Sediment Pond 4a dam
Sediment Pond 4a
Sediment Pond 4a, located in Pleasanton, Kansas, is a privately owned rockfill dam designed by Alan Bowles, P.E. The dam stands at a height of 9.1 feet and has a storage capacity of 334.9 acre-feet, serving primarily for flood risk reduction in the area. With a low hazard potential and a condition assessment that is currently not rated, Sediment Pond 4a plays a crucial role in managing water resources and protecting against potential flooding events in Linn County.
Managed by the Kansas Department of Agriculture, Sediment Pond 4a has a normal storage capacity of 149.3 acre-feet and covers a surface area of 16.9 acres. The dam's drainage area is 0.71 square miles, with a maximum discharge capacity of 341 cubic feet per second. Despite the lack of a spillway type specified, the structure meets state regulatory requirements for inspection, permitting, and enforcement, ensuring its operational safety and compliance with water resource management standards.
With its strategic location and design features, Sediment Pond 4a contributes significantly to flood risk reduction efforts in the region, providing a vital buffer against potential inundation events. As a key component of the state's water infrastructure, this rockfill dam exemplifies the importance of sustainable water resource management and climate resilience in safeguarding communities and ecosystems against the impacts of extreme weather events and ensuring the long-term integrity of water supply systems in Kansas.
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 Sediment Pond 4a -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Marais Des Cygnes R Nr Ks-Mo St Line | 8,390 cfs | → |
| Marais Des Cygnes R At La Cygne | 7,900 cfs | → |
| L Osage R At Fulton | 1,260 cfs | → |
| South Grand River At Archie | 223 cfs | → |
| Little Osage R. At Horton | 4,070 cfs | → |
| Marmaton R Nr Fort Scott | 953 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Sediment Pond 4a.
Boat launches
- Drexel
- I 49;Us 71 Bates County
- East 319th Street Cass County
- Vernon County
- Bates County
- South 1500 Road Vernon County
Track Sediment Pond 4a 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 Sediment Pond 4a
Where does the data for Sediment Pond 4a 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 Sediment Pond 4a.