Realising an evergreen dearm? : a master plan for re-hydration of a part of Voi River basin, Southeast Kenya

In the Voi River basin, a problematic situation has been occurred with decreasing of the vegetation cover and amount of water storage and increasing of soil erosion. Several factors have a role in this process. Firstly, the morphology of the basin defines the hydrologic cycle with unequal dividing of the rainfall in the basin, which means much rainfall in the mountain ranges Taita Hills and Sagala Hills and little rainfall on the plains. Secondly, the historical regional developments caused decreasing of the vegetation cover in the area by various forms of human activity. The report provides a contribution for changing the problematic situation in the basin by development of a master plan to implement small water-retaining structures for realising re-hydration in a part of the Voi River basin. Re-hydration should lead to evergreen forests in the basin.