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Louisiana Levee Districts Claiborne Union Morehouse West Carroll East CMD Coastal Zone 13 Carroll Bossier Webster Coastal Area Boundary Lincoln 15 Teche-Vermilion Fresh Water District Caddo Ouachita LA Parishes Richland Madison Oklahoma Bienville Arkansas Levee Districts Jackson 4 Atchafalaya Basin Levee District 2 Mississippi Franklin Madison 15 Bossier Levee District 16 Red Caldwell 3 De Soto River Texas 13 Caddo Levee District Tensas Louisiana Winn 22 Chenier Plain Coastal Restoration and Protection Authority 3 Fifth Louisiana Levee District Catahoula 17 Gulf of Mexico 30 Grand Isle Independent Levee District La Salle 20 Iberia Parish Levee, Hurricane Protection, and Conservation District Sabine Natchitoches Grant Concordia 33 Lafitte Area Independent Levee District 19 6 Lafourche Basin Levee District 17 Natchitoches Levee and Drainage District 19 Nineteenth Louisiana Levee District Avoyelles Rapides 24 North Lafourche Conservation, Levee and Drainage District Vernon West 5 Pontchartrain Levee District 21 Feliciana 18 16 Red River Levee and Drainage District West East Washington Feliciana Feliciana St. 21 Red River, Atchafalaya, and Bayou Boeuf Levee District Helena Evangeline 25 South Lafourche Levee District Pointe St. Beauregard Allen Tangipahoa St. Coupee Tammany 34 St. Mary Levee District Landry East West Baton 35 St. Tammany Levee District Baton Rouge Livingston Rouge 12 2 Tensas Levee District 36 35 10 Terrebonne Levee and Conservation District Jefferson Acadia St. 4 Jefferson Calcasieu Davis Lafayette Martin SLFPA - East Iberville 5 St. John Ascension Orleans the 27 East Jefferson Levee District 22 St. Baptist 7 James 27 8 Lake Borgne Basin Levee District St. 20 Assumption 6 32 11 Bernard 7 Orleans Levee District Cameron St. St. 8 Vermilion Martin Charles 36 Tangipahoa Levee District 24 SLFPA - West 34 9 1 33 38 St. Mary Lafourche 28 32 Algiers Levee District Iberia 28 West Jefferson Levee District 10 25 Plaquemines Entities Functioning as Levee Districts Terrebonne 38 Plaquemines Parish Government 30 12 City of Baton Rouge [ 1 Morgan City 1:1,850,000 18 Louisiana State Penitentiary 0 10 20 40 60 80 100 Kilometers 11 St. Charles Parish Government 9 Town of Berwick 0 10 20 40 60 80 100 Miles 3/14/2016.

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Flooding Concerns on the Lower Pearl River Near Walkiah Bluff
Flood Assessment and Management Flooding Concerns on the Lower Pearl River Near Walkiah Bluff Amanda L. Roberts, National Weather Service Walkiah Bluff is located in south Mississippi on the East Pearl River near Wilson Slough and the divergence of the Pearl River into the East and West Pearl Rivers. Approximately 175 residents own homes on or near the East Pearl River near Walkiah Bluff, MS. Flooding often occurs in the Walkiah Bluff area whenever flooding occurs upstream on the Pearl River, thus heightening concerns of local citizens. The Lower Mississippi River Forecast Center (LMRFC) has flood forecasting responsibility in this area, however, Walkiah Bluff is not currently an official forecast point. Historical data from the period of record was utilized to develop flood forecasting guidance tools for the Walkiah Bluff area. Flood events were analyzed to obtain a better understanding of how Walkiah Bluff reacts in relationship to upstream flooding on the Pearl River at Bogalusa, LA and the Bogue Chitto River at Bush, LA. As- sessments were also made regarding how the Pearl River at Pearl River, LA reacts in association with upstream flooding at Walkiah Bluff and Bush. The effects of the Bogue Chitto River on the crest at Walkiah Bluff, MS are complicated due to numerous sloughs and bayous that interconnect the two channels. It is difficult to accurately interpolate any affects from the Bogue Chitto by utilizing a crest to crest curve for Bogalusa to Walkiah Bluff. However, because the crest at Pearl River, LA is based upon water routed from both Bogalusa and Bush, the LMRFC forecast for Pearl River, LA can be utilized along with the crest to crest curve for Walkiah Bluff to Pearl River, LA to essentially back-forecast the crest at Walkiah Bluff.
