Rivers and streams are the lifeblood upon which most of the other Catchment's assets depend.
The Catchment has more than 9849 km of streams. 30% of the Catchment's streams are in good condition as measured by the Index of Stream Condition (ISC). The index is a measure of a stream's change from natural or ideal conditions. The Catchment has 166 km of streams that are regarded as 'ecologically healthy'.
Many of the Catchment's streams are important habitat for the Nationally vulnerable Murray Cod (Maccullochella peelii peelii) and the Sevens Creeks supports one of only two viable populations of the Nationally endangered Trout Cod (Maccullochella macquariensis).