Johnston Lake Ms00571 Dam Reservoir Report
Last Updated: December 5, 2025
Johnston Lake Ms00571 Dam is a private-owned structure located in Pike, Mississippi, serving primarily for recreational purposes.
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Summary
This Earth dam with a buttress core stands at a height of 8 feet and has a storage capacity of 56 acre-feet. The dam is regulated by the Mississippi Department of Environmental Quality and undergoes regular inspections and enforcement to ensure its safe operation.
Despite its low hazard potential, the dam is classified as having a moderate risk level, indicating a need for ongoing risk management measures. The dam features an uncontrolled spillway and is not currently rated for its condition. While it has not been modified in recent years, there is no emergency action plan in place, highlighting a potential area for improvement in emergency preparedness. The dam's location and design make it an intriguing site for water resource and climate enthusiasts interested in the intersection of infrastructure and conservation in the region.
Dam Height |
8 |
Nid Storage |
56 |
Hazard Potential |
Low |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Tangipahoa River At Osyka
|
478cfs |
Bogue Chitto Nr Tylertown
|
578cfs |
Tickfaw River At Liverpool
|
44cfs |
Homochitto River At Eddiceton
|
168cfs |
Amite River Near Darlington
|
267cfs |
Homochitto River At Rosetta
|
2130cfs |
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.
Johnston Lake Ms00571 Dam