Woodland Lake Reservoir Report

Last Updated: December 6, 2025

Woodland Lake, located in St.


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Summary

Clair, Missouri, is a privately owned reservoir with a low hazard potential and a moderate risk assessment rating. The dam is a buttress type structure with a height of 29 feet and a length of 620 feet, creating a storage capacity of 155 acre-feet. The reservoir covers a surface area of 13 acres and has a drainage area of 1020 acres, with a normal storage capacity of 125 acre-feet.

Despite being privately owned and not state regulated, Woodland Lake plays a crucial role in managing the flow of Greens Creek and mitigating potential flooding in the region. The dam features an uncontrolled spillway with a width of 35 feet and outlet gates that are also uncontrolled. The reservoir has not been rated for its condition assessment, inspection frequency, or emergency action plan preparedness, indicating a need for further evaluation and risk management measures.

Climate and water resource enthusiasts may appreciate the unique features of Woodland Lake and its importance in the local hydrological system. The reservoir provides a recreational and environmental asset for the community while also serving as a potential risk factor that requires ongoing monitoring and maintenance to ensure the safety of surrounding areas. Understanding the infrastructure and risk assessment of Woodland Lake can contribute to informed decision-making and sustainable water resource management practices in the region.

Dam Length

620

Dam Height

29

River Or Stream

GREENS CREEK

Surface Area

13

Drainage Area

1020

Nid Storage

155

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

29
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.