The Mosul offensive has already started. A first step is a refugee camp being built in Baashiqah Mount, 30km northeast of Mosul.
The United Nations estimates one million people will flee Mosul during the operation. Duhok Province has a 450km-long border with Mosul.
Five locations have been chosen for refugee camps: Jambur, Hatarah, Tal Mus, Zilkan and Hassan Sham. Most of the camps are in recently recaptured areas.
The Mayor of Zilkan area says that since the Mosul operation is imminent, the camps must be ready within one month.
Zilkan camp is just 30 km away from Mosul. The camp can accommodate about 10,000 refugees.