East Lake Estates 2 Dam Reservoir Report

Last Updated: December 19, 2025

East Lake Estates 2 Dam, also known as East Lake Development, is a privately owned structure located in Brown County, Illinois.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 2001, this earth dam stands at a height of 54.5 feet and has a length of 340 feet, serving primarily for recreational purposes. Situated on TRIB WEST CREEK, this dam has a normal storage capacity of 165 acre-feet and a maximum discharge rate of 997 cubic feet per second.

Managed by the Illinois Department of Natural Resources (IDNR), East Lake Estates 2 Dam has a low hazard potential and is classified as having a moderate risk level. Although the condition assessment is not available, the last inspection in September 2014 revealed the structure to be in good standing. With no outlet gates and an uncontrolled spillway, this dam plays a crucial role in maintaining the surface area of 10.28 acres and providing recreational opportunities for the surrounding community.

Despite its modest size, East Lake Estates 2 Dam serves as a vital component in the local water resource management system. With its strategic location and sturdy design by GREENE & BRADFORD, INC., this dam exemplifies the importance of private ownership in maintaining and protecting water resources for both recreational and environmental purposes in Illinois.

Year Completed

2001

Dam Length

340

Dam Height

54.5

River Or Stream

TRIB WEST CREEK

Primary Dam Type

Earth

Surface Area

10.28

Drainage Area

0.25

Nid Storage

230

Outlet Gates

None

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

55
       
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.