Ellison Creek Watershed Structure 1 Dam

Ellison Creek Watershed Structure 1 Dam is an earth dam located in Yazoo County, Mississippi, built in 1961. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planNot reported
Last inspectionNot reported
Height20 ft
Built196165 years ago

Dam profile

NID height · 20 ft
20 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

20 ft tall. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.

About Ellison Creek Watershed Structure 1 Dam

The primary purpose of Ellison Creek Watershed Structure 1 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is local government-owned.

The dam stands 20 feet tall, has a maximum storage capacity of 558 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1961, the structure is well into its service life at over 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.

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Location

StateMississippi
CountyYazoo
Coordinates32.84778, -90.13856

Physical Characteristics

Dam TypeEarth
NID Height20 ft
Dam Height20 ft
Year Completed1961 (65 years old)

Storage & Hydraulics

NID Storage558 acre-ft
Max Storage558 acre-ft
Drainage Area1 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot assessed
Emergency Action PlanNot Required

Identifiers

NID IDMS01938
Federal IDMS01938
More InfoState Dam Safety Program