CARTOGRAPHY OF GEODYNAMIC ANALYSIS

REGIONAL SHORELINE MONITORING STUDY AND DRAWING UP A MANAGEMENT SCHEME FOR

THE WEST AFRICAN COASTAL AREA

West African Economicand Monetary Union

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Cap Blanc

Pointe Rey

Cap Tessit

Cap el Sass

Cap Tegarat

Cap Timirist

Pointe Chacal

Pointe Salines

Cap Sainte-Anne

Pointe du Désert

Pointe de Cansado

Pointe des Maures

Pointe de l' Etoile

Pointe des Coquilles

Iwik

Jreif

Tanit

Lemsid

Agadir

Djreida

Tiwilit

Arkeiss

Ablawagh

Mhaijrat

Teichott

Ten Alloul

PK28

Nouadhibou

Boulenwar

Nouamghar

NOUAKCHOTT

MAURITANIA

18° W 17° W

20° N

19° N

18° N

21° N

20° N

19° N

18° N

18° W 17° W 16° W

Mauritanie - 1/2

Feuille 1/9

21° N

16° W

EA

M -

GE

OM

E, E

OS

.D2C

- E

nviro

nmen

t and

Dev

elop

men

t Net

wor

k - w

ww

.eco

-eva

luat

ion.

org

Mali

Mauritanie

Sénégal

Guinée

GuinéeBissau

SierraLeone

Libéria Côte d'Ivoire Ghana

Benin

Togo

Burkina Faso

Niger

Nigeria

CONTINENTAL SHELF AND LOCATION OF MAP

0 m 250 m

Bathymetry

0 5 km 20 km 50 km

1:500 000 SCALE

N

S

EW

SE

NE

SW

NW

Mauritania - 1/2

Sheet1/9

Railway

Hub intersection

Dense urban fabric

Loose urban fabric

Very loose urban fabric

Open space

Non discriminatedurban areas

URBAN AREAS

Country borders

ROAD NETWORKMajor road

Minor road

Tertiary roadDykes

Graduated water system

Water body lagoon

Dam reservoir

HYDROGRAPHY

Mangroves

Salt marshes (sebkhras)

Margins of salt marshes (sebkhras)

Undifferentiated wetlands

Alluvial plains

Hydromorphic alluvial plains

WETLANDS AND MARSHES

K - Clay, sandy, pebbly materialsfrom lipmestone and marno-limestone to ferruginouscuirasses

WEATHERED SEDIMENTFORMATIONS WITH INCLUSIONSOF HARDPAN AND RESISTANT ROCK

INTRUSIVE, METAMORPHICROCKS

P - Weathered granirte and metamorphic rock, with seamsof harder rock in places

Pr - Solid rocks :quartzite, gabbro,basalt.

Gr - Sandy materials from moreor lessweathered sandstone

Tb -Sans to clay materials fromthe "terre de barres" formation

Ct - Loose or partially consolidatedpre-quaternary sediment formations

SEDIMENTOLOGY - LITHOLOGY

SANDY FORMATIONS

S- Dune rims and recent terraces

Sd - Smoothed dune formations (North of Dakar)

Sh -Hydromorphic terraces

Sc -"Dior" type sands

Sct - Anciejnt sandy terraces (South of Dakar)

River mouths

Coastal drift

Tidal flows

ORIENTATION OF SEDIMENTARY DEPOSITS

ShoalsSand-mud banks

INDICATIVE BATHYMETRY

0 to 5 meters

5 to 10 meters

10 to 20 meters

Isolated shoals of under 20m situated seawardof the main 20m isobath are not schown.

# Reefs -shoals

1 - MUD OR SANDY COAST REGULARLY COVERED BY THE TIDE

1A- Apparent coastline of mangroves materialised by continuous barrier of trees

1B- Apparent coastline with discontinuous border of mangroves and/or coastal mudflats

1C- Apparent coastline typified by thin fringe of mangroves adjacent to locally rocky and/or solid hill topography

2 - SANDY OR SILT COAST LOCATED IN NATURALLY HIGHLY UNSTABLE SITES

2A- Sandy or silt coast associated with mangrovesand not covered by the tide

2B- Coastline of islets, sandbanks and insular splits

2C- Estuary and coastal river littoral zones

5 - ROCKY COAST

TYPOLOGY OF SEA FRONTS

3 - SANDY COAST WITH STRAIGHT LONGITUDINALPROFILE

3A- Sandy coast with straight longitudinal profile, absenceof back-lagoons, depressions or channels parallel to the shore less than 2km from the shoreline

3B- Sandy coast with straight longitudinal profile, presenceof back-lagoons, depressions or channels parallel to the shore (500m to 2km from the shoreline)

3C- Sandy coast with straight longitudinal profile, presenceof back-lagoons, depressions or channels parallel to the shore (less than 500m from the shoreline)

4 - SANDY AND ROCKY COAST IN STEPS(Headlands and coves)

4A- Wide coves with a low radius of curvature

4B- Frequent rocky headlands

This cartography is a working document provided for illustrative purposes only and is not intended to be used as a substitute for official topographic or hydrographic documents. Maritime country borders are not shown, as the boundary delimitation has no legal standing.