Bayou Dupont No 18 dam
Bayou Dupont No 18
Bayou Dupont No 18, also known as Manasco, is a privately owned earth dam located in Natchitoches, Louisiana. Constructed in 1962 by the USDA NRCS, this dam serves the primary purpose of flood risk reduction along with providing benefits for fish and wildlife pond creation and recreational activities. With a dam height of 28 feet and a hydraulic height of 28 feet, Bayou Dupont No 18 has a storage capacity of 666 acre-feet and covers a surface area of 39 acres.
The dam, situated on Stoker Branch, has a significant hazard potential and is classified in fair condition as of the last inspection in July 2020. It has a controlled spillway width of 11 feet and a maximum discharge capacity of 2150 cubic feet per second. While the dam has not undergone significant modifications over the years, it is subject to regular inspections by the Louisiana Department of Transportation and Development as the state regulatory agency. It is vital for water resource and climate enthusiasts to monitor and assess the risk associated with Bayou Dupont No 18 to ensure its continued effectiveness in flood risk reduction and water management.
Overall, Bayou Dupont No 18 stands as a crucial infrastructure for flood risk reduction in Natchitoches, Louisiana, showcasing the intersection of water resource management and climate resilience. With its historical significance dating back to 1962, the dam continues to serve its primary purpose while offering additional benefits for wildlife and recreational activities. As efforts to maintain and improve the dam's condition continue, it remains essential for stakeholders and enthusiasts in the water resource and climate fields to stay informed about the risk management measures and regulatory oversight to ensure the safety and sustainability of Bayou Dupont No 18.
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 Bayou Dupont No 18 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bayou Pierre Near Lake End | 46 cfs | → |
| Bayou San Patricio Near Benson | 3 cfs | → |
| Bayou Toro Near Toro | 85 cfs | → |
| Sabine Rv At Toledo Bd Res Nr Burkeville | 336 cfs | → |
| Sabine Rv Nr Burkeville | 663 cfs | → |
| Bayou Grand Cane Near Stanley | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Bayou Dupont No 18.
Campgrounds
Track Bayou Dupont No 18 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 Bayou Dupont No 18
Where does the data for Bayou Dupont No 18 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 Significant 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 Bayou Dupont No 18.