Maynes Grove West Dam Reservoir Report

Nearby: Noelck Dam

Last Updated: December 13, 2025

Maynes Grove West Dam, located in Cedar Falls, Iowa, is a local government-owned structure designed by USDA NRCS for the primary purpose of recreation.


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Summary

Completed in 1992, this earth dam stands at 27 feet high and spans 433 feet in length, creating a reservoir with a storage capacity of 78 acre-feet. The dam, situated on TR- Maynes Creek, is regulated by the Iowa Department of Natural Resources and is subject to state permitting, inspection, and enforcement.

Despite its low hazard potential and moderate risk assessment, Maynes Grove West Dam has not been rated for its condition. With an uncontrolled spillway type and no outlet gates, the dam has a surface area of 6.1 acres and serves a drainage area of 0.25 square miles. While there are no associated structures or locks, the dam's primary function as a recreational site attracts water resource and climate enthusiasts alike. As an integral part of the local landscape, Maynes Grove West Dam offers a peaceful retreat for visitors to enjoy the beauty of its surroundings and the opportunities for outdoor recreation it provides.

Year Completed

1992

Dam Length

433

Dam Height

27

River Or Stream

TR- MAYNES CREEK

Primary Dam Type

Earth

Surface Area

6.1

Drainage Area

0.25

Nid Storage

78

Hazard Potential

Low

Foundations

Soil

Nid Height

27
       
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.