Wallys Lake Dam Reservoir Report
Last Updated: December 19, 2025
Wallys Lake Dam, located in Nelson, Missouri, was completed in 1973 and serves the primary purpose of recreation.
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Summary
This private-owned earth dam has a height of 30 feet and a storage capacity of 96 acre-feet. With a surface area of 6 acres and a drainage area of 57 square miles, the dam is situated on the TR-Salt Fork river. Despite being unregulated by the state and having a low hazard potential, Wallys Lake Dam provides essential recreational opportunities for the surrounding community.
Managed by the Kansas City District of the US Army Corps of Engineers, Wallys Lake Dam has not been rated for its condition assessment. The dam does not have a spillway and is not equipped with outlet gates. Although the dam is not considered to be high-risk, emergency action plans and inundation maps have not been prepared. With its picturesque location and ample storage capacity, Wallys Lake Dam remains a vital resource for water and climate enthusiasts interested in exploring the beauty of Saline County, Missouri.
Year Completed |
1973 |
Dam Height |
30 |
River Or Stream |
TR-SALT FORK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
57 |
Nid Storage |
96 |
Structural Height |
30 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Blackwater River At Blue Lick
|
25cfs |
Missouri River At Glasgow
|
28400cfs |
Missouri River At Waverly
|
26800cfs |
Wakenda Creek At Carrollton
|
8cfs |
Missouri River At Boonville
|
29900cfs |
Mussel Fork Near Musselfork
|
12cfs |
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.
Wallys Lake Dam