The following problems are faced during floods:
1)Because of flood people loose their homes and houses.
2)Many people gets flushed away in heavy floods and leads to death.
3)Many chemicals gets mixed with water and causes many problems to aquatic animals.
4)The balance of the ecosystem gets disturbed.
5)Its take lots of time to recover from floods.
6)Many water bodies such as rivers, ponds, lakes, etc. get contaminated and leads to unclean water. 
7)Diseases are caused because of drinking contaminated water

and so on.     
thank you 
i hope it helped u..

Problem faced due to flood are as follow
soil erosion take place
houses is destroyed
people also die