Hubbard Murphee Y-17a-74 Reservoir Report
Last Updated: December 5, 2025
Hubbard Murphee Y-17a-74, also known as Lowery Dam, is a key water resource infrastructure located in Tallahatchie, Mississippi.
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Summary
Constructed in 1963 by the USDA NRCS, this earth dam serves the primary purpose of flood risk reduction along the Rowland Branch. With a height of 35 feet and a hydraulic height of 25 feet, it provides crucial protection to the surrounding area, with a maximum discharge capacity of 1000 cubic feet per second.
Managed by the Mississippi Department of Environmental Quality, Hubbard Murphee Y-17a-74 is state-regulated and regularly inspected to ensure its structural integrity. The dam has a high hazard potential but is currently assessed as satisfactory, with a moderate risk level. With a storage capacity of 561 acre-feet and a drainage area of 1.23 square miles, this dam plays a vital role in water management in the region.
Despite its uncontrolled spillway and outlet gates, Hubbard Murphee Y-17a-74 has been deemed to meet regulatory guidelines and is equipped to handle emergency situations. With a solid track record of maintenance and compliance, this dam continues to be a critical asset in mitigating flood risks and ensuring water resource sustainability in the area.
Year Completed |
1963 |
Dam Length |
590 |
Dam Height |
35 |
River Or Stream |
ROWLAND BRANCH |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
25 |
Drainage Area |
1.23 |
Nid Storage |
561 |
Structural Height |
35 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yalobusha River At Grenada
|
3080cfs |
Batupan Bogue At Grenada
|
134cfs |
Tallahatchie River At Money
|
6080cfs |
Otoucalofa Creek Canal Nr Water Valley
|
25cfs |
Hotopha Creek Nr Batesville
|
13cfs |
Big Sunflower River At Clarksdale
|
58cfs |
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.
Hubbard Murphee Y-17a-74