Digue anti-sel et de retenue des eaux de ruissellement [Senegal]
- Creation:
- Update:
- Compiler: Julie Zähringer
- Editor: –
- Reviewer: Fabian Ottiger
O Pang
technologies_1748 - Senegal
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Expand all Collapse all1. General information
1.2 Contact details of resource persons and institutions involved in the assessment and documentation of the Technology
SLM specialist:
Babacar Ibrahima Birham Bass
ADAF / YUNGAR
Village De Fimela Fimela, Senegal
Senegal
SLM specialist:
Baboucar Gning
République du sénégal - Ministère des Ecovillages, des Bassins de Rétention, des Lacs artificiels et de la Pisciculture - Projet d'appui à la petite irrigation locale (PAPIL)
Senegal
Name of the institution(s) which facilitated the documentation/ evaluation of the Technology (if relevant)
CDE Centre for Development and Environment (CDE Centre for Development and Environment) - SwitzerlandName of the institution(s) which facilitated the documentation/ evaluation of the Technology (if relevant)
Ministère des Ecovillages, des Bassins de Rétention, des Lacs artificiels et de la Pisciculture - Projet d'appui à la petite irrigation locale (PAPIL) - SenegalName of the institution(s) which facilitated the documentation/ evaluation of the Technology (if relevant)
ADAF / YUNGAR Consultants agricoles - Senegal1.3 Conditions regarding the use of data documented through WOCAT
When were the data compiled (in the field)?
15/12/2010
The compiler and key resource person(s) accept the conditions regarding the use of data documented through WOCAT:
Yes
2. Description of the SLM Technology
2.1 Short description of the Technology
Definition of the Technology:
Une technologie permettant de retenir les eaux de ruissellement et de reduire la salinité des terres.
2.2 Detailed description of the Technology
Description:
Ouvrage constitué d un déversoir central en beton armé de 30 m et d'une digue en terre de 400 m.
2.3 Photos of the Technology
2.5 Country/ region/ locations where the Technology has been applied and which are covered by this assessment
Country:
Senegal
Region/ State/ Province:
Région de Fatick, Département de Fatick
Further specification of location:
Arrondissement de Fimela, Communauté rurale de Fimela
Map
×2.6 Date of implementation
If precise year is not known, indicate approximate date:
- less than 10 years ago (recently)
2.7 Introduction of the Technology
Specify how the Technology was introduced:
- through projects/ external interventions
Comments (type of project, etc.):
2009
3. Classification of the SLM Technology
3.1 Main purpose(s) of the Technology
- reduce, prevent, restore land degradation
3.2 Current land use type(s) where the Technology is applied
Mixed (crops/ grazing/ trees), incl. agroforestry
- Agro-silvopastoralism
Comments:
Principaux problèmes d'utilisation des sols (perception des utilisateurs fonciers): absence d'activités agricoles et de patures à cause d'une forte salinisation des sols et de la nappe
Usage futur (final) de la terre (après la mise en œuvre de la technologie SLM): Mélangé: Mp: Agro-pastoralisme
If land use has changed due to the implementation of the Technology, indicate land use before implementation of the Technology:
Mélangé: Ma: Agro-silvopastoralisme
3.4 SLM group to which the Technology belongs
- cross-slope measure
- Digue anti-sel
3.5 Spread of the Technology
Comments:
Total area covered by the SLM Technology is 1 m2.
superficie sous influence de la digue
3.6 SLM measures comprising the Technology
structural measures
- S5: Dams, pans, ponds
Comments:
Main measures: structural measures
3.7 Main types of land degradation addressed by the Technology
chemical soil deterioration
- Cs: salinization/ alkalinization
biological degradation
- Bc: reduction of vegetation cover
water degradation
- Hg: change in groundwater/aquifer level
Comments:
Main type of degradation addressed: Cs: salinisation / alcalinisation
Secondary types of degradation addressed: Bc: réduction de la couverture végétale, Hg: modification dans les nappes phréatiques et aquifères
Main causes of degradation: déforestation / disparition de la végétation naturelle (inclus les feux de forêts) (déforestation due à la coupe de la mangrove), surexploitation de la végétation pour l’usage domestique (surexploitation liée à la pauvreté), sécheresses, autres causes naturelles (avalanches, éruptions volcaniques, topographie extrême, coulée de boue, etc.) Spécifier. (intrusion de l'eau salée)
Secondary causes of degradation: pression de la population, pauvreté / santé, gouvernance / institutionnel (absence de conventions en rapport avec l utilisation des ressources naturelles et octroie de permis aux allochthones)
3.8 Prevention, reduction, or restoration of land degradation
Specify the goal of the Technology with regard to land degradation:
- restore/ rehabilitate severely degraded land
Comments:
Main goals: rehabilitation / reclamation of denuded land
Secondary goals: prevention of land degradation, mitigation / reduction of land degradation
4. Technical specifications, implementation activities, inputs, and costs
4.2 Technical specifications/ explanations of technical drawing
Principales fonctions techniques: contrôle du ruissellement en nappe: rétention / capture, récupération de l'eau / augmentation des réserves d'eau, amélioration de la qualité de l'eau, eau filtrée / solution tampon
Fonctions techniques secondaires: contrôle de la battance ('splash'), augmentation du niveau / recharge de la nappe phréatique
Barrage / poêle / étang
Longueur des bunds / banques / autres (m): 430.00
Matériaux de construction (autre): 30 m de béton + 200 m en terre (latérite) de chaque côté
4.4 Establishment activities
Activity | Type of measure | Timing | |
---|---|---|---|
1. | Fondation | Structural |
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