Rohlfing Dam - Mononame 408 Reservoir Report
Nearby: Byington Lake Dam Dill, Lee Dam
Last Updated: December 8, 2025
Rohlfing Dam - Mononame 408, located in Cooper Hill, Missouri, is a private-owned structure built for recreational purposes.
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Summary
Completed in 1962, this earth dam with a buttress core stands at 23 feet high and has a storage capacity of 74 acre-feet. Despite its primary purpose being recreation, the dam is classified as high hazard potential due to its location on TR-Pointers Creek in Osage County.
With a drainage area of 94 square miles, Rohlfing Dam serves as a crucial water resource in the region, providing a normal storage capacity of 45 acre-feet. The dam's condition is currently not rated, as the last inspection in 1978 did not assess its structural integrity. Despite lacking recent assessments, the dam remains a significant feature in the area's landscape, attracting water resource and climate enthusiasts interested in the conservation and management of water bodies in Missouri.
Year Completed |
1962 |
Dam Height |
23 |
River Or Stream |
TR-POINTERS CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
94 |
Nid Storage |
74 |
Structural Height |
23 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Gasconade River Near Rich Fountain
|
960cfs |
Maries River At Westphalia
|
16cfs |
Bourbeuse River Near High Gate
|
1cfs |
Moreau River Near Jefferson City
|
61cfs |
Osage River Below St. Thomas
|
1200cfs |
Missouri River At Jefferson City
|
32600cfs |
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.
Rohlfing Dam - Mononame 408