Contribution sur la question des inondations « Les inondations : ce qu’il faut d’abord savoir pour une meilleure prévention et une gestion efficace du phénomène. »
La gestion efficace des inondations est devenue une préoccupation majeure des populations des centres urbains et même parfois du monde rural au Sénégal.
Malgré les multiples efforts (initiatives et projets) de l’Etat du Sénégal visant à lutter contre les inondations à travers le Plan décennal (2012-2022) doté d’un budget prévisionnel global de 766,988 milliards de FCFA en trois phases, le constat est que le phénomène persiste encore et toujours.
La capitale, Dakar, fait face à une urbanisation galopante et une pression foncière extraordinaire avec des constructions tous azimuts qui ne sont malheureusement pas accompagnées d’un plan d’aménagement et d’assainissement adéquat.
Pour mieux comprendre cette lancinante question des inondations, il est important et nécessaire de mettre à contributions les scientifiques évoluant dans le domaine.
Plusieurs travaux scientifiques avec des recommandations fortes ont été menés par des géologues, hydrogéologues, hydrologues, environnementalistes, urbanistes, géotechniciens et géomaticiens pour une meilleure approche et une gestion durable des inondations.
C’est dans ce sens que, l’Association des Jeunes Géologues et Environnementalistes du Sénégal (AJGES) qui regroupe en son sein des géologues, des hydrogéologues, des géophysiciens, des géotechniciens, des spécialistes de l’aménagement du territoire et de l’environnement, participe au débat scientifique pour une meilleure compréhension du phénomène des inondations. Cette démarche est ainsi basée sur des propositions réalisables pour une contribution à la résolution des difficultés annuelles liées aux inondations que vivent certains de nos concitoyens.
Nous revenons ainsi sur les causes et les conséquences :
Causes des inondations
Les facteurs qui expliquent les inondations liées aux eaux pluviales sont globalement d’ordre climatique et anthropique :
Les facteurs climatiques
Cumul de pluies de forte intensité sur une très courte période qui fait que le débit d’eau arrivant sur le sol devient supérieur à la capacité d’infiltration.
Faiblesse de système fonctionnel de drainage des eaux pluviales dans certaines zones ou leur absence totale dans d’autres.
Occupation irrégulière et croissante de l’espace :
Occupations des zones dépressionnaires ou bas-fonds
Occupations des zones où la nappe phréatique affleure
Occupation des zones où le sol présente une forte capacité de rétention d’eau
L’artificialisation du sol avec des matériaux imperméables.
Mauvais comportement de la population qui raccorde clandestinement leurs fosses septiques aux canaux d’évacuation des eaux pluviales ou qui considère les réseaux de drainage des eaux pluviales comme des dépotoirs d’ordures. Ces ordures réduisent considérablement le diamètre des canaux, ce qui demande plus de pression pour évacuer les eaux pluviales.
Conséquences sur la communauté
Des pertes en vies humaines ;
Destructions d’infrastructures publics (routes, ponts etc.), de maisons, de centres commerciaux, dégradations des terres agricoles etc. ;
Grand problème de mobilité des personnes et des biens qui ralentit considérablement l’économie du pays ;
Développements de maladies cutanées et diarrhéiques ;
Déplacements des familles touchées qui nécessitent un coût énorme ;
Contamination de certaines sources d’eau potable ;
Au regard de l’analyse du phénomène et de ses multiples conséquences,
l’AJGES formule les recommandations suivantes :
Cartographie des zones à risque d’inondation pour identifier les zones dites no aedificandi et interdire leur occupation dans l’avenir puisque les mesures correctives sont très couteuses sans aucune garantie d’efficacité durable ;
Le déplacement et la réinstallation progressive des populations sinistrées installées dans des bas-fonds sur des zones bien aménagées et équipées de réseau fonctionnel d’assainissement autonome et de drainage des eaux pluviales, offrant un meilleur cadre de vie ;
La réalisation d’ouvrages structurants, efficaces et durables de drainage et/ou de stockage des eaux pluviales dans toutes les zones exposées aux inondations pour une bonne adaptation aux épisodes de pluies de forte intensité ;
La restructuration urbaine des zones et quartiers inondés basée sur le respect strict d’un plan directeur d’urbanisme ;
L’amélioration de la politique d’aménagement du territoire.
