Piper Glen Dam C Reservoir Report

Last Updated: December 5, 2025

Piper Glen Dam C, also known as Lake Cal, is a privately owned recreational dam located in Charlotte, North Carolina.


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Summary

Built in 1994, this earth dam stands at a hydraulic height of 30 feet with a structural height of 34 feet. It has a capacity of 41 acre-feet and a surface area of 3 acres, providing ample space for water activities such as fishing and boating.

Despite being privately owned, Piper Glen Dam C is subject to state inspections to ensure its safety and compliance with regulations. The dam has a significant hazard potential but is currently assessed to be in fair condition as of the last inspection in October 2020. With a primary purpose of recreation, this dam offers a picturesque setting for outdoor enthusiasts to enjoy nature in the heart of Mecklenburg County.

For water resource and climate enthusiasts, Piper Glen Dam C serves as a valuable asset for both recreation and water management in the area. Its presence along Four Mile Creek-Trib contributes to the local ecosystem while providing a safe and enjoyable environment for visitors. As a well-maintained structure with a designated inspection frequency, Piper Glen Dam C exemplifies the importance of balancing human needs with environmental stewardship in the management of water resources.

Year Completed

1994

Dam Length

280

River Or Stream

Four Mile Creek-Trib

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

30

Nid Storage

41

Structural Height

34

Hazard Potential

Significant

Nid Height

34
       
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.