Bayou Dupont No 19

Bayou Dupont No 19 is an earth dam located in Natchitoches Parish, Louisiana, built in 1959. It carries a Significant hazard potential classification and has a fair condition assessment.

About Bayou Dupont No 19

The primary purpose of Bayou Dupont No 19 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 Ralph Roe;robert B. Welch (private). It impounds the Tr-stoker Branch near Robeline.

The dam stands 35 feet tall and stretches 1,090 feet across, creates a reservoir covering 34 acres, has a maximum storage capacity of 644 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1959, the structure is well into its service life at over 50 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 08/15/2023.

At 35 feet, this dam is taller than 82% of dams nationwide.

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Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateLouisiana
CountyNatchitoches
Nearest CityRobeline
River/StreamTr-stoker Branch
Coordinates31.66800, -93.29250

Physical Characteristics

Dam TypeEarth
NID Height35 ft
Dam Height26 ft
Dam Length1,090 ft
Year Completed1959 (67 years old)

Storage & Hydraulics

NID Storage644 acre-ft
Max Storage644 acre-ft
Normal Storage191 acre-ft
Surface Area34 acres
Drainage Area0 sq mi
Max Discharge4,160 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerRalph Roe;Robert B. Welch
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection08/15/2023
Emergency Action PlanYes

Identifiers

NID IDLA00053
Federal IDLA00053
More InfoState Dam Safety Program

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