Svcd Structure No. F-6 (Collins Lake) Reservoir Report

Last Updated: December 18, 2025

Svcd Structure No.


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Summary

F-6, also known as Collins Lake, is a vital flood risk reduction structure located in French Lick, Indiana. Owned by the local government and regulated by the Indiana Department of Natural Resources, this earth dam stands at a height of 45 feet and was completed in 1965. With a storage capacity of 186 acre-feet, Collins Lake serves to protect the surrounding area from potential flooding events.

The dam's spillway, with a width of 50 feet, allows for a maximum discharge of 1105 cubic feet per second. Despite its fair condition assessment in 2006, Collins Lake poses a high hazard potential due to its proximity to the unnamed tributary of French Lick Creek. Regular inspections, conducted every two years, ensure the structural integrity of the dam and its ability to mitigate flood risks effectively.

With a moderate risk assessment rating of 3, Collins Lake remains a crucial component of the flood risk reduction infrastructure in Orange County, Indiana. As water resource and climate enthusiasts, understanding the design and function of structures like Svcd F-6 is essential in managing and protecting our natural resources in the face of changing environmental conditions.

Year Completed

1965

Dam Length

405

Dam Height

45

River Or Stream

UNNAMED TRIBUTARY FRENCH LICK CREEK

Primary Dam Type

Earth

Surface Area

2.3

Hydraulic Height

42

Drainage Area

0.56

Nid Storage

186

Structural Height

45

Outlet Gates

Slide (sluice gate)

Hazard Potential

High

Foundations

Rock, Soil

Nid Height

45
       
Seasonal Comparison

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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.