Amna Mustapha (in yellow dress) and a cousin fill earthen-walled pools with water for their animals near the Breidjing Refugee Camp in Eastern Chad. They dip plastic containers into a six-foot well and then pour the water into the handmade pools. The millet stalks at the edge of the trough keep the cascading water from breaking down the wall. Families take turns using the pools, which must be rebuilt often and will ultimately wash away during the rainy season.