In 2019, nearly 42,000 properties in Wales were at high or medium risk of flooding from rivers and over 60,000 properties at high or medium risk of tidal flooding.
Yn 2019, roedd bron i 42,000 o eiddo yng Nghymru mewn perygl uchel neu ganolig o lifogydd o afonydd a mwy na 60,000 o eiddo mewn perygl uchel neu ganolig o lifogydd llanw.