Middle Fork of Anderson River - No. 23

Middle Fork of Anderson River - No. 23 is an earth dam located in Perry County, Indiana, built in 1992. It carries a Significant hazard potential classification and has a fair condition assessment.

Hazard potentialSignificantFailure could cause major damage
ConditionFair2nd of 4 ratings
Emergency action planNone on file
Last inspection03/31/2017
Height37 ft
Built199234 years ago

Dam profile

NID height · 37 ft
37 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

37 ft tall and 450 ft long, taller than 83% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.

About Middle Fork of Anderson River - No. 23

The primary purpose of Middle Fork of Anderson River - No. 23 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Department of Natural Resources (state). It impounds the Coon Branch near Bristow.

The dam stands 37 feet tall and stretches 450 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 227 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1992, the structure is 34 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 03/31/2017.

At 37 feet, this dam is taller than 83% of dams nationwide.

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Location

StateIndiana
CountyPerry
Nearest CityBristow
River/StreamCoon Branch
Coordinates38.15718, -86.71189

Physical Characteristics

Dam TypeEarth
NID Height37 ft
Dam Height37 ft
Dam Length450 ft
Year Completed1992 (34 years old)

Storage & Hydraulics

NID Storage227 acre-ft
Max Storage227 acre-ft
Surface Area5 acres
Drainage Area0 sq mi
Spillway TypeNone

Ownership & Safety

PurposeFlood Risk Reduction
OwnerDepartment of Natural Resources
Owner TypeState
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection03/31/2017
Emergency Action PlanNo

Identifiers

NID IDIN03918
Federal IDIN03918
More InfoState Dam Safety Program