Hickory Creek Watershed Structure H- 9a Reservoir Report
Last Updated: December 5, 2025
Hickory Creek Watershed Structure H-9a, located in Newton County, Missouri, is a vital earth dam constructed in 2000 by the USDA NRCS to reduce flood risks in the area.
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Summary
This impressive structure stands at a height of 33.9 feet and has a capacity of 210 acre-feet, providing essential flood protection to the surrounding 70.4 square miles of drainage area. With a maximum discharge capacity of 3186 cubic feet per second, this dam plays a crucial role in safeguarding the local community from potential hazards.
Despite its high hazard potential, the condition assessment of Hickory Creek Watershed Structure H-9a remains unrated, with its last inspection conducted in September 2002. The dam features an uncontrolled spillway and outlet gates, serving its primary purpose of flood risk reduction effectively. Considering its moderate risk assessment rating and the absence of an Emergency Action Plan, there is a need for continuous monitoring and maintenance to ensure the optimal performance of this critical infrastructure. Overall, Hickory Creek Watershed Structure H-9a stands as a testament to the collaborative efforts of various agencies in safeguarding water resources and enhancing climate resilience in the region.
Year Completed |
2000 |
Dam Length |
650 |
Dam Height |
33.9 |
River Or Stream |
TR-HICKORY |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
33.9 |
Drainage Area |
70.4 |
Nid Storage |
210 |
Structural Height |
38 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
38 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Shoal Creek Above Joplin
|
151cfs |
Buffalo Creek At Tiff City
|
13cfs |
Indian Creek Near Lanagan
|
68cfs |
Elk River Near Tiff City
|
268cfs |
Big Sugar Creek Near Powell
|
39cfs |
Spring River Near Quapaw
|
455cfs |
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.
Hickory Creek Watershed Structure H- 9a