Nantachie Lake Dam No. 2 Reservoir Report
Nearby: Nantachie Lake Dam Defee Lake Dam
Last Updated: December 9, 2025
Nantachie Lake Dam No.
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Summary
2, also known as Shell Point Dam, is a state-owned structure located in Louisiana, specifically in Grant County near the city of Aloha. This earth dam, completed in 1961, serves a primarily recreational purpose and is situated along Bayou Grappe. With a height of 29 feet and a storage capacity of 35,500 acre-feet, the dam covers a surface area of 1,580 acres and has a drainage area of 84 square miles.
Despite its low hazard potential and fair condition assessment, Nantachie Lake Dam No. 2 is regulated, permitted, inspected, and enforced by the Louisiana Department of Transportation and Development. The dam features slide outlet gates and is designed with buttress and stone cores on a soil foundation. The absence of a spillway means that the structure relies on its structural integrity to manage water levels and flow. The risk assessment for this dam is categorized as high (2), indicating the need for careful monitoring and management of potential safety concerns.
For water resource and climate enthusiasts, Nantachie Lake Dam No. 2 offers a fascinating example of human-made infrastructure intersecting with natural water systems. As part of the larger hydrological landscape, this dam plays a role in water storage and recreation while posing a potential risk that requires ongoing assessment and mitigation efforts. Its history, design, and management provide valuable insights into the complex relationship between human development and environmental conservation in the context of water resource management.
Year Completed |
1961 |
Dam Length |
2690 |
Dam Height |
29 |
River Or Stream |
BAYOU GRAPPE |
Primary Dam Type |
Earth |
Surface Area |
1580 |
Hydraulic Height |
23 |
Drainage Area |
84 |
Nid Storage |
35500 |
Structural Height |
29 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big Creek At Pollock
|
21cfs |
Dugdemona River Near Joyce
|
248cfs |
Little River Near Rochelle
|
506cfs |
Bayou Pierre Near Lake End
|
187cfs |
Calcasieu River Nr Glenmora
|
313cfs |
Saline Bayou Near Lucky
|
38cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
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. Investigations and studies are necessary.
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.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams 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, environment 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.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Colfax Rec Area Campground
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Saddle Bayou Camp Complex
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Saddle Bayou Camp
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Nantachie Lake Dam No. 2
Nantachie Lake Near Aloha