The Group worked together to share information on incidents and risks across Wales, compiling them to form a comprehensive record of all surface water flood incidents across Wales.
Cydweithiodd y Grŵp i rannu gwybodaeth am ddigwyddiadau a risgiau ledled Cymru, gan eu casglu ar ffurf cofnod cynhwysfawr o’r holl ddigwyddiadau llifogydd dŵr wyneb ledled Cymru.