Bayou Dupont No 15 dam
Bayou Dupont No 15
Bayou Dupont No 15, also known as Miller, is a private earth dam located in Natchitoches, Louisiana, designed by USDA NRCS and completed in 1959. The dam serves multiple purposes including flood risk reduction, fish and wildlife pond, and recreation. It has a structural height of 30 feet and a dam length of 696 feet, with a storage capacity of 309 acre-feet and a drainage area of 0.39 square miles.
The dam is regulated by the Louisiana Department of Transportation and Development, with state permitting, inspection, and enforcement in place. Its hazard potential is considered significant, with a fair condition assessment as of July 2020. The spillway type is uncontrolled with a width of 10 feet, and the dam has a moderate risk assessment rating. The surrounding area is at risk of moderate inundation in case of a dam failure, with emergency action plans potentially needing updates to meet guidelines.
Overall, Bayou Dupont No 15 is a vital infrastructure for flood risk reduction in the region, with careful monitoring and management required to ensure the safety of the surrounding communities. Water resource and climate enthusiasts will find this structure of interest due to its multi-purpose design and the potential risks associated with its operation in the face of changing environmental conditions.
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 15 -- 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 | → |
| Bayou Grand Cane Near Stanley | · | → |
| Sabine Rv Nr Burkeville | 663 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Bayou Dupont No 15.
Campgrounds
Track Bayou Dupont No 15 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 15
Where does the data for Bayou Dupont No 15 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 15.