The drainage system in Dar es Salaam is enormous and complex, with hundreds of thousands of drains, often alongside roads, ranging from enormous 3-metre-deep concrete channels along highways to 5-cm-deep hand-dug ditches draining individual home sites. To help reduce flooding, we can map the drains and analyse them in specialised hydrological modelling software.
PICTURE: (Kushoto) Chekecheo la Taka. PICHA: (Kulia) Mtaro Usiojengewa Mfumo wa mifereji ya maji Dar es Salaam ni mkubwa na mgumu, mamia na maelfu ya mifereji mara nyingi kando ya barabara, Mara nyingi zinaanzia urefu wa mita tatu mifereji ya kujengwa pembeni ya barabara hadi sentimeter tano za mifereje iliyochimbwa na watu wenyewe kutoka kwenye makazi yao.