North Broadway Low Head Dam

North Broadway Low Head Dam is a concrete dam located in Franklin County, Ohio, built in 1969. It carries a Significant hazard potential classification and has a fair condition assessment.

About North Broadway Low Head Dam

The primary purpose of North Broadway Low Head Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by City Of Columbus (local government). It impounds the Olentangy River near City Of Columbus.

The dam stands 6 feet tall and stretches 190 feet across, creates a reservoir covering 65 acres, has a maximum storage capacity of 132 acre-feet, and collects water from a drainage area of 522 square miles. Completed in 1969, the structure is well into its service life at over 50 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. An emergency action plan is in place for this dam. The most recent inspection on record was 12/21/2020.

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Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateOhio
CountyFranklin
Nearest CityCity Of Columbus
River/StreamOlentangy River
Coordinates40.02944, -83.02389

Physical Characteristics

Dam TypeConcrete
NID Height6 ft
Dam Height6 ft
Dam Length190 ft
Year Completed1969 (57 years old)

Storage & Hydraulics

NID Storage132 acre-ft
Max Storage132 acre-ft
Normal Storage132 acre-ft
Surface Area65 acres
Drainage Area522 sq mi
Max Discharge12,940 cfs

Ownership & Safety

PurposeDebris Control
OwnerCity of Columbus
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection12/21/2020
Emergency Action PlanYes

Identifiers

NID IDOH03029
Federal IDOH03029
More InfoState Dam Safety Program

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