Springer-Sharon Site Ca-33-H-55-1 Reservoir Report
Nearby: Theusen Lake Dam David Jones Dam
Last Updated: December 12, 2025
The Springer-Sharon Site Ca-33-H-55-1, also known as the Norman Gibson Structure, is a local government-owned dam located in Chillicothe, Missouri.
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Summary
Built in 1977, this Earth dam serves the primary purpose of grade stabilization along the Thompson River. With a height of 30 feet and a length of 320 feet, the dam has a storage capacity of 30 acre-feet and covers a surface area of 21 acres.
Despite being categorized as a low hazard potential structure, the dam has a moderate risk assessment rating. It features an uncontrolled spillway with a width of 10 feet and has a maximum discharge capacity of 79 cubic feet per second. The condition assessment of the dam is currently marked as "Not Rated," with no recent inspection date available. The structure has not been modified over the years and does not have any outlet gates or associated structures.
Given the important role of dams in managing water resources and mitigating the impacts of climate change, the Springer-Sharon Site Ca-33-H-55-1 stands as a key infrastructure contributing to the protection of the surrounding area from potential flooding and erosion. As water resource and climate enthusiasts continue to monitor and assess the condition of such structures, the Springer-Sharon Site serves as a valuable asset in maintaining the stability and resilience of the Thompson River watershed in Missouri.
Year Completed |
1977 |
Dam Length |
320 |
Dam Height |
30 |
River Or Stream |
TR-THOMPSON RIVER |
Primary Dam Type |
Earth |
Surface Area |
21 |
Hydraulic Height |
30 |
Drainage Area |
280 |
Nid Storage |
30 |
Structural Height |
32 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Thompson River At Trenton
|
143cfs |
East Fork Big Creek Near Bethany
|
4cfs |
Grand River Near Gallatin
|
76cfs |
Medicine Creek Near Laredo
|
20cfs |
Thompson River At Davis City
|
22cfs |
Grand River At Chillicothe
|
361cfs |
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.
Springer-Sharon Site Ca-33-H-55-1