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COMMON BOTTLENOSE DOLPHIN (Tursiops Truncatus Truncatus) Mississippi Sound, Lake Borgne, Bay Boudreau Stock
May 2015 COMMON BOTTLENOSE DOLPHIN (Tursiops truncatus truncatus) Mississippi Sound, Lake Borgne, Bay Boudreau Stock NOTE – NMFS is in the process of writing individual stock assessment reports for each of the 31 bay, sound and estuary stocks of common bottlenose dolphins in the Gulf of Mexico. Until this effort is completed and 31 individual reports are available, some of the basic information presented in this report will also be included in the report: “Northern Gulf of Mexico Bay, Sound and Estuary Stocks”. STOCK DEFINITION AND GEOGRAPHIC RANGE Common bottlenose dolphins are distributed throughout the bays, sounds and estuaries of the northern Gulf of Mexico (Mullin 1988). Long-term (year-round, multi-year) residency by at least some individuals has been reported from nearly every site where photographic identification (photo-ID) or tagging studies have been conducted in the Gulf of Mexico (e.g., Irvine and Wells 1972; Shane 1977; Gruber 1981; Irvine et al. 1981; Wells 1986; Wells et al. 1987; Scott et al. 1990; Shane 1990; Wells 1991; Bräger 1993; Bräger et al. 1994; Fertl 1994; Wells et al. 1996a,b; Wells et al. 1997; Weller 1998; Maze and Wrsig 1999; Lynn and Wrsig 2002; Wells 2003; Hubard et al. 2004; Irwin and Wrsig 2004; Shane 2004; Balmer et al. 2008; Urian et al. 2009; Bassos-Hull et al. 2013). In many cases, residents predominantly use the bay, sound or estuary waters, with limited movements through passes to the Gulf of Mexico (Shane 1977; Shane 1990; Gruber 1981; Irvine et al. 1981; Shane 1990; Maze and Würsig 1999; Lynn and Würsig 2002; Fazioli et al.
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Supplemental Environmental Assessment #269-A: Mississippi River Gulf Outlet, South of Lake Borgne, Additional Disposal Areas
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Golden Triangle Marsh Creation Council (LA RESTORE 002 000 Cat1)
Gulf Coast Mississippi River Delta Watershed Ecosystem Restoration Golden Triangle Marsh Creation Council (LA_RESTORE_002_000_Cat1) Project Name: Golden Triangle Marsh Creation - Planning Cost: Category 1: $4,347,733 Responsible Council Member: State of Louisiana Project Details: This proposed project would complete planning to create approximately 600 acres of marsh within the Golden Triangle Marsh system. Because the Inner Harbor Navigation Canal/Lake Borgne Surge Barrier stretches across the Golden Triangle Marsh, these wetlands provide an important natural buffer in the multiple lines of defense protecting geographically vulnerable communities in New Orleans from storm surge. In addition, the Golden Triangle Marsh falls within - and would enhance if fully implemented - the Bayou Sauvage National Wildlife Refuge, which includes fresh and brackish marshes and coastal hardwood forest, and serves as valuable wildlife, fish, and shellfish habitat. Activities: Activities would include engineering and design of the Golden Triangle Marsh Creation project, leading to construction-ready plans and specifications and the development of an adaptive management plan to guide decision-making for future project maintenance activities. If the plans are implemented in the future, the project would be constructed by hydraulically dredging and pumping sediment from Lake Borgne to a 600-acre fill site located approximately 16 miles from the borrow site. The borrow area, which consists mostly of clays and silts, currently has a depth of -10 feet and would be dredged to a depth of -30 feet. Earthen containment dikes would be constructed to facilitate the construction of the marsh. The engineering and design and permitting is expected to take three years to complete.
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Recommendations for Freshwater Diversion to Louisiana Estuaries
0 0 RECOMMENDATIONS FOR 0 FRESHWATER DIVERSION TO LOUISIANA ESTUARIES EAST OF THE MISSISSIPPI RIVER 0 0 DEPARTMENT OF NATURAL RESOURCES COASTAL MANAGBIIBNT SECTION 0 0 Cover: a A plume of turbid water emanates from Bayou Lamoque as freshwater is diverted from the Mississippi River into the Breton �ound estuary to control salinity levels �nd enhance oyster production (p. 2). _ 0 0 . , 0 n 0 0 0 � 0 0 This document was published at a cost of $3.17 per copy by the Louisiana Department of Natural Resources, P.O. Box 44396, Baton Rouge, Louisiana, for the purpose of carrying out the requirements of the Louisiana Coastal Zone Management Program under the authority of Act 361 of 1979. This material was printed in accordance with 0 the standards for printing by state agencies established pursuant to R.S. 43:31 and was purchased in accordance with the provisions of Title 43 of the Louisiana Revised Statutes. This project was financed through a grant provided under the Coastal Management Act of l9n, amendeci, which is administered by the U.S. Office of Coastal Zone Management, asNational Oceanic and Atmospheric Administration. 0 � 0 0 0 D RECOMMENDATIONS FOR FRESHWATER DIVERSION TO LOUISIANA EAST OF THE MISSISSIPPI RIVER 0 ESTUARIES ( D by J. L. van Beek 0 D. Roberts D. Davis D. Sabins S. M. Gagliano 0 · Coastal Environments, Inc. 0 Baton Rouge, LA 0 This study was funded by: 0 Office of Coastal Zone Management National Oceanic and Atmospheric Administration 0 Department of Commerce · o prepared for: Coastal Management Section a Louisiana Department of Natural Resources G Baton Rouge, Louisiana 0 JUNE 1982 0 0 0 0 TABLE OF CONTENTS 0 CHAPTER IV: SUPPLEMENTAL FRESHWATER REQUIREMENTS List of Phot()S iii ..
