Graves Lake Dam Reservoir Report
Nearby: Lowell Pierce Dam Ideker,Welton Dam
Last Updated: December 22, 2025
Graves Lake Dam, located in Atchison County, Missouri, is a privately owned structure primarily used for recreation purposes.
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Summary
The earth dam, standing at a height of 25 feet, provides a storage capacity of 67 acre-feet and covers a surface area of 5 acres. The dam overlooks the TR-Tarkio River and is managed by the Omaha District of the US Army Corps of Engineers.
Despite its high hazard potential, Graves Lake Dam has not been rated for its condition assessment. The dam does not fall under state jurisdiction or regulation, with no state permitting, inspection, or enforcement activities reported. The emergency action plan status and risk management measures for the dam remain unknown, highlighting a potential area of concern for the surrounding community and water resource enthusiasts.
As a significant recreational site in the region, Graves Lake Dam serves as a valuable resource for water and climate enthusiasts. Understanding the dam's design and operational aspects, as well as ensuring proper risk management and emergency preparedness, are essential for maintaining the safety and sustainability of this cherished water resource in Missouri.
Dam Height |
25 |
River Or Stream |
TR-TARKIO RIVER |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
159 |
Nid Storage |
67 |
Structural Height |
25 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Tarkio River At Fairfax Mo
|
62cfs |
Missouri River At Rulo
|
24800cfs |
Big Nemaha River At Falls City
|
310cfs |
Nodaway River Near Graham
|
92cfs |
Nodaway River Near Burlington Jct
|
179cfs |
Little Nemaha River At Auburn
|
82cfs |
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.
Graves Lake Dam