Saganashkee Slough 6 Dam Reservoir Report

Last Updated: December 5, 2025

Saganashkee Slough 6 Dam, located in Cook County, Illinois, is a significant earth dam primarily designed for recreational purposes.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1948 by WARREN & VAN PRAAG & C. S. ENGINEER, this dam stands at a height of 7 feet and spans a length of 415 feet along the TRIB CALUMET SAG CHANNEL. With a storage capacity of 2375 acre-feet, it serves as a crucial water resource for the region, particularly for recreational activities in the surrounding areas.

Managed by the local government, the dam is regulated and inspected by the Illinois Department of Natural Resources (IDNR) to ensure its structural integrity and safety. Despite being rated as having a significant hazard potential, the current condition assessment is not available, indicating a need for further evaluation and maintenance. The dam's risk assessment is classified as high, highlighting the importance of implementing effective risk management measures to mitigate potential threats and ensure the safety of the surrounding communities.

As a key infrastructure in the region, Saganashkee Slough 6 Dam plays a vital role in water management and conservation efforts. Its association with the TRIB CALUMET SAG CHANNEL underscores its significance in the overall hydrological landscape of Illinois. With a focus on recreation, this dam serves as a valuable resource for outdoor enthusiasts and wildlife alike, embodying the intersection of water resource management and environmental conservation in the area.

Year Completed

1948

Dam Length

415

Dam Height

7

River Or Stream

TRIB CALUMET SAG CHANNEL

Primary Dam Type

Earth

Nid Storage

2375

Outlet Gates

None

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

7
       
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.