Middle Fork Of Anderson River - No. 7 Reservoir Report

Last Updated: December 5, 2025

Middle Fork of Anderson River - No.


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Summary

7 is a flood risk reduction structure located in Perry, Indiana, owned by the local government and designed by USDA NRCS. Completed in 1970, this earth dam stands at a height of 44 feet and has a length of 815 feet, providing a storage capacity of 15,400 acre-feet and serving the primary purpose of flood risk reduction for the Middle Fork Anderson River.

With a drainage area of 32.83 square miles, this dam has a maximum discharge capacity of 25,750 cubic feet per second and a spillway width of 100 feet. Despite its important role in mitigating flood risks, the dam is classified as having a high hazard potential with a poor condition assessment as of December 2006. The structure is inspected every two years to ensure its safety and effectiveness in protecting the surrounding area from potential flooding events.

Located in a region represented by Congressman Larry Bucshon, Middle Fork of Anderson River - No. 7 is a critical infrastructure for water resource management in the area. With its moderate risk assessment rating, stakeholders and climate enthusiasts are urged to stay informed about the condition and maintenance of this dam to ensure its continued functionality in safeguarding the community from flood events.

Year Completed

1970

Dam Length

815

Dam Height

44

River Or Stream

MIDDLE FORK ANDERSON RIVER

Primary Dam Type

Earth

Surface Area

38.99

Hydraulic Height

44

Drainage Area

32.83

Nid Storage

15400

Structural Height

44

Outlet Gates

Slide (sluice gate)

Hazard Potential

High

Foundations

Soil

Nid Height

44
       
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.