Nekoosa

Nekoosa is a gravity dam located in Wood County, Wisconsin, built in 1889. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Nekoosa

The primary purpose of Nekoosa 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 Domtar Wisconsin Dam Corp (private). It impounds the Wisconsin River near Nekoosa.

The dam stands 32 feet tall and stretches 1,075 feet across, creates a reservoir covering 400 acres, has a maximum storage capacity of 3,400 acre-feet, and collects water from a drainage area of 5,525 square miles. Completed in 1889, the structure is over a century old.

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 09/26/2019.

At 32 feet, this dam is taller than 76% of dams nationwide.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateWisconsin
CountyWood
Nearest CityNekoosa
River/StreamWisconsin River
Coordinates44.31170, -89.89330

Physical Characteristics

Dam TypeGravity
NID Height32 ft
Dam Height32 ft
Dam Length1,075 ft
Year Completed1889 (137 years old)

Storage & Hydraulics

NID Storage3,400 acre-ft
Max Storage3,400 acre-ft
Normal Storage1,680 acre-ft
Surface Area400 acres
Drainage Area5,525 sq mi
Max Discharge39,960 cfs
Spillway TypeControlled

Ownership & Safety

PurposeHydroelectric
OwnerDomtar Wisconsin Dam Corp
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection09/26/2019
Emergency Action PlanNot Required

Identifiers

NID IDWI00818
Federal IDWI00818
More InfoState Dam Safety Program

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