Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Water International 30-46 herding use of by-product feeds water productivity Africa Sahel 2009 fdi:010046576 ENG Water International 0250-8060 ISI:000265023400004 1 10.1080/02508060802677853 https://www.documentation.ird.fr/hor/fdi:010046576 https://www.documentation.ird.fr/intranet/publi/depot/2009-06-08/010046576.pdf 34 Horizon (IRD) Sedentary farmers in the Volta Basin are endangering the activity of transhumant herders relying on grazing ranges between 9 degrees and 11 degrees N. Despite mutual benefits, farmers try to deny them access to water and thereby the possibility to graze their stock on crop residues. This new behaviour is changing the geographical distribution of traditional activities and risks endangering herding activity, a leading economic resource in these regions. Meeting livestock watering requirements is thus a matter of local conflict resolution and good governance. Countries should be encouraged to adopt legislation to maintain or even promote the mobility of herding activities. 098 ; 062 UR183