New Pittsfield Lake 1 Dam Reservoir Report

Last Updated: December 20, 2025

Located in Pike, Illinois, the New Pittsfield Lake 1 Dam, also known as Troutner Dam, was completed in 1961 and primarily serves for recreation and water supply purposes.


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Summary

This earth dam stands at a height of 48 feet and stretches 690 feet in length, with a maximum storage capacity of 6,121 acre-feet. The dam, situated on Blue Creek, is regulated by the Illinois Department of Natural Resources and is under state jurisdiction, with inspections and enforcement measures in place to ensure its safety.

With a low hazard potential and moderate risk assessment, the New Pittsfield Lake 1 Dam is designed with an uncontrolled spillway and outlet gates. The dam's structural integrity is periodically inspected, the most recent being in November 2019, with a designated inspection frequency of 5 years. Despite the condition assessment not being available, the dam's risk management measures are in place to mitigate any potential risks. As a vital water resource infrastructure in the region, the dam continues to play a crucial role in providing recreational opportunities and water supply for the community.

Year Completed

1961

Dam Length

690

Dam Height

48

River Or Stream

BLUE CREEK

Primary Dam Type

Earth

Nid Storage

6121

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

48
       
Seasonal Comparison

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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.