Upper Bayou Nezpique No 6

Upper Bayou Nezpique No 6 is an earth dam located in Evangeline Parish, Louisiana, built in 1969. It carries a Significant hazard potential classification and has a fair condition assessment.

About Upper Bayou Nezpique No 6

The primary purpose of Upper Bayou Nezpique No 6 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 Evangeline Parish Police Jury (local government). It impounds the Tr-bayou Nezpique near Ville Platte.

The dam stands 25 feet tall and stretches 3,040 feet across, creates a reservoir covering 350 acres, has a maximum storage capacity of 4,193 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1969, 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 01/12/2022.

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Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateLouisiana
CountyEvangeline
Nearest CityVille Platte
River/StreamTr-bayou Nezpique
Coordinates30.81774, -92.38973

Physical Characteristics

Dam TypeEarth
NID Height25 ft
Dam Height21 ft
Dam Length3,040 ft
Year Completed1969 (57 years old)

Storage & Hydraulics

NID Storage4,193 acre-ft
Max Storage4,193 acre-ft
Normal Storage1,600 acre-ft
Surface Area350 acres
Drainage Area6 sq mi
Max Discharge1,540 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerEvangeline Parish Police Jury
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection01/12/2022
Emergency Action PlanYes

Identifiers

NID IDLA00048
Federal IDLA00048
More InfoState Dam Safety Program

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