Pratt Dam Reservoir Report
Nearby: Lindley Lake Dam Hammond Lake Dam
Last Updated: December 18, 2025
Pratt Dam, located in Gentry County, Missouri, serves primarily for grade stabilization along the TR-Walnut Fork river.
°F
°F
mph
Wind
%
Humidity
Summary
This privately owned dam, completed in 1989, stands at a height of 30 feet and spans 540 feet in length. The dam's purpose is supported by a storage capacity of 167 acre-feet, with a normal storage of 64 acre-feet. Despite its low hazard potential and moderate risk assessment, the dam's condition remains unrated, suggesting the need for further evaluation.
With an uncontrolled spillway and no outlet gates, Pratt Dam operates as an earth dam with a stone core foundation, designed to withstand the hydraulic forces of the river. The dam's location, within the jurisdiction of the Rock Island District, is not state-regulated or permitted, indicating a unique level of independence in its operations. The dam's risk management measures and emergency action plan status remain undisclosed, highlighting potential areas for improvement in ensuring the safety and resilience of this critical infrastructure.
For water resource and climate enthusiasts, Pratt Dam presents a fascinating case study in private dam ownership and management. Its role in grade stabilization, coupled with its uncontrolled spillway and moderate risk assessment, underscores the importance of ongoing monitoring and maintenance to mitigate potential hazards. As climate change continues to impact water resources, understanding the condition and operational status of dams like Pratt Dam is crucial for ensuring the safety and sustainability of our water infrastructure in the face of evolving environmental challenges.
Year Completed |
1989 |
Dam Length |
540 |
Dam Height |
30 |
River Or Stream |
TR-WALNUT FORK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
29 |
Drainage Area |
51.2 |
Nid Storage |
167 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Pratt Dam