Waterbury Dam

Waterbury Dam is an earth dam located in Gregory County, South Dakota, built in 1976. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planNot reported
Last inspection07/31/1991
Height60 ft
Built197650 years ago

Dam profile

NID height · 60 ft
60 FT TEN-STORY BUILDINGMEDIAN U.S. DAM · 24 FT

60 ft tall and 1,100 ft long, taller than 95% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.

About Waterbury Dam

The primary purpose of Waterbury Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Robert Waterbury (private). It impounds the Ponca Creek-tr.

The dam stands 60 feet tall and stretches 1,100 feet across, and has a maximum storage capacity of 900 acre-feet. Completed in 1976, the structure is 50 years 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. The most recent inspection on record was 07/31/1991. That was over 35 years ago.

At 60 feet, this dam is taller than 95% of all dams in the United States.

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Location

StateSouth Dakota
CountyGregory
Nearest CityNone
River/StreamPonca Creek-tr
Coordinates43.09400, -99.27940

Physical Characteristics

Dam TypeEarth
NID Height60 ft
Dam Height60 ft
Dam Length1,100 ft
Year Completed1976 (50 years old)

Storage & Hydraulics

NID Storage900 acre-ft
Max Storage900 acre-ft
Normal Storage750 acre-ft
Max Discharge2,865 cfs

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerRobert Waterbury
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot assessed
Last Inspection07/31/1991
Emergency Action PlanNot Required

Identifiers

NID IDSD02213
Federal IDSD02213
More InfoState Dam Safety Program