The floods might not have been Camerons fault, but anyone who thinks the coalition have managed the government response to these floods competently is in cloud cuckoo land.
And trying to blame the last administration, or trying to excuse the cutting of hundreds of EA staff as "trimming the fat" is risible.
One of the main reasons the EA have been hampered in their response was the change in Treasury rules on spending for flood defences, insisting on an 8:1 return on investment ( for comparison, the Treasury is only insisting on a 2.3:1 return on investment for HS2) on any flood defence project, hampering or shelving many proposed defence programmes. This also limited the amount of money available for dredging.
And that is just dealing with the effects of the flood; Dropping of regulations and changes in DEFRA rules has contributed to the extent and severity of the flooding this time round.
http://www.theguardian.com/commentisfree/2014/feb/17/farmers-uk-flood-maize-soil-protection