S. M. Adelana, Monitoring Groundwater Resources in Sub-saharan Africa: Issues and Challenges, pp.103-113, 2009.

S. M. Adelana, T. A. Abiye, D. C. Nkhuwa, C. Tindimugaya, and M. S. Oga, Urban groundwater management and protection in Sub-Saharan Africa, Applied Groundwater Studies in Africa, IAH Selected Papers on Hydrogeology 13, pp.1-7, 2008.

P. J. Ashton, A. R. Turton, H. G. Brauch, U. O. Spring, J. Grin et al., Water and security in Sub-Saharan Africa: emerging concepts and their implications for effective water resource management in the Southern African Region Facing Global Environmental Change, pp.661-674, 2009.

P. Bachelery and J. Coudray, Carte Géologique Des Comores: Carte Volcanologique De La Grande Comore Au 1/50 000ème Et Carte Volcano-tectonique, 1993.

B. , C. Waternet, and . Wa-net, Capacity Building for Groundwater Management in West and Southern Africa, BGR, p.65, 2007.

A. Bourhane, J. Comte, J. Join, and K. Ibrahim, Groundwater prospection in Grande Comore Island: joint contribution of geophysical methods, hydrogeological time-series analysis and groundwater modelling Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala, pp.385-401, 2015.

E. Braune and Y. Xu, Groundwater management issues in Southern Africa: an IWRM perspective, Water SA, vol.34, issue.6, pp.699-706, 2008.

E. Braune and Y. Xu, The Role of Ground Water in Sub-Saharan Africa, Ground Water, vol.32, issue.no. 4, pp.229-238, 2010.
DOI : 10.1111/j.1745-6584.2009.00557.x

W. Cai, A. Santoso, G. Wang, E. Weller, L. Wu et al., Increased frequency of extreme Indian Ocean Dipole events due to greenhouse warming, Nature, vol.112, issue.7504, pp.254-258, 2014.
DOI : 10.1029/2006JC003798

C. O. Clark, P. J. Webster, and J. E. Cole, Interdecadal Variability of the Relationship between the Indian Ocean Zonal Mode and East African Coastal Rainfall Anomalies, Journal of Climate, vol.16, issue.3, pp.548-5541520, 2003.
DOI : 10.1175/1520-0442(2003)016<0548:IVOTRB>2.0.CO;2

J. Comte, J. Join, O. Banton, and E. Nicolini, Modela????o da resposta da ??gua subterr??nea doce ??s altera????es no clima e na vegeta????o em ilhas de coral, Hydrogeology Journal, vol.6, issue.89, 1905.
DOI : 10.2136/vzj2006.0092

P. Döll, Vulnerability to the impact of climate change on renewable groundwater resources: a global-scale assessment, Environmental Research Letters, vol.4, issue.3, 2009.
DOI : 10.1088/1748-9326/4/3/035006

M. Edmunds, Limits to the availability of groundwater in Africa, Environmental Research Letters, vol.7, issue.2, 2012.
DOI : 10.1088/1748-9326/7/2/021003

S. Foster, A. Tuinhof, and H. Garduñogardu?garduño, Groundwater in sub-Saharan Africa: a strategic overview of developmental issues, Applied Groundwater Studies in Africa, IAH Selected Papers on Hydrogeology 13, pp.9-21, 2008.

S. Foster, A. Tuinhof, and F. Van-steenbergen, Managed groundwater development for water-supply security in Sub-Saharan Africa: Investment priorities, Water SA, vol.38, issue.3, 2012.
DOI : 10.4314/wsa.v38i3.1

URL : https://www.ajol.info/index.php/wsa/article/download/80963/71189

P. H. Gleick, Basic Water Requirements for Human Activities: Meeting Basic Needs, Water International, vol.3, issue.2, pp.83-92, 1996.
DOI : 10.1080/02508069108686108

. Global-water and . Partnership, Integrated water resources management, Technical Advisory Committee (TAC) Background Papers Available at: http://www.gwp.org, pp.4-20, 2000.

. Global-water and . Partnership, The Policy Guidance and Operational Tools on IWRM, 2002.

S. Hastenrath, D. Polzin, and C. Mutai, Diagnosing the Droughts and Floods in Equatorial East Africa during Boreal Autumn 2005???08, Journal of Climate, vol.23, issue.3, pp.813-817, 2001.
DOI : 10.1175/2009JCLI3094.1

J. Hinkel, S. Brown, L. Exner, R. J. Nicholls, A. T. Vafeidis et al., Sea-level rise impacts on Africa and the effects of mitigation and adaptation: an application of DIVA, Regional Environmental Change, vol.29, issue.3, pp.207-224, 2012.
DOI : 10.2989/AJMS.2007.

