Bayou Dupont No 2 dam
Bayou Dupont No 2
Bayou Dupont No 2, also known as Patterson Pond, is a privately owned earth dam located in Sabine, Louisiana. Built in 1959 by the USDA NRCS, this structure serves multiple purposes including flood risk reduction, fish and wildlife habitat, and recreation. With a dam height of 32 feet and a storage capacity of 3,165 acre-feet, the dam covers a surface area of 46 acres and drains a watershed of 5.29 square miles.
Managed by the Louisiana Department of Transportation and Development, Bayou Dupont No 2 has a significant hazard potential and is rated in fair condition as of the last inspection in July 2020. The dam features an uncontrolled spillway with a width of 10 feet and has undergone structural modifications in 2009. While the risk assessment remains at a moderate level, the structure has not been assigned a Dam Safety Action Classification (DSAC) date, suggesting ongoing monitoring and management measures are in place to ensure the safety and integrity of the dam.
For water resource and climate enthusiasts, Bayou Dupont No 2 presents an intriguing case study of a multi-purpose dam designed for flood risk reduction and environmental enhancement. The collaboration between private ownership, federal agencies, and state regulators highlights the importance of effective dam management for both safety and environmental sustainability. As efforts continue to maintain and improve the dam's condition, it serves as a reminder of the vital role that such structures play in balancing water resource management and ecological conservation in Louisiana.
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 2 -- 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 | → |
| Bayou Grand Cane Near Stanley | · | → |
| Sabine Rv At Toledo Bd Res Nr Burkeville | 336 cfs | → |
| Sabine Rv Nr Burkeville | 663 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Bayou Dupont No 2.
Track Bayou Dupont No 2 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 2
Where does the data for Bayou Dupont No 2 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 2.