Knoll Lake Dam dam
Knoll Lake Dam
Knoll Lake Dam, located in De Soto, Louisiana, is a privately owned structure designed by the USDA NRCS for the primary purpose of serving as a Fish and Wildlife Pond. Completed in 2002, this Earth dam stands at a height of 23 feet with a hydraulic height of 21 feet, providing a storage capacity of 207 acre-feet. With a surface area of 18 acres and a drainage area of 0.18 square miles, Knoll Lake Dam plays a crucial role in maintaining water resources for the surrounding area.
Managed by the Louisiana Department of Transportation and Development, Knoll Lake Dam is regulated, inspected, and enforced for safety and environmental compliance. The dam's spillway, with a width of 40 feet, operates as an uncontrolled overflow mechanism to manage excess water flow and prevent flooding. Despite being categorized as having a low hazard potential, the dam's overall condition is assessed as fair, with regular inspections conducted every five years to ensure its structural integrity. Additionally, the risk assessment for Knoll Lake Dam indicates a moderate risk level, highlighting the importance of ongoing monitoring and risk management measures.
As a key feature in the Little Bayou Na Bonchasse watershed, Knoll Lake Dam not only provides recreational opportunities but also supports the local fish and wildlife populations. Its strategic location and design demonstrate a commitment to water resource management and conservation efforts in the region. For water resource and climate enthusiasts, Knoll Lake Dam serves as a noteworthy example of responsible dam construction and operation, showcasing the importance of balancing human needs with environmental sustainability.
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 Knoll Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cypress Bayou Near Keithville | 67 cfs | → |
| Bayou San Patricio Near Benson | 39 cfs | → |
| Bayou Grand Cane Near Stanley | · | → |
| Red Chute Bayou At Sligo | 259 cfs | → |
| Bayou Pierre Near Lake End | 26 cfs | → |
| Sabine Rv Nr Carthage | 7,250 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Knoll Lake Dam.
Track Knoll Lake 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 Knoll Lake Dam
Where does the data for Knoll Lake 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 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 Knoll Lake Dam.