Jones Spring Reservoir Report

Last Updated: December 8, 2025

Jones Spring, also known as Woodduck Pond, is a captivating water resource located in Oconto, Wisconsin.


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Summary

This Federal-owned spring serves as a vital source of water in the area, with a capacity to store up to 80 acre-feet of water. Built in 1967, this earth dam stands at a height of 10 feet and spans a length of 223 feet, with a controlled spillway width of 22 feet. Its primary purpose is classified as 'Other' and it is regulated by the state with permitting and enforcement in place.

Situated in the scenic surroundings of Suring, Jones Spring plays a crucial role in managing the flow of TR Mary Creek. With a low hazard potential but a very high risk assessment rating of 1, this water resource is monitored for safety with a 10-year inspection frequency. Despite its condition being 'Not Rated', Jones Spring continues to provide valuable water storage and control in the region, contributing to the overall water resource management efforts in Wisconsin.

Enthusiasts of water resources and climate will find Jones Spring an intriguing site to explore, with its unique design and history dating back to the 1960s. As a Federal-owned structure, it represents a blend of engineering excellence and natural beauty, offering a glimpse into the intricate balance between human intervention and environmental conservation. Visitors can appreciate the significance of this earth dam as they witness the controlled flow of water and its impact on the surrounding ecosystem, making Jones Spring a must-visit destination for those passionate about water resource management and climate sustainability.

Year Completed

1967

Dam Length

223

Dam Height

10

River Or Stream

TR MARY CREEK

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

9

Drainage Area

1.2

Nid Storage

80

Structural Height

10

Hazard Potential

Low

Nid Height

10
       
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.