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Info Sheet Flood Defense System 18Jan30.Pub
THE FLOOD PROTECTION AUTHORITY COMPREHENSIVE REGIONAL FLOOD DEFENSE The Evolution of the Local-Federal Flood Protection Partnership Local governmental flood protection efforts began with the establishment of levee districts. The Orleans Levee District was established in 1890, Lake Borgne Basin Levee District in 1892 and Pontchartrain Levee District (PLD) in 1895. The East Jefferson Levee District was removed from the PLD and established in 1979. The Great Flood of 1927 resulted in the eventual collapse of all levees around the Mississippi River. Congress passed the Flood Control Act of 1928 authorizing the Mississippi River and Tributaries (MRT) project. The MRT project brought an un- precedented degree of protection against riverine flooding. The first federal hurricane protection project was authorized by Congress in July, 1946 (Lake Pontchar- train, LA), for the construction of levees along the Jefferson Parish lakefront and Jefferson Parish side of the 17th Street Canal. In September, 1965, Hurricane Betsy made landfall in Louisiana as a powerful Category 4 hurricane causing widespread destruction across the region. The Flood Control Act of 1965, enacted by Congress on October 27, 1965, authorized the Corps of Engineers to design and construct hurricane flood protection in the New Orleans region [Lake Pontchartrain and Vicinity, Louisiana Hurricane Protection Project (LP&VHPP)] through the construction of levees, floodwalls and flood control structures. A Federal-Local Partnership developed with the local levee districts serving as the non-federal sponsor and assuming the local cost share for design and construction as well as taking on the operation and maintenance responsibilities of project features upon completion. The project was severely hindered by technical issues, environmental concerns, legal challenges and local opposition to certain features, and experienced significant costs escalations due to modifications and inflation.
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Pearl River Basin Report FINAL 4.Pdf
2009 PPeeaarrll RRiivveerr BBaassiinn Characterization Report Louisiana State Reservoir Priority and Development Program BASIN CHARACTERIZATION REPORT FOR THE PEARL RIVER BASIN The Louisiana Department of Transportation and Development (DOTD) is responsible for reviewing and prioritizing proposed reservoir projects for which State of Louisiana (State) funding is being sought, and then recommending projects to the State Legislature. To support reservoir project review, prioritization, and recommendation efforts, DOTD has prepared characterization reports of water resources conditions in each of the nine principal surface water Report Topics Page basins in the State. These characterization reports provide an overview of water uses, Basin Overview ...................................2 needs, and concerns, and can be used by applicants for State funding, and by State Land Use and Legal Entities ...................4 agencies as they evaluate the applications. The basin characterization reports also Physiographic and Climatic contain extensive references that interested parties can use to find more information Information ........................................5 from Federal, State, and local agencies or other sources. The reports represent a Water Use .........................................6 “snapshot” of conditions in early 2009 (or when the references cited in the reports Surface Water ....................................8 were published). Groundwater ....................................12 Flooding ..........................................14
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Lake Borgne and MRGO Shoreline Protection (PO-32) De-Authorized
Louisiana Coastal Wetlands Conservation and Restoration Task Force rev. March 2010 Cost figures as of: September 2021 Lake Borgne and MRGO Shoreline Protection (PO-32) De-authorized Project Status Approved Date: 2003 Project Area: 465 acres Approved Funds: $1.08 M Total Est. Cost: $1.08 M Net Benefit After 20 Years: 266 acres Status: De-authorized Project Type: Shoreline Protection PPL #: 12 Location The project is located along the Lake Borgne shoreline between Doulluts Canal and Jahnckes Ditch and along the north bank of the Mississippi River Gulf Outlet (MRGO) between Doulluts Canal and Lena Lagoon in St. Bernard Parish, Louisiana. This project will help protect the fragile landbridge separating the MRGO (left Problems side of picture) and Lake Borgne (upper right). Doulluts Canal is also visible in this photograph. Shoreline erosion rates in this area were estimated to be 9 feet per year along Lake Borgne and 24 feet per year along the MRGO. Progress to Date The Louisiana Coastal Wetlands Conservation and Restoration Strategy Restoration Task Force approved funding for engineering and design at their January 2003 meeting. Engineering and The objective of this project is to preserve the marsh Design were completed in March 2005. Following between Lake Borgne and the MRGO by preventing Hurricane Katrina MVN Operations Division received 3rd shoreline erosion. In order to accomplish this objective, an supplemental funds and constructed the Lake Bornge reach 18,500 linear foot rock dike will be constructed along the using the CWPPRA design. In January 2010, the Task Force Lake Borgne shoreline from Doulluts Canal to Jahnckes initiated procedures to deauthorize this project.