V. R. Barros, C. B. Field, D. J. Dokken, M. D. Mastrandrea, K. J. Mach et al., Part B: Regional Aspects Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, IPCC, 2014a. Climate Change 2014a: Impacts, Adaptation, and Vulnerability

C. B. Field, V. R. Barros, D. J. Dokken, K. J. Mach, M. D. Mastrandrea et al., Part A: Global and Sectoral Aspects Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, IPCC, 2014b. Climate Change 2014b: Impacts, Adaptation, and Vulnerability

J. Join, J. Comte, A. Bourhane, and H. Soule, Tests méthodologiques en géophysique en vue de l'implantation de forages d'eau sur l'île de La Grande Comore.P rojet Pilote de gestion du service public de l'eau en milieu rural sur l, 2013.

K. Knüppe, The challenges facing sustainable and adaptive groundwater management in South Africa, Water SA, vol.37, issue.1, pp.67-79, 2011.
DOI : 10.4314/wsa.v37i1.64110

A. M. Macdonald, H. C. Bonsor, B. É. Dochartaigh, and R. G. Taylor, Quantitative maps of groundwater resources in Africa, Environmental Research Letters, vol.7, issue.2, pp.240091748-9326, 2012.
DOI : 10.1088/1748-9326/7/2/024009

P. Mapfumo, S. Adjei-nsiah, F. Mtambanengwe, R. Chikowo, and K. E. Giller, Participatory action research (PAR) as an entry point for supporting climate change adaptation by smallholder farmers in Africa, Environmental Development, vol.5, pp.6-22, 2013.
DOI : 10.1016/j.envdev.2012.11.001

J. M. Marete, An assessment of water resources and integrated water resources management (IWRM) strategy in Bahari sub-basin, Kilifi District, 2006.

I. Marobhe and M. Songo, Report on the study of groundwater resources at Kilwa Kisiwani, Kilwa district, and Lindi region, Unpubl. Geol. Report, 2006.

L. Mehta and S. Movik, Flows and Practices: Integrated Water Resources Management (IWRM) in African Contexts, IDS Working Papers, vol.31, issue.5, 2014.
DOI : 10.1016/S0305-750X(03)00017-2

URL : https://opendocs.ids.ac.uk/opendocs/bitstream/123456789/3523/1/Wp438.pdf

I. Mohamed, L'eau en Grande Comore : étude de cas d'un petit espace insulaire abondamment arrosé mais en situation de pénurie d'eau, 2012.

S. H. Mohamed and S. A. Othman, Etude causale sur la disponibilité de la ressource en eau et la sécurité de l'approvisionnement en eau potable aux Comores, 2006.

A. Mukherjee, D. Saha, C. F. Harvey, R. G. Taylor, K. M. Ahmed et al., Groundwater systems of the Indian Sub-Continent, Journal of Hydrology: Regional Studies, vol.4, pp.1-14, 2015.
DOI : 10.1016/j.ejrh.2015.03.005

A. Mumma, M. Lane, E. Kairu, A. Tuinhof, and R. Hirji, Kenya groundwater governance case study The World Bank, Water Papers. Water and Sanitation Program (WSP), 2011.

D. Munga, S. Mwangi, H. Ong-'anda, J. U. Kitheka, S. M. Mwaguni et al., Vulnerability and pollution of groundwater in Kisauni The Netherlands, Groundwater pollution in Africa. Taylor and Francis (Balkema), pp.213-228, 2006.

J. K. Musingi, S. M. Kithiia, and B. N. Wambua, The urban growth of Mombasa coastal town and its implication for surface and groundwater resources, Impacts of Urban Growth on Surface Water and Groundwater Quality. Proceedings of an International Symposium Held During IUGG 99, the XXII General Assembly of the International Union of Geodesy and Geophysics. at Birmingham, UK 18, 1999.

, Integrated Coastal Zone Management Action Plan for Kenya, NEMA National Environment Management Authority, p.76, 2010.

C. J. Nicholas, P. N. Pearson, P. R. Bown, T. D. Jones, B. T. Huber et al., Stratigraphy and sedimentology of the Upper Cretaceous to Paleogene Kilwa Group, southern coastal Tanzania, Journal of African Earth Sciences, vol.45, issue.4-5, pp.431-466, 2006.
DOI : 10.1016/j.jafrearsci.2006.04.003

C. Onyancha, A. Khaemba, and B. Sabuni, Aquifer storage and recovery and surface basins for a greener Kilifi District, Nile Water Sci. Eng. J, vol.3, issue.3, pp.26-33, 2010.

