More than 300 homes reported flood damage to Derry City and Strabane District Council.
Six people were rescued by emergency services on Saturday evening as torrential rain fell across the area.
It is understood 70mm of rain fell in the space of five hours, overwhelming river banks and drainage systems.
Mr O’Dowd will visit Derry, Eglinton, Drumahoe and Strabane to see the affect on residents and businesses.
The Department for Infrastructure (DfI) said it was “well prepared for this event” despite coming under fire for how it responded at the weekend.
Any home that has been damaged by the flooding can register their property with Derry and Strabane council to avail of the Department for Communities Emergency scheme.
This fund is available to assist householders by providing up to £1,000 to help make their home fit to live in following inspections by council staff.
Business premises affected by flood damage do not qualify for financial support under this scheme.Tags: