1

2

3

4

5

6

7

8 9

10 11

1213

14 15

16

17

18

19

20

21

22

2324

25

26

27

2829

3031

32

33

34

35

36 37

38

39

40

4142 43

44

45

46

47

4849

5051

52

53

54

55

56

57

BATON ROUGEPORT

ALLEN

White Castle

DONALDSONVILLE

Black Hawk

Torras

Morganza

St. Francisville

PLAQUEMINE

Gramercy

LAPLACE

KENNER

ALGIERS

Belle Chasse

NEW ORLEANS

L A K E P O N T C H A R T R A I N

LAKE

BORGNE

LAKE MAUREPAS

WILKINSON COUNTY

WEST FELICIANA PARISH

Old River Lakeor Lake Mary

15

15

418

970

1

66

61

1

1

1

190

1

190

61

19061

30

1

1

30

22

18

44

22

44

61

18

44

51

90

18

61

90

90

39

46

23

39

MorganzaControl

Structure

Overbank

Structure

Outflow ChannelStructure

OldRiverLock

Port AllenLock

Plaquemine Lock

(Closed)

Inner HarborNavigation Lock

Algiers Lock

Harvey

Lock

29^45’

30^00’

30^15’

30^30’

30^45’

31^00’

90^00’90^15’90^30’90^45’91^00’91^15’91^30’91^45’

BLACK HAWK, LA. TO HEAD OF PASSES, LA.

ALSO SOUTH AND SOUTHWEST PASSES

AND PASS A LOUTRE

PREPARED UNDER THE DIRECTION OF THE

PRESIDENT, MISSISSIPPI RIVER COMMISSION

BY THE

NEW ORLEANS, LOUISIANA

IN 86 SHEETS

Polyconic Projection, Mississippi River Commission Datum (indicated by ticks).

Contours below Low Water Reference Plane are expressed in feet at 5 and 10 ft. intervals.

Contours above Low Water Reference Plane are expressed in feet at 5 ft. intervals.

Distances on Mississippi River above Head of Passes are shown at 1 mile intervals,

INDEX MAP

HYDROGRAPHIC SURVEY

1991-1992

NOTES: (South and Southwest Passes and Pass a Loutre.)

Distances on South and Southwest Passes below Head of Passes are shown at 1 mile intervals,

Distances on Pass a Loutre, from junction of Mississippi River and Pass a Loutre, are

shown at 1 mile intervals, 1962 survey.

Wavewash Protection

Foreshore Protection

Revetment

Paved road, four or six lanes wide

Paved road, two lanes wide

Loose surface road, graded and drained

Improved dirt road

Unimproved dirt road

Street

River mile above head of Passes (1962)

Low Water Reference Plane

Low Water Reference Plane

Elevation (to nearest foot N.G.V.D.)

Range Designation (1942 mileage)

Direction of flow

River Gage

Navigation light and name

Submarine pipe or cable crossing

NOTES: (Black Hawk, La. To Head of Passes, La.)

179

3 4

L.W.R.P.

R-180.7

MARCHAND LT.

57

58

59 60

61

62

63

64

65

6667

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

Myrtle Grove

Pointe A La Hache

Port Sulphur

Empire

Buras

Venice

Pilottown

Burrwood

Port Eads

G U L F O F M E X I C O

AdamsBay

BastianBay

39

23

39

23

23

90^00’ 89^45’ 89^30’ 89^15’ 89^00’

29^00’

29^15’

29^30’

29^45’

Low-sill

85

86

5 0 5 10 15

5 50 10 15 20 25

SCALE OF MILES

SCALE OF KILOMETERS

1962 survey.

Polyconic Projection, North American Datum of 1983.

Polyconic Projection, North American Datum of 1983.

Planimetry from aerial photographs flown November 1991.

1962 survey.

Top of levee (no baseline) and toe

Levee baseline, toe, and station numbers

Bulkhead

FLOW OF RIVER

Buoy

U.S. ARMY ENGINEER DISTRICT, NEW ORLEANS

All elevations are expressed in feet and refer to National Geodetic Vertical Datum of 1929.

Planimetry from aerial photographs flown November 1991.

All elevations are expressed in feet and refer to National Geodetic Vertical Datum of 1929.

Contours below -20 ft. contour are expressed in feet at 10 ft. intervals.

Poydras

LEGEND