The water crisis facing California – in pictures

Mustafah Abdulaziz has spent years documenting humanity's relationship to a precious natural resource - water. His latest work focuses on the challenges facing California, a highly populated state and a major agricultural center. Water: California was the first prize winner in the Syngenta photography award professional commission category for 2014-15, and will be on display at the National Geographic Museum in Washington DC from 12 November to 30 January 2017