UNRWA provides a daily emergency situation report on the conflict in Gaza and its humanitarian impact, available on the UNRWA website.
In addition, both UNRWA Commissioner General Pierre Krähenbühl and UNRWA Spokesperson Chris Gunness provide additional updates via Twitter:
As in other crises, UNOSAT is provided overhead imagery to support UN and other humanitarian activities in Gaza. The latest UNOSAT imagery of Gaza can be found here.
The UN Office for the Coordination of Humanitarian Affairs provides daily updates on the situation in Gaza. These are available here.
In addition, check out UN OCHA’s ReliefWeb page for information from both UN and other sources on the Gaza crisis.