<Ul> <Li> In Baluchistan, Pakistan, the development of new small - scale irrigation projects depleted the water resources of nomadic tribes traveling annually between Baluchistan and Gujarat or Rajasthan, India </Li> <Li> After the closure of the Kainji dam, Nigeria, 50 to 70 per cent of the downstream area of flood - recession cropping was lost </Li> </Ul> <Li> In Baluchistan, Pakistan, the development of new small - scale irrigation projects depleted the water resources of nomadic tribes traveling annually between Baluchistan and Gujarat or Rajasthan, India </Li> <Li> After the closure of the Kainji dam, Nigeria, 50 to 70 per cent of the downstream area of flood - recession cropping was lost </Li> <P> Irrigation projects may reduce the fishing opportunities of the original population and the grazing opportunities for cattle . The livestock pressure on the remaining lands may increase considerably, because the ousted traditional pastoralist tribes will have to find their subsistence and existence elsewhere, overgrazing may increase, followed by serious soil erosion and the loss of natural resources . The Manatali reservoir formed by the Manantali dam in Mali intersects the migration routes of nomadic pastoralists and destroyed 43000 ha of savannah, probably leading to overgrazing and erosion elsewhere . Further, the reservoir destroyed 120 km2 of forest . The depletion of groundwater aquifers, which is caused by the suppression of the seasonal flood cycle, is damaging the forests downstream of the dam . </P>

Is irrigation a local national or global issue