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Shell Beach South Marsh Creation (PO-168)
Louisiana Coastal Wetlands Conservation and Restoration Task Force June 2021 Cost figures as of: September 2021 Shell Beach South Marsh Creation (PO-168) Project Status Approved Date: 2015 Project Area: 634 acres Approved Funds: $3.17 M Total Est. Cost: $28.1 M Net Benefit After 20 Years: 344 acres Status: Deauthorized/Transferred Project Type: Marsh Creation PPL#: 24 Location Region 1, Pontchartrain Basin, South Lake Borgne Mapping Unit, St. Bernard Parish, north bank of the Mississippi River Gulf Outlet (MRGO) in the vicinity of Shell Beach. Problems The marsh boundary separating Lake Borgne and the MRGO has undergone both interior and shoreline wetland losses due to subsidence, impacts related to construction and use of the MRGO (i.e., deep draft vessel traffic), and wind-driven Subsidence and salt water intrusion has caused shoreline and wetland loss within waves. Although much of the project area is protected from the marsh boundary separating Lake Borgne and the MRGO. Dredged sediment from Lake Borgne will be pumped into open water areas which will create 346 edge erosion by shoreline protection measures, and since acres of marsh and nourish 288 acres of existing fragmented marsh. 2009, the MRGO has been deauthorized for deep draft navigation and maintenance, interior wetland loss due to Progress to Date subsidence continues to cause marsh fragmentation and pond enlargement. Wetland loss rates in the project area are This project was approved for Phase I Engineering and estimated to be -0.60 percent a year based on USGS analysis. Design in January 2015. In March 2021, the project was deauthorized/transferred because the benefit area overlapped Restoration Strategy with a much larger NRDA project.
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Water Resources of St. Tammany Parish, Louisiana
In cooperation with the Louisiana Department of Transportation and Development Water Resources of St. Tammany Parish, Louisiana Introduction supplies accounted for 70 percent (16 Mgal/d) of the total water withdrawn (table 2). Withdrawals for domestic use were 28 percent (6 Mgal/d). Generally, water withdrawals in the St. Tammany Parish, located in southeastern Louisiana parish increased from 1960 to 1970, decreased from 1970 to (fig. 1), contains fresh groundwater and surface-water resources. 1985, and again increased from 1985 to 2005 (fig. 2). In 2005, about 22.8 million gallons per day (Mgal/d) were This fact sheet summarizes basic information on the withdrawn from water sources in St. Tammany Parish (fig. water resources of St. Tammany Parish, La. Information 2). Almost 100 percent (22.7 Mgal/d) was withdrawn from on groundwater and surface-water availability, quality, groundwater, and less than 1 percent (0.06 Mgal/d) was development, use, and trends is based on previously published withdrawn from surface water (table 1). Withdrawals for public reports listed in the references section. 90°15' 90°00' 89°45' 89°30' A R K A N S A S M L I WASHINGTON O S Bogue U S 30°45' PARISH I I S S S A I S A I X N P A Chitto P TE I Sun Enlarged Bogue River area Folsom PARISH G U L F O F MEM TANGIPAHOA E X I Falaya COC O Tchefuncte ST. TAMMANY PARISH River M River Talisheek I West Pearl SS 30°30' River Covington Abita Abita Springs I Hickory EXPLANATION Pearl SS A River Approximate altitude of the base of fresh groundwater, in feet below Madisonville National Geodetic Vertical Datum of 1929 I Pearl River Mandeville River P 2,000 to 2,499 Bayou Lacombe P 2,500 to 2,999 A´ 3,000 to 3,499 Lacombe I 3,500 to 3,599 Slidell A A' Trace of hydrogeologic Lake Pontchartrain section (see fig.
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