Coastal Protection and
Restoration Authority

Caernarvon and Davis Pond Diversions

The Louisiana Coastal Protection and Restoration Authority (CPRA) will host two advisory committee meetings in New Orleans for the Caernarvon and Davis Pond Freshwater Diversion projects on Wednesday, Dec. 11, 2024. The purpose of the meetings is to advise CPRA’s Executive Director of the operational management plans for the diversion structures. The meeting is required to assess the effects of prior diversion operations on conditions in the Breton Sound and Barataria Basins, consider recommendations of the Caernarvon and Davis Pond Technical Working Groups, and recommend an operations plan for each diversion for 2025. Meeting Agendas: Caernarvon Interagency Advisory Committee (CIAC) Meeting Agenda Davis Pond Advisory Committee (DPAC) Meeting Agenda The dates and locations for the meetings are listed below: CAERNARVON INTERAGENCY ADVISORY COMMITTEE ANNUAL MEETING FOR 2025 OPERATIONS Wednesday   |   December 11   |   9:00 – 10:30 AM  Flood Protection Authority-East Board Room 201 6920 Franklin Avenue New Orleans, LA 70122 Meeting Livestream DAVIS POND ADVISORY COMMITTEE ANNUAL MEETING FOR 2025 OPERATIONS Wednesday   |   December 11   |   11:00 AM – 12:30 PM Flood Protection Authority-East Board Room 201 6920 Franklin Avenue New Orleans, LA 70122 Meeting Livestream *Contact CPRA at coastal@la.gov or 225.342.0168 at least 24 hours prior to the meeting to request accommodations for ADA-qualifying disabilities.

2024 Operations Plans:

Caernarvon Operational Plan

Davis Pond Operational Plan

Caernarvon Operations Status Update:

Caernarvon Discharge

Caernarvon 15ppt Gage:  Black Bay near Stone Island (USGS site 073745275)

Caernarvon 5ppt Gage:  Crooked Bayou (USGS site 073745257)

2024 Caernarvon Freshwater Diversion discharge and 14-day salinity moving average at the Crooked Bayou NW of L. Cuatro Caballo gage (073745257) through 11/24/2024. Data between 09/17/2024 and 11/24/2024 are provisional. The Crooked Bayou gage is the primary gage used to guide diversion operations from June through November.

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Davis Pond Operations Status Update:

Davis Pond Discharge

Davis Pond 15ppt Gage:  Barataria Bay nr Grand Terre (USGS site 291929089562600)

Davis Pond 5ppt Gage:  Little Lake Bay Dos Gris (USGS site 292800090060000)

2024 Davis Pond Freshwater Diversion discharge and 14-day salinity moving average at the Little Lake near Bay Dosgris E of Galliano, LA gage (292800090060000) through 11/24/2024. Due to a loss of data between 06/18/2024 and 06/24/2024, possibly due to lightning striking the station, the salinity moving average between 06/25/2024 and 07/07/2024 is based on less than the standard 14 days of data. Data between 03/11/2024 and 11/24/2024 are provisional. The Little Lake gage is the primary gage used to guide diversion operations from June through November.

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Caernarvon Overview Information

xThe project was authorized on October 27, 1965, by Public Law 89-298, of the 89^th Congress, 1^st Session. It is near Braithwaite, Louisiana, on the left descending bank of the Mississippi River in Plaquemines Parish at mile 81.5.

2022 CIAC Presentation

Davis Pond Overview Information

The project was authorized by the Flood Control Act of 1965, the Water Resources Development Act of 1974, and the Water Resources Development Act of 1986.  It is near Luling, Louisiana, on the west bank of the Mississippi River in St. Charles Parish at mile 118.4.

2022 DPAC Presentation