Northridge Lakes Res. Devlop Reservoir Report

Last Updated: December 5, 2025

Northridge Lakes Reservoir Development, located in Milwaukee, Wisconsin, is a privately owned water resource managed by the Wisconsin Department of Natural Resources.


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Summary

The reservoir, completed in 1969, serves primarily for recreational purposes with a storage capacity of 300 acre-feet and a surface area of 44 acres. The dam, constructed of concrete, stands at a height of 11 feet and spans 100 feet along Beaver Creek.

Despite its fair condition assessment and high hazard potential, the reservoir is regularly inspected and maintained by state authorities to ensure public safety. The spillway is uncontrolled, and the reservoir has a maximum discharge of 740 cubic feet per second. With a drainage area of 1.1 square miles, Northridge Lakes Reservoir plays a crucial role in managing water resources in the region and providing recreational opportunities for local residents and visitors.

Years Modified

1970 - Other

Year Completed

1969

Dam Length

100

Dam Height

11

River Or Stream

Beaver Creek

Primary Dam Type

Concrete

Surface Area

44

Hydraulic Height

5

Drainage Area

1.1

Nid Storage

300

Structural Height

11

Hazard Potential

High

Nid Height

11
       
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.