Commercial lending and personal lending all fell heavily in January, monthly data from the Australian Bureau of Statistics shows. As with the decline in housing finance already reported, the flooding in southern and coastal Queensland and northern Victoria is believed to be the cause.The ABS said that, seasonally adjusted, commercial finance commitments fell 5.8 per cent in January 2011. Revolving credit commitments fell 9.7 per cent and fixed lending commitments fell 4.0 per cent.In Queensland, commercial finance commitments fell 37 per cent, before seasonal adjustment, in January.However, the level of commercial finance lending in Queensland for that month, while lower than recently, is in line with the most subdued levels of lending at the peak of the GFC and reflects the limits on construction finance at that time.Personal finance commitments fell 9.5 per cent in January 2011, seasonally adjusted. This is the largest fall since March 2008 (which was before the credit crisis seriously took hold).In Queensland, the level of personal loans fell 32 per cent in January, before seasonal adjustment, the lowest level in eight years.