Mise à contribution la DSCOS pour l’interdiction d’aménagement à usage d’habitat des zones no aedificandi sur l’ensemble du territoire
Implication effective d’une masse critique de spécialistes et chercheurs du domaine pour la recherche de solutions durables
Suivi régulier de la dynamique des zones basses (flux d’eau, niveau de la nappe)
Sensibilisation des populations pour la préservation des ouvrages de drainage des eaux pluviales afin d’éviter le dépôt d’ordures sur les caniveaux
Mise en place d’une cellule d’alerte et de veille dans chaque commune ou quartier pour disposer des informations réelles sur les risques et vulnérabilités
Enfin, il faut une bonne planification et une harmonisation des stratégies en commençant par les priorités. /
Géologue Environnementaliste et Géotechnicien
Président de l’Association des Jeunes Géologues et Environnementalistes du Sénégal (AJGES)
187 thoughts on “Gestion Des Inondations: Les Dix Propositions De L’Association Des Jeunes Géologues Du Sénégal”
This site was… how do you say it? Relevant!! Finally I have found something which helped me.
I have been absent for some time, but now I remember why I used to love this blog. Thank you, I?¦ll try and check back more frequently. How frequently you update your web site?
Heya i’m for the primary time here. I found this board and I find It truly helpful & it helped me out a lot. I hope to offer one thing back and aid others like you helped me.
Simply wish to say your article is as astounding.
The clarity in your submit is simply cool and i could assume you
are a professional in this subject. Fine with your permission let me to grasp your RSS feed to keep updated with
coming near near post. Thank you one million and please continue the gratifying work.
I think this is among the most important info for me. And i’m glad reading your article. But should remark on some general things, The website style is ideal, the articles is really nice : D. Good job, cheers
When some one searches for his essential thing, therefore he/she wishes to be available that in detail, so that thing is maintained over here.|
When I initially commented I clicked the « Notify me when new comments are added » checkbox and now each time a comment is added I get three emails with the same comment. Is there any way you can remove me from that service? Cheers!|
Thanks for finally talking about > blog_title < Loved it!|
Hi! This is kind of off topic but I need some guidance from an established blog. Is it very hard to set up your own blog? I’m not very techincal but I can figure things out pretty fast. I’m thinking about setting up my own but I’m not sure where to start. Do you have any tips or suggestions? Thanks|
After checking out a few of the blog posts on your blog, I really like your technique of blogging. I bookmarked it to my bookmark webpage list and will be checking back soon. Take a look at my website too and tell me your opinion.|
I’m curious to find out what blog platform you have been utilizing? I’m experiencing some minor security problems with my latest site and I’d like to find something more safe. Do you have any solutions?|
Aw, this was an incredibly good post. Spending some time and actual effort to generate a superb articleâ€¦ but what can I sayâ€¦ I put things off a whole lot and don’t manage to get anything done.|
What a stuff of un-ambiguity and preserveness of valuable knowledge on the topic of unexpected emotions.|
I’m not sure exactly why but this weblog is loading very slow for me. Is anyone else having this issue or is it a problem on my end? I’ll check back later on and see if the problem still exists.|
You actually make it seem really easy together with your presentation but I to find this topic to be really something that I think I’d never understand. It seems too complex and very wide for me. I am looking forward for your subsequent post, I’ll attempt to get the hold of it!|
I think this is one of the so much significant information for me. And i’m happy studying your article. But wanna commentary on some general issues, The web site style is perfect, the articles is really excellent : D. Good process, cheers|
Iâ€™m not that much of a online reader to be honest but your sites really nice, keep it up! I’ll go ahead and bookmark your site to come back later. All the best|
Wonderful article! This is the kind of info that are supposed to be shared across the net. Disgrace on the seek engines for no longer positioning this submit higher! Come on over and consult with my website . Thanks =)|
Hi! This post could not be written any better! Reading this post reminds me of my old room mate! He always kept chatting about this. I will forward this page to him. Fairly certain he will have a good read. Thank you for sharing!|
continuously i used to read smaller articles that as well clear their motive, and that is also happening with this post which I am reading at this place.|
Hello there, simply became alert to your blog through Google, and found that it is truly informative. I am going to be careful for brussels. I’ll be grateful should you proceed this in future. Lots of people will probably be benefited from your writing. Cheers!|
Wow that was unusual. I just wrote an really long comment but after I clicked submit my comment didn’t appear. Grrrr… well I’m not writing all that over again. Anyways, just wanted to say superb blog!|
