Longview Lake Dam Lower Reservoir Report

Last Updated: December 5, 2025

Longview Lake Dam Lower, located in Raleigh, North Carolina, is a local government-owned structure primarily used for recreation purposes.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1945, this earth dam stands at a structural height of 20 feet with a hydraulic height of 14 feet. It has a storage capacity of 143 acre-feet and serves a drainage area of 736 square miles, providing vital water resource management in the region.

With a high hazard potential, Longview Lake Dam Lower underwent its last inspection in December 2020, which assessed its condition as satisfactory. The dam poses a significant risk in case of failure, highlighting the importance of regular maintenance and monitoring. Despite its age, the structure continues to serve its purpose effectively, showcasing the resilience of engineering solutions in managing water resources and climate challenges.

The dam's emergency action plan and risk management measures are crucial components in ensuring public safety and mitigating potential risks. With state regulation by NCDEQ's Dam Safety Program, Longview Lake Dam Lower remains a key asset in the region's water infrastructure network. As climate change impacts water resources, the maintenance and upkeep of such structures become paramount in safeguarding communities and enhancing resilience in the face of environmental challenges.

Year Completed

1945

Dam Length

450

River Or Stream

Crabtree Creek-Tr

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

14

Drainage Area

736

Nid Storage

143

Structural Height

20

Hazard Potential

High

Nid Height

20
       
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.