Why we need to keep urban stormwater out of dry rivers

I was asked to give a talk to a meeting at Environmental Justice Australia’s community forum for Rivers of the West last night.  As usual, I banged on about the importance of stormwater retention and harvesting to protect rivers and streams, including in dry areas like the west of Melbourne. …

Continue reading

How much baseflow should be flowing down any particular stream?

Matt Burns of the WERG has developed a new tool that has joined the urbanstreams.net family.  The Baseflow Estimator can help assess how much water should be flowing down any stream (or drain) across the Melbourne region.  Matt explains…  For undeveloped, unregulated catchments, very little rainfall becomes streamflow. For example…

Continue reading

Delineating catchment boundaries made easy

One of the central tenets of stream ecology—at least since Noel Hynes’ seminal lecture “The stream and its valley” (Hynes, 1975)—is that the catchment is a primary determinant of the structure and function of its stream. If a stream ecologist or a stream manager is to understand the behaviour of…

Continue reading