Summary
Constructed in 1989, this earth dam stands at a structural height of 80 feet with a hydraulic height of 73.8 feet, providing a maximum storage capacity of 1756 acre-feet. With a surface area of 55 acres and a drainage area of 0.43 square miles, Crystal Lake serves as a significant water resource in the region.
The dam's spillway type is uncontrolled, and it has been assessed to have a significant hazard potential but is currently in satisfactory condition as of the last inspection in February 2020. The risk assessment for the dam is moderate, with a designated risk rating of 3. The reservoir's primary purpose and associated structures are not specified, but its normal storage capacity is 1382 acre-feet. Despite the moderate risk level, Crystal Lake remains a notable feature for water resource and climate enthusiasts in the area.
While Crystal Lake may not have a designated emergency action plan or inundation maps prepared, its operational status and inspection schedule indicate that it is regularly monitored and maintained. The dam does not have any associated locks or outlet gates, and its location along Tribbeaver Creek adds to its importance in the local watershed. With its satisfactory condition and moderate risk level, Crystal Lake stands as a vital water resource under the oversight of the Tennessee Safe Dams Program, offering both recreational opportunities and a valuable source of water for the region.
Year Completed |
1989 |
Dam Length |
810 |
River Or Stream |
TRIBBEAVER CREEK |
Primary Dam Type |
Earth |
Surface Area |
55 |
Hydraulic Height |
73.8 |
Drainage Area |
0.43 |
Nid Storage |
1756 |
Structural Height |
80 |
Outlet Gates |
None |
Hazard Potential |
Significant |
Nid Height |
80 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Piney River At Vernon
|
94cfs |
Duck River At Hwy 100 At Centerville
|
1470cfs |
Duck River Above Hurricane Mills
|
1950cfs |
Buffalo River Below Lobelville
|
514cfs |
Copperas Branch Near Kingfield
|
1cfs |
Yellow Creek At Ellis Mills
|
39cfs |
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.
Crystal Lake