Siem Lake Dam

St. Charles County, Missouri (near AUGUSTA)

River/Stream: TR-MISSOURI RIVER

Significant Hazard

Failure could cause economic loss or disruption

Key Facts

Dam Type
Earth
Height
23 ft
Dam Length
600 ft
Reservoir Storage
135 acre-ft
Year Completed
1973
Primary Purpose
Flood Risk Reduction
Owner Type
Private
Max Discharge
1,200 cfs

Condition Assessment

Not Rated

Hazard Classification: Significant — This describes the potential consequences of dam failure, not the likelihood of failure.

Condition Assessment: Not Rated — This describes the current physical condition of the dam based on the most recent inspection.

Location

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Quick Stats

NID ID
MO31427
State
Missouri (MO)
Coordinates
38.58082, -90.94365
Age
53 years

Nearby Dams

External Resources

Data sourced from the National Inventory of Dams (NID). Information may not reflect the most current status of this dam. Hazard classification reflects potential consequences of failure, not the likelihood of failure or the current condition.