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Subject:
From:
Haruna Darbo <[log in to unmask]>
Reply To:
The Gambia and Related Issues Mailing List <[log in to unmask]>
Date:
Tue, 16 Aug 2011 15:43:51 -0400
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 The way you protect a village/town/city from flooding is:

1. You prohibit settlement in a floodplain or wetland area.
2. You organize, by zoning, the erection of homes so that water/sewage flows by gravity from the high gradients to lower gradients.
3. At the lowest gradient, you install a collection aqueduct, canal, or gutter that will be MAINTAINED free of sediment and other encumberances.
4. Do not mix drainage of storm water and sewage water in the same conduits.
5. Allow the storm water to run into rivers and seas.
6. Either have all homes install sceptic tanks or suckaways if you can't afford the sewage and storm drain infrastructure for all communities and make sure these units drain leacheate properly so you don't inure localized floods.
Haruna. You do not need a grant from another nation for your own drainage. I am pleased there is no loss of life in this flood. We may not be lucky for another flood. And they will happen. Floods love improperly-drained communities.




Mali
                            
                            
                              
                            
                            
                              
Koro : Inondation à Sana
                            
                            
                              
Sana, un village de 858 habitants dans la commune de Koro, vient de subir une grave inondation. Dans la nuit du 13 au 14 août, environ 80 mm de pluie sont tombés sur la localité. Conséquence : 84 maisons se sont effondrées. L’on ne déplore heureusement aucune perte en vie humaine. Aucun animal n’a été perdu non plus. En plus des maisons détruites, 18 greniers ont été éventrés et un puits à grand diamètre s’est effondré. Au total, 23 des 73 familles que compte le village sont sinistrées. Deux jours après le sinistre, divers objets (ustensiles de cuisine, motos, charrettes) restaient encore enfouis sous les décombres. A la suite de l’inondation, une délégation conduite par l’adjoint au préfet de Koro, Mamadou Issa Coulibaly, et comprenant notamment le maire de Koro s’est rendue dans le village où elle a pu mesurer les dommages. S. N’DJIM (AMAP-Koro) ESSOR



 




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