Grenada Dam Reservoir Report

Last Updated: December 5, 2025

Grenada Dam, also known as Grenada Lake, is a vital flood risk reduction structure located in Grenada, Mississippi.


°F

°F

mph

Wind

%

Humidity

Summary

Owned and operated by the US Army Corps of Engineers, this earth dam stands at 80 feet high and has a hydraulic height of 97 feet, with a structural height of 103 feet. Completed in 1954, the dam serves multiple purposes including flood risk reduction and recreation, offering a storage capacity of 2,722,100 acre-feet and a normal storage of 85,700 acre-feet.

To manage the risks associated with the dam, the USACE implements various measures such as regular inspections, repairs to the spillway channel, and monitoring the dam's soil pressure using relief wells and pumps. The agency collaborates closely with other organizations like the National Weather Service, U.S. Geologic Survey, and Mississippi Emergency Management Agency to ensure effective emergency response plans are in place. During high water events, dam safety professionals increase surveillance to 24 hours a day to optimize the dam's operations and respond promptly to any potential issues. Overall, Grenada Dam is a critical structure that plays a key role in minimizing flood risks in the region while balancing its various project functions.

Year Completed

1954

Dam Length

13900

Dam Height

80

River Or Stream

YALOBUSHA RIVER

Primary Dam Type

Earth

Surface Area

9800

Hydraulic Height

97

Drainage Area

1320

Nid Storage

2722100

Structural Height

103

Outlet Gates

Roller - 0, Vertical Lift - 0

Hazard Potential

High

Foundations

Soil

Nid Height

103
       
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.