Lake Rosemound Dam Reservoir Report

Last Updated: December 6, 2025

Lake Rosemound Dam in Louisiana, designed by William Crockett Horton, P.E., stands as a structure of significant importance for water resource and climate enthusiasts.


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Summary

Completed in 1960, this earth dam serves primarily for recreation purposes, offering a surface area of 182 acres and a maximum storage capacity of 4000 acre-feet. Situated in the Hollywood community of West Feliciana County, Louisiana, the dam spans 2500 feet and reaches a height of 30 feet, with a spillway width of 420 feet to manage potential overflow.

Managed by a private owner, Lake Rosemound Dam is regulated by the Louisiana Department of Transportation and Development, ensuring state permitting, inspection, and enforcement standards are met. With a fair condition assessment and a moderate risk rating, the dam's hazard potential is deemed significant, prompting an inspection frequency of every three years to monitor its structural integrity and safety. Despite its age, Lake Rosemound Dam continues to provide essential water management and recreational opportunities for the local community, highlighting the importance of maintaining and safeguarding critical water resources in the face of changing climate conditions.

Year Completed

1960

Dam Length

2500

Dam Height

30

River Or Stream

GALES CREEK

Primary Dam Type

Earth

Surface Area

182

Hydraulic Height

27.4

Drainage Area

2.66

Nid Storage

4000

Structural Height

30

Hazard Potential

Significant

Foundations

Soil

Nid Height

30
       
Seasonal Comparison

Weather Forecast

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. 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

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, 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.