Looks more like Acacia rubida to me; the inflorescences are too long for A.obtusata, I think, althuogh A. obtusata occurs throughout that region (as does A. rubida).
I must admit I wasn't really looking at the infloresecence, I thought the lack of mucro on the phyllodes and the oblanceolate shape suggested O.obtusata over falcate(ish) as in A.rubida?