[4] The Commission asked independent hydrological expert Mark Babister to investigate the operation of Wivenhoe Dam during the flood period.
[7][8] On 5 and 6 February 2012 the Commission conducted a weekend sitting to hear new evidence related to Wivenhoe Dam operators.
[10] On the 6 February, it was announced by Holmes that deputy commissioner Philip Cummins would not attend future hearings involving Seqwater or take his advice on the topic.
[2][15][16][17] Holmes also found that the manual for dam operations used by the engineers was ambiguous, unclear, impractical and not up to date.
However the Commission was incorrect in this regard as it was later found by the CMC (following a six-month investigation) that there was no professional misconduct and the three engineers were cleared of any wrongdoing.
[18][19] The report also recommended that a flood study of the Brisbane River catchment be conducted which includes a wide range of data and should form the basis of a hydrological model so that planners can explore various scenarios.