10

59

10

10

49

55

10

12

12

510

310

110

610

308

182

1

1

1

23

45

4746

24

13

20

3134

90

90

90

90

190

190

BR90

BR90

LAKE PONTCHARTRAIN

LAKEMAUREPAS

LAKE BORGNE

LAKESALVADORWHITE

LAKEVERMILION

BAY

ATCHAFALAYA BAY

BRETONSOUND

CHANDELEURSOUND

TERREBONNEBAY CAILLOU

BAY

TIMBALIERBAY

LITTLELAKE

BARATARIABAY

WEST COTEBLANCHE BAY

EAST COTEBLANCHE BAY

M I S S I S S I P P I S O U N D

M i s s i s s i p p i R i v e r

Atch

afa

lay

a R

iver

Bayou Teche

Bayou L

afo

urch

e

Bayou Lafourche

Pe

arl

R

iver

River

Amite

River

Tangipahoa

LAKEVERRET

LACDESALLEMANDS

G u l f o f M e x i c o

Gulf IslandsNational Seashore

Eunice

Crowley

Opelousas

NewIberia

Donaldsonville

Hammond Covington

Mandeville

Slidell

Bay St Louis

GulfportBiloxi

Picayune

Plaquemine

Lafayette

New Orleans

BatonRouge

Thibodaux

Pointe a la Hache

Golden Meadow

Lafitte

Houma

Raceland

Morgan City

Franklin

Venice

Buras

Grand Isle

Mississippi Riversediment plume

Atchafalaya Riversediment plume

MISSISSIPPI

LOU

ISIAN

A

Atchafalaya delta

A growing “birdfoot”delta at Mississippi’s endreaches into the Gulf

0

0

25 Kilometers

25 Miles

North

Cities and towns

Agriculture (formerly prairie and forest)

Forest

Swamp forest

Marsh

Acadian Cultural Center

Prairie AcadianCultural Center

Wetlands AcadianCultural Center

Barataria Preserve

French QuarterVisitor Center

Chalmette Battlefield

M

ississippi River New Orleans

1

1

2

2

3

3

4

4

5

5

L O U I S I A N A

3,500–2,500 years ago

2,600–1,500 years ago

1,500–700 years ago

1,200–500 years ago

500–present