
| Big Black River At West | 1,470 cfs | → |
| Pearl River At Edinburg | 380 cfs | → |
| Noxubee River At Macon | 95 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Upper Yockanookany Ws Str 1 Dam.
Track Upper Yockanookany Ws Str 1 Dam 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 Upper Yockanookany Ws Str 1 Dam
Where does the data for Upper Yockanookany Ws Str 1 Dam 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 High 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 Upper Yockanookany Ws Str 1 Dam.