Kate and Emily had both been pupils at Craig Cefn Parc Primary School in Clydach, where prayers were said in memory of the girls on the first anniversary of their death.
Elsewhere, about 25 firefighters from Mid and West Fire Service were called to 30 flooded houses in Kingrosia Park, Clydach, Swansea on Saturday afternoon and say the situation has worsened while they have been there.
The close Swansea Valley community is still trying to come to terms with the killings and the fact that their home is now synonymous with the loss of three generations of the same family - the Clydach murders.