Jones Dam Reservoir Report

Last Updated: December 5, 2025

Jones Dam, located in Santa Rosa, Florida, is a private earth dam designed by the USDA NRCS and completed in 1968 for the primary purpose of recreation.


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Summary

With a height of 20 feet and a length of 590 feet, the dam holds a maximum storage capacity of 99 acre-feet and serves the Fish and Wildlife Pond and recreational needs of the area. The dam is situated on the TR-Cobb Branch river and covers a surface area of 5 acres with a drainage area of 0.15 square miles.

Despite being classified as low hazard potential, Jones Dam has not been assessed for its current condition as of the last inspection in 1994. The dam features a spillway width of 100 feet and a maximum discharge capacity of 850 cubic feet per second. While the dam does not have outlet gates or associated structures, it remains a vital resource for the community. With its serene surroundings and recreational opportunities, Jones Dam continues to be a popular destination for water resource and climate enthusiasts seeking to enjoy the beauty of nature in Santa Rosa, Florida.

Year Completed

1968

Dam Length

590

Dam Height

20

River Or Stream

TR-COBB BRANCH

Primary Dam Type

Earth

Surface Area

5

Drainage Area

0.15

Nid Storage

99

Hazard Potential

Low

Foundations

Soil

Nid Height

20
       
Seasonal Comparison

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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.