7° W 6° W 5° W 4° W Lamé Anyama-Aouabo ! Anyama-Adjamé IVORY COAST Akoupé ! ! Abobo ! Lopou Ousrou ! ! Orbaf ! Agnebi Dibrimou ! Dabou Adiapo-Doumé Bouboury ! ! Abadjin-Kouté Bandama Kosrou Agbaye Songon ! ! Mopoyem ! ! Bimbresso ! ! ! ! ! Boubo Barrage Songon-DagbéSongon-Kassemblé Audouin Wawapéko ! ! Grand-Lahou N'dyéni ! ! Lagune Ebrié Tiémé Sassako-Bégniny ! Akrou Avagou ! ! ! Ahua ! ! Lagune Tagba Mbokrou ABIDJAN Addah ! Lagune Tadio ! Jacqueville Canal d'Assigny Lahou-Plage Groguida ! ! Ebonou Fresco Niouniourou ! ! Davo Lagune Ngi Sassandra Kosso Barrage ! Dagbégo ! Pointe de Kapet 6° N Pointe Brouko 6° N IVORY COAST ! Sassandra San Pedro Barrage Pointe Enframa Kounoukou ! Pointe Monoho Poro ! Baba Niero ! ! San Pedro Ouro ! ! Grand-Bérébi # ## ## # Pointe Klama Cavally Cavalla Pont Yaka ! ! Sekréké Pointe Basha ! Tabou Pointe James ! Pointe Tafou Baoulo ! Soublaké Cavalla Town ! ! Pointe Subra M‚no # REGIONAL SHORELINE MONITORING STUDY AND DRAWING UP A MANAGEMENT SCHEME FOR THE WEST AFRICAN COASTAL AREA TYPOLOGY OF SEA FRONTS 1 - MUD OR SANDY COAST REGULARLY West African COVERED BY THE TIDE Economicand Monetary Union 1A- Apparent coastline of mangroves materialised by continuous barrier of trees CARTOGRAPHY OF GEODYNAMIC ANALYSIS Country borders SEDIMENTOLOGY - LITHOLOGY 1B- Apparent coastline with discontinuous border o ROAD NETWORK f mangroves and/or coastal mudflats SANDY FORMATIONS 5° N Major road 5° N 1C- Apparent coastline typified by thin fringe of S- Dune rims and recent terraces mangroves adjacent to locally rocky and/or Minor road solid hill topography Tertiary road Sd - Smoothed dune formations CONTINENTAL SHELF AND LOCATION OF MAP Dykes (North of Dakar) Railway 2 - SANDY OR SILT COAST LOCATED IN Sct - Anciejnt sandy terraces NATURALLY HIGHLY UNSTABLE SITES 1:500 000 SCALE URBAN AREAS (South of Dakar) 2A- Sandy or silt coast associated with mangroves Dense urban fabric Sh -Hydromorphic terraces 0 5 km 20 km 50 km and not covered by the tide Loose urban fabric Sc -"Dior" type sands 2B- Coastline of islets, sandbanks and insular splits Mauritanie N Very loose urban fabric INTRUSIVE, METAMORPHIC NW NE 2C- Estuary and coastal river littoral zones Open space ROCKS W E Ivory Coast 1/2 Non discriminated P - Weathered granirte and 3 - SANDY COAST WITH STRAIGHT LONGITUDINAL urban areas metamorphic rock, with seams ORIENTATION OF SW SE PROFILE Hub intersection of harder rock in places Sénégal SEDIMENTARY DEPOSITS S Sheet 7/9 3A- Sandy coast with straight longitudinal profile, absence Pr - Solid rocks : Coastal drift Niger of back-lagoons, depressions or channels parallel to the HYDROGRAPHY quartzite, gabbro,basalt. shore less than 2km from the shoreline River mouths Graduated water system Mali Tidal flows Guinée Burkina Faso 3B- Sandy coast with straight longitudinal profile, presence WEATHERED SEDIMENT Bissau of back-lagoons, depressions or channels parallel to the Water body lagoon FORMATIONS WITH INCLUSIONS shore (500m to 2km from the shoreline) OF HARDPAN AND RESISTANT ROCK Guinée Dam reservoir Benin 3C- Sandy coast with straight longitudinal profile, presence INDICATIVE BATHYMETRY of back-lagoons, depressions or channels parallel to the K - Clay, sandy, pebbly materials 0 to 5 meters shore (less than 500m from the shoreline) WETLANDS AND MARSHES from lipmestone and marno- limestone to ferruginous Sierra Alluvial plains cuirasses 5 to 10 meters Leone 4 - SANDY AND ROCKY COAST IN STEPS Nigeria (Headlands and coves) Tb -Sans to clay materials from Hydromorphic alluvial plains the "terre de barres" formation 10 to 20 meters 4A- Wide coves with a low radius of curvature Libéria Côte d'Ivoire Ghana Togo Undifferentiated wetlands Shoals Gr - Sandy materials from more 4B- Frequent rocky headlands Sand-mud banks Salt marshes (sebkhras) or lessweathered sandstone # Margins of salt marshes (sebkhras) Reefs -shoals 5 - ROCKY COAST Ct - Loose or partially consolidated pre-quaternary sediment formations Isolated shoals of under 20m situated seaward Bathymetry Mangroves of the main 20m isobath are not schown. 0 m 250 m EAM - GEOME, EOS.D2C - Environment and Development Network - www.eco-evaluation.org This cartography is a working document provided for illustrative purposes only and is not intended to be used as a substitute 7° W for official topographic or hydrographic documents. Maritime country borders are not shown, as the boundary delimitation has no legal standing. 6° W 5° W 4° W.