Big Spring Subwatershed Structure R-7-16 Dam Reservoir Report
Last Updated: December 6, 2025
The Big Spring Subwatershed Structure R-7-16 Dam, also known as Dam R-7-16, is a crucial flood risk reduction infrastructure located in Marshall, Mississippi.
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Summary
Built in 1958 by USDA NRCS, this earth dam stands at a height of 28 feet and has a storage capacity of 58 acre-feet. It serves the primary purpose of flood risk reduction for the TR- BIG SPRING river/stream and is regulated by the Mississippi Department of Environmental Quality.
With a low hazard potential and a moderate risk assessment rating, the Big Spring Subwatershed Structure R-7-16 Dam plays a vital role in protecting the surrounding area from potential flooding events. Although its condition is currently not rated, the dam is regularly inspected, permitted, and enforced by the state regulatory agency to ensure its effectiveness and safety. For water resource and climate enthusiasts, this dam serves as a prime example of sustainable water management practices in addressing the challenges posed by extreme weather events.
Year Completed |
1958 |
Dam Height |
28 |
River Or Stream |
TR- BIG SPRING |
Primary Dam Type |
Earth |
Drainage Area |
0.13 |
Nid Storage |
58 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wolf River At Lagrange
|
227cfs |
Wolf River At Rossville
|
497cfs |
Little Tallahatchie River At Etta
|
156cfs |
Coldwater River Nr Olive Branch
|
104cfs |
Nonconnah Creek Near Germantown
|
88cfs |
Wolf River At Germantown
|
609cfs |
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.
Big Spring Subwatershed Structure R-7-16 Dam