Shady Eighty Ranch Lake Dam Reservoir Report
Nearby: Emert Lake Dam Girl Scouts Dam
Last Updated: December 17, 2025
Shady Eighty Ranch Lake Dam, located in Moscow Mills, Missouri, is a state-regulated structure with a primary purpose of recreation.
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Summary
Built in 1972, this earth dam stands at a height of 39 feet and has a length of 360 feet, creating a reservoir with a storage capacity of 70 acre-feet. The dam sits on the TR-Sugar Creek river and is owned by the state of Missouri.
Despite being classified as having a high hazard potential, the dam is currently in satisfactory condition according to a 2007 assessment. It is inspected every five years, with the last inspection conducted in July 2016. While the dam has an uncontrolled spillway with a width of 10 feet, it does not have outlet gates or associated locks.
With a moderate risk level assigned to it, Shady Eighty Ranch Lake Dam serves as a vital recreational resource for the local community. Its location in Lincoln County, Missouri, provides opportunities for water-based activities and wildlife habitat preservation, making it a valuable asset in the region's water resource and climate conservation efforts.
Year Completed |
1972 |
Dam Length |
360 |
Dam Height |
39 |
River Or Stream |
TR-SUGAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
7 |
Drainage Area |
125 |
Nid Storage |
70 |
Structural Height |
39 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
39 |
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.
Shady Eighty Ranch Lake Dam