Blankenship Reservoir Report
Nearby: Tatlock Fort Pillow
Last Updated: December 12, 2025
Blankenship is a private dam located in Pleasant Grove, Tennessee, along the Tribhatchie River.
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Summary
Built in 1960, this Earth-type dam stands at a structural height of 19.2 feet and has a hydraulic height of 17.1 feet, with a length of 280 feet. The dam has a storage capacity of 88 acre-feet and serves primarily for low hazard potential purposes. It is under the jurisdiction of the state of Tennessee and is not regulated by any state agency.
Despite its low hazard potential, Blankenship has been classified with a moderate risk level of 3. The dam has not been rated for its condition assessment, and the last inspection took place in November 2017, with an inspection frequency of 5 years. The dam does not have an Emergency Action Plan (EAP) in place, and its risk management measures are not specified. Located within the Memphis District, Blankenship does not have any federal agency ownership or funding associated with it, highlighting its private ownership status.
Water resource and climate enthusiasts interested in Blankenship will find this private dam a unique site to study due to its historical significance and engineering characteristics. With a tranquil surface area of 9.8 acres and a drainage area of 0.09 square miles, Blankenship provides a valuable opportunity for research on small-scale dam structures and their impact on local ecosystems. The presence of the Tribhatchie River adds to the ecological richness of the area, making Blankenship a noteworthy location for further exploration and appreciation of water resources in Tennessee.
Year Completed |
1960 |
Dam Length |
280 |
River Or Stream |
TRIBHATCHIE RIVER |
Primary Dam Type |
Earth |
Surface Area |
9.8 |
Hydraulic Height |
17.1 |
Drainage Area |
0.09 |
Nid Storage |
88 |
Structural Height |
19.2 |
Outlet Gates |
None |
Hazard Potential |
Low |
Nid Height |
19 |
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.
Blankenship