IN EGYPT’S VAST DESERT, Siwa Oasis supports a town of 35,000 people. It also attracts tourists who come for camel rides, sandboarding, ancient ruins, and salty lakes. But these bodies of water are a sign of trouble in paradise.
Before the 1980s, Siwa’s only source of water was 200 naturally flowing springs. To expand agriculture in the region, farmers drilled thousands of wells to access groundwater in the aquifers below. The wells supplied more water for irrigation, but without a well-planned drainage system in place, excess water produced salty drainage lakes and caused waterlogging and salinization of the soil. Ironically, too much water in this desert attraction is leading to the deterioration of agriculture, killing cash crops like date palms, which are crucial to creating the humid microclimate of the…