Dorchester

Dorchester is a gravity dam located in Clark County, Wisconsin, built in 2011. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Dorchester

The primary purpose of Dorchester is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Village Of Dorchester (local government). It impounds the N.fork Poplar River near Osseo.

The dam stands 13 feet tall and stretches 400 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 177 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2011, the structure is relatively new.

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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/21/2013. That was over 12 years ago.

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Low HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateWisconsin
CountyClark
Nearest CityOsseo
River/StreamN.fork Poplar River
Coordinates44.99906, -90.33008

Physical Characteristics

Dam TypeGravity
NID Height13 ft
Dam Height13 ft
Dam Length400 ft
Year Completed2011 (15 years old)

Storage & Hydraulics

NID Storage177 acre-ft
Max Storage177 acre-ft
Normal Storage30 acre-ft
Surface Area7 acres
Drainage Area1 sq mi
Max Discharge1,360 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerVillage Of Dorchester
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection08/21/2013
Emergency Action PlanYes

Identifiers

NID IDWI00317
Federal IDWI00317
More InfoState Dam Safety Program

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