I’ve been surfing online greater than 3 hours today, but I never discovered any fascinating article like yours. It’s beautiful value sufficient for me. Personally, if all web owners and bloggers made good content as you probably did, the web can be a lot more useful than ever before.|
Great goods from you, man. I have understand your stuff previous to and you are just too wonderful. I actually like what you have acquired here, really like what you are saying and the way in which you say it. You make it entertaining and you still take care of to keep it smart. I cant wait to read much more from you. This is actually a terrific site.|
Very good post! We are linking to this particularly great post on our website. Keep up the good writing.|
Hello mates, pleasant paragraph and fastidious urging commented at this place, I am in fact enjoying by these.|
My relatives every time say that I am wasting my time here at web, however I know I am getting familiarity every day by reading such good articles or reviews.|
I all the time used to study post in news papers but now as I am a user of internet thus from now I am using net for content, thanks to web.|
This article gives clear idea in support of the new people of blogging, that in fact how to do blogging and site-building.|
Howdy would you mind sharing which blog platform you’re working with? I’m going to start my own blog in the near future but I’m having a tough time selecting between BlogEngine/Wordpress/B2evolution and Drupal. The reason I ask is because your design seems different then most blogs and I’m looking for something completely unique. P.S Sorry for getting off-topic but I had to ask!|
I’ve been browsing online more than 2 hours today, yet I never found any interesting article like yours. It’s pretty worth enough for me. In my opinion, if all web owners and bloggers made good content as you did, the net will be a lot more useful than ever before.|
Very good blog post. I definitely love this website. Keep it up!|
An outstanding share! I have just forwarded this onto a friend who had been conducting a little research on this. And he actually ordered me lunch due to the fact that I stumbled upon it for him… lol. So let me reword this…. Thanks for the meal!! But yeah, thanx for spending time to talk about this subject here on your web site.|
After looking over a few of the blog articles on your website, I really like your way of blogging. I saved as a favorite it to my bookmark website list and will be checking back soon. Take a look at my web site as well and let me know your opinion.|
Its like you read my mind! You appear to know so much about this, like you wrote the book in it or something. I think that you can do with some pics to drive the message home a little bit, but instead of that, this is great blog. An excellent read. I’ll certainly be back.|
Thank you for some other informative web site. The place else could I am getting that type of information written in such an ideal way? I’ve a challenge that I’m simply now running on, and I’ve been at the look out for such information.|
It is not my first time to pay a quick visit this website, i am browsing this website dailly and take good data from here every day.|
Your style is really unique in comparison to other folks I’ve read stuff from. I appreciate you for posting when you’ve got the opportunity, Guess I will just book mark this web site.|
I visited various blogs however the audio feature for audio songs existing at this web page is in fact fabulous.|
Fantastic goods from you, man. I have understand your stuff previous to and you are just too magnificent. I actually like what you have acquired here, really like what you’re saying and the way in which you say it. You make it entertaining and you still care for to keep it wise. I cant wait to read far more from you. This is actually a tremendous web site.|
thu mua vải minh quân chém người dã man
Iâ€™m not that much of a internet reader to be honest but your sites really nice, keep it up! I’ll go ahead and bookmark your website to come back in the future. Cheers|
Very quickly this website will be famous among all blogging visitors, due to it’s pleasant articles|
I have been surfing online more than 4 hours today, yet I never found any interesting article like yours. It’s pretty worth enough for me. Personally, if all website owners and bloggers made good content as you did, the net will be a lot more useful than ever before.|
Thanks for one’s marvelous posting! I truly enjoyed reading it, you might be a great author. I will make certain to bookmark your blog and will come back sometime soon. I want to encourage you to ultimately continue your great work, have a nice evening!|
Hmm it seems like your site ate my first comment (it was extremely long) so I guess I’ll just sum it up what I wrote and say, I’m thoroughly enjoying your blog. I as well am an aspiring blog writer but I’m still new to the whole thing. Do you have any tips for inexperienced blog writers? I’d really appreciate it.|
Hello to all, since I am truly keen of reading this web site’s post to be updated regularly. It contains good material.|
I think the admin of this website is in fact working hard for his website, because here every data is quality based stuff.|
I love it when individuals come together and share views. Great site, continue the good work!|
Wow, amazing weblog structure! How lengthy have you ever been blogging for? you make running a blog look easy. The overall look of your website is magnificent, let alone the content material!
