Summary
Built in 1954, this earth dam stands at a height of 19.5 feet with a hydraulic height of 15.5 feet. It has a storage capacity of 160 acre-feet and serves a primary purpose that is not specified in the data. The dam is regulated by the Tennessee Safe Dams Program and undergoes regular inspections, with the last one conducted in July 2020.
With a high hazard potential and a moderate risk assessment rating, Otter poses a significant risk to the surrounding area in the event of a failure. Despite its condition being labeled as "Not Rated", the dam has not been assessed for its current state. There is no Emergency Action Plan (EAP) in place, and it is unclear if the dam meets guidelines for such preparedness. The lack of inundation maps and risk management measures further highlight the need for increased attention to the safety and maintenance of Otter.
For water resource and climate enthusiasts, Otter presents a case study in the importance of proactive dam management and emergency preparedness. With its location in a populated area and the potential for significant consequences in the event of a breach, it is crucial for the owners and regulators to prioritize regular inspections, condition assessments, and the development of an effective EAP. By addressing the identified risks and implementing necessary measures, the safety and resilience of Otter can be enhanced, ensuring the protection of both the dam infrastructure and the communities downstream.
Year Completed |
1954 |
Dam Length |
440 |
River Or Stream |
LOOSAHATCHIE RIVER |
Primary Dam Type |
Earth |
Surface Area |
15 |
Hydraulic Height |
15.5 |
Drainage Area |
0.18 |
Nid Storage |
160 |
Structural Height |
19.5 |
Outlet Gates |
None |
Hazard Potential |
High |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Otter
Great View Drive North North Memphis