Upper Horicon

Upper Horicon is an earth dam located in Dodge County, Wisconsin, built in 1945. It carries a Low hazard potential classification.

About Upper Horicon

The primary purpose of Upper Horicon is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by U.s. Department Of The Interior (federal). It impounds the Main Ditch near Horicon.

The dam stands 8 feet tall and stretches 21,700 feet across, creates a reservoir covering 320 acres, has a maximum storage capacity of 1,600 acre-feet, and collects water from a drainage area of 220 square miles. Completed in 1945, the structure is well-established, with more than 75 years 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.

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Low HazardNot Rated ConditionEmergency Action Plan: No

Location

StateWisconsin
CountyDodge
Nearest CityHoricon
River/StreamMain Ditch
Coordinates43.52408, -88.64456

Physical Characteristics

Dam TypeEarth
NID Height8 ft
Dam Height8 ft
Dam Length21,700 ft
Year Completed1945 (81 years old)

Storage & Hydraulics

NID Storage1,600 acre-ft
Max Storage1,600 acre-ft
Normal Storage600 acre-ft
Surface Area320 acres
Drainage Area220 sq mi
Max Discharge1,470 cfs
Spillway TypeControlled

Ownership & Safety

PurposeRecreation
OwnerU.S. Department of the Interior
Owner TypeFederal
Hazard ClassificationLow
Condition AssessmentNot Rated
Emergency Action PlanNo

Identifiers

NID IDWI00829
Federal IDWI00829
More InfoState Dam Safety Program

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