Randolph Dam Reservoir Report

Last Updated: December 6, 2025

Randolph Dam, located in Van Buren, Iowa, is a privately owned structure primarily used for fire protection, stock, or as a small fish pond.


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Summary

Constructed in 2000 by NRCS, this earth dam stands at a height of 30 feet and has a length of 485 feet. With a storage capacity of 119 acre-feet and a surface area of 6.8 acres, the dam plays a crucial role in the local ecosystem and water resource management.

Managed by the Iowa Department of Natural Resources, Randolph Dam is regulated, permitted, inspected, and enforced to ensure its safety and compliance with state regulations. The dam has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. Despite its moderate risk level, the dam serves as a vital infrastructure for the surrounding area, providing essential services and contributing to the overall water resource management in the region.

Situated along the Fox River tributary, Randolph Dam is a key feature in the watershed, offering flood protection and water storage benefits. As climate change continues to impact water resources, the importance of infrastructure like Randolph Dam in safeguarding communities against extreme weather events becomes increasingly evident. With its strategic location and functional design, Randolph Dam stands as a testament to the collaboration between private ownership and state agencies in promoting sustainable water resource management practices.

Year Completed

2000

Dam Length

485

Dam Height

30

River Or Stream

TR- FOX RIVER

Primary Dam Type

Earth

Surface Area

6.8

Drainage Area

0.42

Nid Storage

119

Hazard Potential

Low

Foundations

Soil

Nid Height

30
       
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.