Via ReliefWeb, an OCHA report: Expected humanitarian impact of Mosul operations - Figures as of 14 October 2016. Click or tap through for the full report. Excerpt from the summary:
• In a worst case scenario, the humanitarian operation in Mosul is likely to be the single largest and most complex in the world in 2016.
• Civilians will be at extreme risk during the military campaign from cross-fire, snipers and artillery barrage.
• Tens of thousands of people may be forcibly expelled, trapped between fighting lines, under siege or held as human shields. Chemical weapons may be used.
• Public facilities, thoroughfares and homes may be booby-trapped or contaminated by explosive hazards. Children, the elderly and disabled will be particularly vulnerable. Delays, abuses, and irregularities may occur during screening.
Situation on the ground:
• As many as 1.2-1.5 million people could be affected by military operations in Mosul.
• 200,000 people are expected to be displaced in the first weeks.
• In a worst-case scenario, up to 1 million people could be displaced and 700,000 may need to be accommodated in emergency shelters.
• As many as 100,000 people may cross the border into Syria, seeking safety.
As for funding, OCHA says:
• In July 2016, humanitarian partners appealed for US$284 million to prepare for Mosul. To date, less than half this amount has been received.•Key components of the response, including emergency sites, remain critically underfunded.• In early October, partners revised cost estimates to US$367 million to include final preparations and the first three months of response.