Dresser No. 11 Reservoir Report
Last Updated: January 12, 2026
Dresser No.
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Summary
11, also known as Dresser #11 Tailings Pond Dam, is a privately owned structure located in Fletcher, Missouri. This dam, designed by J. Cook, was completed in 1975 and stands at a height of 90 feet with a structural height of 87 feet. With a primary purpose of containing tailings, the dam has a storage capacity of 533 acre-feet and serves a drainage area of 370 acres.
The dam's spillway type is uncontrolled with a width of 20 feet, and it has a high hazard potential rating. Despite this, the condition assessment in 2007 reported the structure to be in satisfactory condition. The last inspection in August 2016 indicated that the dam is inspected every two years, meeting state regulations for permitting, inspection, and enforcement.
Located along the TR to Big River, Dresser No. 11 poses a moderate risk, and while there are no associated structures or locks, the dam's maximum discharge capacity is 4200 cubic feet per second. With its stone core and soil foundation, this dam plays a crucial role in managing water resources in the area, highlighting the intersection of water resource management and climate impact assessment for enthusiasts in the field.
Year Completed |
1975 |
Dam Length |
500 |
Dam Height |
90 |
River Or Stream |
TR TO BIG RIVER |
Primary Dam Type |
Other |
Surface Area |
16 |
Drainage Area |
370 |
Nid Storage |
533 |
Structural Height |
87 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
90 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big River Near Richwoods
|
142cfs |
Big River Below Desloge
|
39cfs |
Big River At Byrnesville
|
139cfs |
Big River At Irondale
|
25cfs |
Meramec River Near Sullivan
|
343cfs |
Meramec River At Pacific
|
520cfs |
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.
Dresser No. 11