Oconto Falls Lower

Oconto Falls Lower is a rockfill dam located in Oconto County, Wisconsin, built in 1857. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Oconto Falls Lower

The primary purpose of Oconto Falls Lower is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by New Hydro, Inc (private). It impounds the Oconto River near Oconto Falls.

The dam stands 22 feet tall and stretches 425 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 51 acre-feet, and collects water from a drainage area of 759 square miles. Completed in 1857, the structure is one of the older dams in the region, with over a century and a half of service.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/06/2019.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateWisconsin
CountyOconto
Nearest CityOconto Falls
River/StreamOconto River
Coordinates44.87197, -88.14355

Physical Characteristics

Dam TypeRockfill
NID Height22 ft
Dam Height22 ft
Dam Length425 ft
Year Completed1857 (169 years old)

Storage & Hydraulics

NID Storage51 acre-ft
Max Storage51 acre-ft
Normal Storage50 acre-ft
Surface Area9 acres
Drainage Area759 sq mi
Max Discharge5,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeHydroelectric
OwnerNEW Hydro, Inc
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection08/06/2019
Emergency Action PlanNot Required

Identifiers

NID IDWI00761
Federal IDWI00761
More InfoState Dam Safety Program

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