Littell #3 Reservoir Report

Last Updated: December 5, 2025

Littell #3, located in Grundy, Tennessee, is a privately owned earth dam constructed in 1987 on the Big Fiery Gizzard Creek.


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Summary

This dam, with a hydraulic height of 11.6 feet and a structural height of 13 feet, serves the primary purpose of "Other" and has a maximum storage capacity of 45 acre-feet. The dam covers a surface area of 7 acres and has a drainage area of 0.2 square miles.

Managed by the Tennessee Safe Dams Program, Littell #3 has a significant hazard potential but is currently in satisfactory condition as of the last inspection in September 2019. The dam has a moderate risk assessment rating of 3 and is subject to regular inspections, with an inspection frequency of 2 times per year. Despite being uncontrolled, the spillway type for Littell #3 is listed as "Uncontrolled," emphasizing the need for careful monitoring and maintenance to ensure the safety of the surrounding area and water resources.

Overall, Littell #3 stands as a crucial water management structure in Tennessee, showcasing the importance of effective regulation and inspection protocols to mitigate potential risks and ensure the structural integrity of dams in the region. Water resource and climate enthusiasts will find interest in the detailed data provided for Littell #3, highlighting the intersection of human infrastructure with natural water systems and the ongoing efforts to balance water management with environmental preservation.

Year Completed

1987

Dam Length

260

River Or Stream

BIG FIERY GIZZARD CREEK

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

11.6

Drainage Area

0.2

Nid Storage

45

Structural Height

13

Outlet Gates

None

Hazard Potential

Significant

Nid Height

13
       
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.
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