Timber Lakes Estate Dam Reservoir Report

Last Updated: December 13, 2025

Timber Lakes Estate Dam, located in Scott County, Iowa, was completed in 2000 and serves multiple purposes including fire protection, stock, and recreational activities.


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Summary

This private Earth dam stands at a height of 57 feet and has a storage capacity of 46 acre-feet, with a surface area of 2.7 acres. The dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections to ensure its safety and effectiveness.

With a significant hazard potential and a moderate risk rating, Timber Lakes Estate Dam plays a crucial role in protecting the surrounding area from potential flooding and providing essential water resources. The dam is equipped with an uncontrolled spillway and soil foundation, making it an integral part of the local water management infrastructure. Despite its remote location near the Mississippi River, the dam is closely monitored and maintained to mitigate any potential risks and ensure its continued functionality for the community.

Designed by Landmark Engineering Group, Timber Lakes Estate Dam exemplifies the importance of private ownership in water resource management. This dam not only provides essential services for fire protection and livestock but also offers recreational opportunities for the local residents. As climate change continues to impact water resources, the sustainable management of dams like Timber Lakes Estate Dam becomes increasingly critical for maintaining a resilient and secure water supply for future generations.

Year Completed

2000

Dam Length

395

Dam Height

57

River Or Stream

TR- MISSISSIPPI RIVER

Primary Dam Type

Earth

Surface Area

2.7

Drainage Area

0.03

Nid Storage

46

Hazard Potential

Significant

Foundations

Soil

Nid Height

57
       
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.