I think the admin of this web site is really working hard in support of his website, as here every data is quality based stuff.|
Hey there, You have done a fantastic job. I’ll definitely digg it and personally recommend to my friends. I’m confident they will be benefited from this site.|
I am genuinely delighted to glance at this blog posts which contains lots of valuable facts, thanks for providing these data.|
I’m pretty pleased to discover this site. I need to to thank you for your time for this fantastic read!! I definitely savored every little bit of it and I have you saved as a favorite to check out new information in your website.|
Hello i am kavin, its my first occasion to commenting anyplace, when i read this paragraph i thought i could also make comment due to this brilliant article.|
Informative article, totally what I needed.|
Thanks for sharing your thoughts. I truly appreciate your efforts and I am waiting for your next write ups thanks once again.|
We’re a group of volunteers and starting a new scheme in our community. Your web site offered us with valuable information to work on. You have done a formidable job and our whole community will be thankful to you.|
It is perfect time to make a few plans for the longer term and it is time to be happy. I have learn this submit and if I may just I wish to counsel you some fascinating issues or suggestions. Perhaps you can write next articles relating to this article. I want to read even more issues about it!|
It’s fantastic that you are getting ideas from this post as well as from our discussion made at this time.|
Hey there! Quick question that’s entirely off topic. Do you know how to make your site mobile friendly? My weblog looks weird when browsing from my iphone4. I’m trying to find a theme or plugin that might be able to resolve this problem. If you have any suggestions, please share. Thanks!|
Greetings! I know this is somewhat off topic but I was wondering which blog platform are you using for this site? I’m getting fed up of WordPress because I’ve had issues with hackers and I’m looking at alternatives for another platform. I would be great if you could point me in the direction of a good platform.|
I’m curious to find out what blog system you happen to be working with? I’m having some minor security problems with my latest blog and I would like to find something more safe. Do you have any recommendations?|
May I simply just say what a comfort to find somebody that actually understands what they are discussing online. You certainly understand how to bring an issue to light and make it important. More and more people ought to look at this and understand this side of the story. I was surprised you are not more popular because you certainly have the gift.|
Hello, I check your blog regularly. Your story-telling style is awesome, keep it up!|
Hello everybody, here every one is sharing these experience, therefore it’s good to read this weblog, and I used to visit this webpage daily.|
Greetings I am so grateful I found your blog page, I really found you by error, while I was looking on Google for something else, Regardless I am here now and would just like to say many thanks for a remarkable post and a all round entertaining blog (I also love the theme/design), I donâ€™t have time to read it all at the moment but I have saved it and also added your RSS feeds, so when I have time I will be back to read more, Please do keep up the awesome jo.|
Aw, this was an incredibly good post. Taking a few minutes and actual effort to generate a great articleâ€¦ but what can I sayâ€¦ I put things off a whole lot and never seem to get nearly anything done.|
you’re really a just right webmaster. The website loading pace is amazing. It kind of feels that you are doing any distinctive trick. In addition, The contents are masterwork. you have performed a magnificent process on this topic!|
What’s up, I wish for to subscribe for this web site to obtain most recent updates, therefore where can i do it please help.|
Very good post. I’m experiencing some of these issues as well..|
Hello my loved one! I wish to say that this article is awesome, nice written and come with approximately all significant infos. I would like to look more posts like this .|
I am really enjoying the theme/design of your web site. Do you ever run into any internet browser compatibility problems? A small number of my blog readers have complained about my blog not working correctly in Explorer but looks great in Safari. Do you have any recommendations to help fix this issue?|
I was able to find good advice from your blog posts.|
Just desire to say your article is as astonishing.
The clarity for your publish is just cool and that
i can think you are an expert on this subject.
Well with your permission let me to take hold of your
RSS feed to stay up to date with impending post.
Thank you a million and please carry on the enjoyable work.
Very good information. Lucky me I ran across your blog by accident (stumbleupon). I’ve book marked it for later!|
Aw, this was an extremely nice post. Finding the time and actual effort to make a great articleâ€¦ but what can I sayâ€¦ I procrastinate a lot and don’t seem to get anything done.|
Hello, i think that i saw you visited my site thus i came to â€œreturn the favorâ€.I am trying to find things to enhance my website!I suppose its ok to use some of your ideas!!|
Spot on with this write-up, I really think this website needs a lot more attention. I’ll probably be returning to read through more, thanks for the advice!|
I have been browsing online greater than three hours nowadays, but I by no means found any attention-grabbing article like yours. It’s lovely price sufficient for me. In my view, if all website owners and bloggers made excellent content as you did, the internet will be much more useful than ever before.|
I think this is among the most important information for me. And i’m glad reading your article. But want to remark on some general things, The website style is great, the articles is really excellent : D. Good job, cheers|