Gillis Lake Dam Reservoir Report
Last Updated: December 14, 2025
Gillis Lake Dam, located in Holt County, Missouri, was completed in 1972 with the primary purpose of flood risk reduction along TR-DAVIS CREEK.
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Summary
This private earth dam stands at a height of 30 feet and has a storage capacity of 160 acre-feet, serving to mitigate potential flooding in the area. Despite its low hazard potential, the condition of the dam has not been officially assessed, indicating a need for further evaluation and maintenance.
Managed by its private owner, Gillis Lake Dam has not been regulated or inspected by the state, highlighting the importance of proactive monitoring and upkeep to ensure its effectiveness in flood control. With a normal storage capacity of 100 acre-feet and a drainage area of 1076 acres, the dam plays a crucial role in safeguarding the surrounding areas from potential water-related disasters. While it lacks certain structural details such as spillway type and outlet gates, the dam's strategic location and design make it a key asset in the region's water resource management.
As an essential component of the flood risk reduction infrastructure in Mound City, Missouri, Gillis Lake Dam serves as a vital barrier against potential water emergencies. With its historical completion in 1972 and ongoing function as a flood control measure, the dam stands as a testament to the importance of water resource management in safeguarding communities against natural disasters. As water resource and climate enthusiasts, understanding the role and condition of dams like Gillis Lake Dam is crucial in ensuring the resilience and safety of our natural environment.
Year Completed |
1972 |
Dam Height |
30 |
River Or Stream |
TR-DAVIS CREEK |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
1076 |
Nid Storage |
160 |
Structural Height |
30 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nodaway River Near Graham
|
134cfs |
Missouri River At Rulo
|
26600cfs |
Tarkio River At Fairfax Mo
|
55cfs |
Nodaway River Near Burlington Jct
|
63cfs |
One Hundred And Two River At Maryville
|
6cfs |
Big Nemaha River At Falls City
|
310cfs |
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.
Gillis Lake Dam