Improve rainfed agriculture in Tunisia through water harvesting

Improve water resource management in rainfed agriculture through water harvesting techniques in Tunisia. Over 75% of global arable land is rainfed, with Tunisia relying on rainfed systems across 75% of its land area, receiving less than 300 mm annual rainfall. Water harvesting, including traditional gheire dams, controls runoff, reduces erosion, and enhances soil fertility. These practices are critical for sustainable agriculture in arid and semi-arid regions facing climate change and increasing drought risk. Small-scale water storage supports crop productivity during dry periods and combats desertification. The approach offers a viable, low-cost alternative to costly water sources like desalination.