J. N. Pretty and S. D. Vodouhê, Using rapid or participatory rural appraisal, Improving Agricultural Extension, pp.47-55, 1997.

N. S. Robins, J. Davies, J. L. Farr, and R. C. Calow, The changing role of hydrogeology in semi-arid southern and eastern Africa, Hydrogeology Journal, vol.21, issue.4, pp.1483-1492, 2006.
DOI : 10.3362/0262-8104.2003.022

N. S. Robins, A review of small island hydrogeology: progress (and setbacks) during the recent past, Quarterly Journal of Engineering Geology and Hydrogeology, vol.46, issue.2, pp.157-165, 2013.
DOI : 10.1144/qjegh2012-063

I. A. Shaaban, Y. H. Ramzy, and A. A. Sharabassy, Tourism as a tool for economic development in poor countries: the case of Comoro Islands, Afr. J. Bus. Econ. Res, vol.8, issue.1, pp.127-145, 2013.

G. Steyl and I. Dennis, Revis??o dos aqu??feros de ??reas costeiras em ??frica, Hydrogeology Journal, vol.39, issue.9, pp.217-225, 2010.
DOI : 10.5194/hessd-5-2523-2008

C. C. Ummenhofer, S. Gupta, A. England, M. H. Reason, and C. J. , Contributions of Indian Ocean Sea Surface Temperatures to Enhanced East African Rainfall, Journal of Climate, vol.22, issue.4, pp.993-1013, 2001.
DOI : 10.1175/2008JCLI2493.1

, The UN-Water Status Report on the Application of Integrated Approaches to Water Resources Management, UNEP, pp.978-92, 2012.

, World Population Prospects: The 2010 Revision. UN Department of Economic and Social Affairs, Population Division United Nations Development Plan UNDP Comores: perspectives de mises en valeur des eaux souterraines pour l'alimentation en eau des agglomerations de l'ile de Ngazidja, United Nations Unpubl. Techn. Report No. DP, vol.60, 1987.

A. Vafeidis, B. Neumann, J. Zimmerman, and R. J. Nicholls, MR9: analysis of land area and population in the low-elevation coastal zone (LECZ), 2011.

L. Van-niekerk and D. Van-niekerk, Participatory action research: Addressing social vulnerability of rural women through income-generating activities, J??mb??: Journal of Disaster Risk Studies, vol.2, issue.2, pp.127-144, 2009.
DOI : 10.4102/jamba.v2i2.20

L. A. Vincent, E. Aguilar, M. Saindou, A. F. Hassane, G. Jumaux et al., Observed trends in indices of daily and extreme temperature and precipitation for the countries of the western Indian Ocean, J. Geophys. Res.: Atmos, vol.116, issue.D10, pp.1961-2008, 1984.

K. Walraevens, I. C. Mjemah, Y. Mtoni, and M. Van-camp, Sources of salinity and urban pollution in the Quaternary sand aquifers of Dar es Salaam, Tanzania, Journal of African Earth Sciences, vol.102, pp.149-165, 2015.
DOI : 10.1016/j.jafrearsci.2014.11.003

C. S. Watson, N. J. White, J. A. Church, M. A. King, R. J. Burgette et al., Unabated global mean sea-level rise over the satellite altimeter era, Nature Climate Change, vol.48, issue.9, pp.565-568, 2015.
DOI : 10.1109/TGRS.2009.2037220

M. A. Watto and A. W. Mugera, Econometric estimation of groundwater irrigation efficiency of cotton cultivation farms in Pakistan, Journal of Hydrology: Regional Studies, vol.4, pp.193-211, 2015.
DOI : 10.1016/j.ejrh.2014.11.001

A. D. Werner, M. Bakker, V. E. Post, A. Vandenbohede, C. Lu et al., Seawater intrusion processes, investigation and management: Recent advances and future challenges, Advances in Water Resources, vol.51, pp.3-26, 2013.
DOI : 10.1016/j.advwatres.2012.03.004

URL : http://citeseerx.ist.psu.edu/viewdoc/download?doi=

, World Bank, 2014. Low income economies classification, http://data.worldbank.org/about/country-classifications Total dissolved solids in drinking-water. Background document for preparation of WHO Guidelines for drinking-water quality No. WHO, World Bank, 2014. Climate change knowledge portal, 2003.

, Water resources development in Africa, 4th World Water Forum, 2006.