Proffits Dam At Loomis Lake Reservoir Report

Last Updated: December 5, 2025

Proffits Dam At Loomis Lake, located in Porter, Indiana, serves as a crucial water supply source for the surrounding area.


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Summary

Constructed in 1940, this earth dam stands at a height of 17 feet and spans 200 feet in length. With a storage capacity of 485 acre-feet, the dam primarily supports water supply purposes and also offers recreational opportunities for the community.

Managed by a public utility, this dam is regulated by the Indiana Department of Natural Resources, ensuring that it meets state permitting, inspection, and enforcement requirements. Despite its age, Proffits Dam has been assessed as satisfactory in condition, with a high hazard potential due to its location on an unnamed tributary of Flint Lake. The dam's spillway, an uncontrolled type, has a width of 200 feet, providing an essential safety feature in case of excess water flow.

While the risk assessment indicates moderate risk, the dam has not had an Emergency Action Plan (EAP) prepared or updated recently. With a focus on maintaining water supply and ensuring the safety of the surrounding community, ongoing monitoring and management measures are essential for the continued operation and resilience of Proffits Dam At Loomis Lake.

Year Completed

1940

Dam Length

200

Dam Height

17

River Or Stream

UNNAMED TRIBUTARY FLINT LAKE

Primary Dam Type

Earth

Surface Area

49.72

Hydraulic Height

17

Drainage Area

0.6

Nid Storage

485

Structural Height

17

Outlet Gates

None

Hazard Potential

High

Foundations

Soil

Nid Height

17
       
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.