Large dams and uncertainties. The case of the Senegal River (West Africa)
Dominique Dumas
(1)
,
Michel Mietton
(2, 3)
,
O. Hamerlynck
(4, 5)
,
F. Pesneaud
(6)
,
A. Kane
(7)
,
A. Coly
(8)
,
S. Duvail
(9)
,
M. L. O. Baba
(4)
1
PACTE -
Pacte, Laboratoire de sciences sociales
2 EVS - Environnement, Ville, Société
3 CRGA - Centre de Recherche de Géographie et Aménagement (Lyon 3)
4 IUCN
5 CEH - Centre for Ecology and Hydrology [Wallingford]
6 Faculté de Géographie
7 UCAD - Université Cheikh Anta Diop de Dakar [Sénégal]
8 UGB - Université Gaston Berger de Saint-Louis Sénégal
9 PALOC - Patrimoines Locaux et Gouvernance
2 EVS - Environnement, Ville, Société
3 CRGA - Centre de Recherche de Géographie et Aménagement (Lyon 3)
4 IUCN
5 CEH - Centre for Ecology and Hydrology [Wallingford]
6 Faculté de Géographie
7 UCAD - Université Cheikh Anta Diop de Dakar [Sénégal]
8 UGB - Université Gaston Berger de Saint-Louis Sénégal
9 PALOC - Patrimoines Locaux et Gouvernance
Michel Mietton
- Fonction : Auteur
- PersonId : 946779
S. Duvail
- Fonction : Auteur
- PersonId : 173260
- IdHAL : stephanie-duvail
- ORCID : 0000-0001-5963-3038
- IdRef : 070951047
Résumé
This paper examines the environmental and socio-economic consequences of hydraulic infrastructural changes along the Senegal river valley and estuary. During the 1980s, two dams were built along the valley floor to facilitate hydro-electrical production and regular water supply for crop irrigation. In addition, in 2003, a breach was dug across Barbary Spit to alleviate flooding in the city of Saint-Louis, located near the river mouth. Although these structures helped regulate the river flow, they also resulted in a series of unforeseen impacts. Based on on-site measurements (topometry, water salinity, piezometry), analysis of hydrological data, field observations, and surveys with dam managers, state regional directions (Agriculture, Hydraulics, Fisheries) and local stakeholders (paddy cultivators, market-gardeners, stock-breeders, fishermen), the study examines these often unexpected consequences. The conclusion stresses the urgency of elaborating models of hydraulic management to limit as much as possible the negative consequences of the hydraulic constructions. These models should take into account not only the variety of water uses in the middle valley and delta, but also the water safety and quality (salinity) downriver from Diama Dam.
Domaines
GéographieFormat du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Large dams and uncertainties. The case of the Senegal River (West Africa)
|
Résumé |
en
This paper examines the environmental and socio-economic consequences of hydraulic infrastructural changes along the Senegal river valley and estuary. During the 1980s, two dams were built along the valley floor to facilitate hydro-electrical production and regular water supply for crop irrigation. In addition, in 2003, a breach was dug across Barbary Spit to alleviate flooding in the city of Saint-Louis, located near the river mouth. Although these structures helped regulate the river flow, they also resulted in a series of unforeseen impacts. Based on on-site measurements (topometry, water salinity, piezometry), analysis of hydrological data, field observations, and surveys with dam managers, state regional directions (Agriculture, Hydraulics, Fisheries) and local stakeholders (paddy cultivators, market-gardeners, stock-breeders, fishermen), the study examines these often unexpected consequences. The conclusion stresses the urgency of elaborating models of hydraulic management to limit as much as possible the negative consequences of the hydraulic constructions. These models should take into account not only the variety of water uses in the middle valley and delta, but also the water safety and quality (salinity) downriver from Diama Dam.
|
Auteur(s) |
Dominique Dumas
1
, Michel Mietton
2, 3
, O. Hamerlynck
4, 5
, F. Pesneaud
6
, A. Kane
7
, A. Coly
8
, S. Duvail
9
, M. L. O. Baba
4
1
PACTE -
Pacte, Laboratoire de sciences sociales
( 675 )
- Siège : IEP - BP 48 38040 Grenoble cedex 9
- France
2
EVS -
Environnement, Ville, Société
( 145345 )
- 18 Rue Chevreul
69362 LYON CEDEX 07
UMR 5600
- France
3
CRGA -
Centre de Recherche de Géographie et Aménagement (Lyon 3)
( 394823 )
- 18 rue Chevreul - 69362 Lyon cedex 07
- France
4
IUCN
( 56912 )
- IUCN, 28 Rue Mauverney, 1196 Gland, Switzerland
- Suisse
5
CEH -
Centre for Ecology and Hydrology [Wallingford]
( 141458 )
- Maclean Building Benson Lane, Crowmarsh Gifford, Wallingford OX10 8BB
- Royaume-Uni
6
Faculté de Géographie
( 80370 )
- France
7
UCAD -
Université Cheikh Anta Diop de Dakar [Sénégal]
( 1175215 )
- Université Cheikh Anta Diop de Dakar - Rectorat, BP 5005 Dakar-fann
- Sénégal
8
UGB -
Université Gaston Berger de Saint-Louis Sénégal
( 48348 )
- Route de Ngallèle, B.P. 234 Saint-Louis
- Sénégal
9
PALOC -
Patrimoines Locaux et Gouvernance
( 107710 )
- 43 rue Cuvier - 75005 Paris
- France
|
Comité de lecture |
Oui
|
Vulgarisation |
Non
|
Langue du document |
Anglais
|
Nom de la revue |
|
Date de production/écriture |
2009
|
Audience |
Internationale
|
Date de publication |
2010
|
Volume |
23
|
Numéro |
11
|
Page/Identifiant |
1108-1122
|
Domaine(s) |
|
Référence interne |
|
Financement |
|
Mots-clés |
en
Barbary Spit, breach, management, risks, salinity
|
DOI | 10.1080/08941920903278137 |
Origine :
Fichiers produits par l'(les) auteur(s)
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