Idlewilde Acres Dam Reservoir Report

Last Updated: December 6, 2025

Idlewilde Acres Dam, located in Adams County, Nebraska, stands as a testament to local government's commitment to water resource management and climate resilience.


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Summary

Completed in 1983, this earth dam on TR-Thirty-Two Mile Creek serves primarily for recreational purposes, offering a serene escape in the midst of nature. With a maximum storage capacity of 188.4 acre-feet and a surface area of 13 acres, the dam provides a tranquil setting for outdoor enthusiasts to enjoy.

Managed by the Nebraska Department of Natural Resources, Idlewilde Acres Dam has a low hazard potential and is currently rated in fair condition. Regular inspections ensure its structural integrity and safety, with the last assessment conducted in May 2019. The dam's design, with a height of 20.25 feet and hydraulic height of 19.3 feet, showcases a blend of stone core and soil foundation, highlighting the engineering prowess involved in its construction.

Situated within the Omaha District and under the jurisdiction of Congressional District 03, Nebraska, Idlewilde Acres Dam represents a harmonious balance between human recreation and environmental conservation. As climate change continues to impact water resources, the careful management and monitoring of dams like Idlewilde Acres become increasingly crucial in safeguarding both communities and ecosystems for generations to come.

Year Completed

1983

Dam Length

485

Dam Height

20.25

River Or Stream

TR-THIRTY-TWO MILE CREEK

Primary Dam Type

Earth

Surface Area

13

Hydraulic Height

19.3

Drainage Area

0.7

Nid Storage

188.4

Structural Height

21.5

Hazard Potential

Low

Foundations

Soil

Nid Height

22
       
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.