Johnson Lake Dam Reservoir Report
Last Updated: December 13, 2025
Johnson Lake Dam, located in Chinquapin, North Carolina, is a privately owned structure built in 1966 for irrigation purposes along Maxwell Creek.
°F
°F
mph
Wind
%
Humidity
Summary
Standing at a structural height of 17 feet and a length of 1560 feet, this earth dam provides a storage capacity of 110 acre-feet for water supply and recreational activities. Despite its low hazard potential, the dam has not been rated for its current condition as of the last inspection in October 2015.
Managed by a private owner, Johnson Lake Dam is not regulated by the state and does not require permits for operation. With a maximum discharge capacity of 33 cubic feet per second, the dam serves as a vital resource for the local community's water needs. Although lacking in certain regulatory aspects, the dam continues to play a crucial role in sustaining water resources in Duplin County, North Carolina.
Year Completed |
1966 |
Dam Length |
1560 |
River Or Stream |
Maxwell Creek |
Primary Dam Type |
Earth |
Nid Storage |
110 |
Structural Height |
17 |
Hazard Potential |
Low |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Northeast Cape Fear River Near Chinquapin
|
290cfs |
Black River Near Tomahawk
|
281cfs |
New River Near Gum Branch
|
27cfs |
Bear Creek At Mays Store
|
98cfs |
Neuse River Near Goldsboro
|
631cfs |
Cape Fear R At Lock #1 Nr Kelly
|
1370cfs |
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.
Johnson Lake Dam