North Lake Conservancy District Dam Reservoir Report

Last Updated: December 5, 2025

The North Lake Conservancy District Dam, also known as Prince's North Lake Dam, is a key water management infrastructure in Johnson County, Indiana.


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Summary

Built in 1952, this earth dam stands at a height of 42 feet and serves primarily for recreation purposes, with a storage capacity of 366 acre-feet and a surface area of 22.7 acres. The dam overlooks an unnamed tributary of Mud Creek, providing a picturesque backdrop for outdoor activities.

Managed by the local government, the North Lake Conservancy District Dam is regulated by the Indiana Department of Natural Resources and undergoes regular inspections to ensure its structural integrity. With a high hazard potential but a satisfactory condition assessment as of 2010, the dam plays a crucial role in flood control and water supply management for the surrounding area. Despite its age, the dam remains a focal point for water resource and climate enthusiasts seeking to understand the intersection of infrastructure development and environmental conservation in the region.

With its moderate risk assessment and uncontrolled spillway type, the North Lake Conservancy District Dam presents a unique case study for those interested in risk management and emergency response planning for dams. While it currently lacks an Emergency Action Plan (EAP) and updated inundation maps, the dam's location in a populated area underscores the importance of proactive measures to mitigate potential risks. As climate change continues to impact water resources, the North Lake Conservancy District Dam serves as a reminder of the ongoing need for sustainable infrastructure solutions to adapt to changing environmental conditions.

Year Completed

1952

Dam Length

350

Dam Height

42

River Or Stream

UNNAMED TRIBUTARY MUD CREEK

Primary Dam Type

Earth

Surface Area

22.7

Hydraulic Height

33

Drainage Area

0.72

Nid Storage

366

Structural Height

42

Outlet Gates

None

Hazard Potential

High

Nid Height

42
       
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.