Middle Oconee- Walnut Creek Structure No 9

Middle Oconee- Walnut Creek Structure No 9 is an earth dam located in Hall County, Georgia, built in 1972. It carries a Low hazard potential classification.

About Middle Oconee- Walnut Creek Structure No 9

The primary purpose of Middle Oconee- Walnut Creek Structure No 9 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 owned by Upper Chattahoochee River S & Wcd (state). It impounds the Unknown.

The dam stands 46 feet tall and stretches 540 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 448 acre-feet, and collects water from a drainage area of 1,107 square miles. Completed in 1972, 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. The most recent inspection on record was 10/01/2009. That was over 16 years ago.

At 46 feet, this dam is taller than 91% of dams nationwide.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateGeorgia
CountyHall
River/StreamUnknown
Coordinates34.22500, -83.71333

Physical Characteristics

Dam TypeEarth
NID Height46 ft
Dam Height46 ft
Dam Length540 ft
Year Completed1972 (54 years old)

Storage & Hydraulics

NID Storage448 acre-ft
Max Storage448 acre-ft
Surface Area9 acres
Drainage Area1,107 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerUpper Chattahoochee River S & Wcd
Owner TypeState
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection10/01/2009
Emergency Action PlanNot Required

Identifiers

NID IDGA00538
Federal IDGA00538
More InfoState Dam Safety Program

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