index map hydrographic survey 1991-1992€¦ · hydrographic survey 1991-1992 notes: (south and...
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2324
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2829
3031
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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
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23
39
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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