The last nine kilometres of the Merri, from the old weir site at Wollaston through Warrnambool and Dennington to the estuary at Lake Pertobe — estuary perch, bream and the fish of the coast, on town banks a walk from the car.
Below the site of Bromfield Street Weir the Merri stops being a trout river and becomes Warrnambool’s estuary. It is a second trip in the same town, and on a summer evening when the upper river is too warm to fish honestly, it is the better one.
The weir near Wollaston Bridge came out in 2024, but Victoria still draws its line there. This stretch is the last nine kilometres of the river below that site, through the town and Dennington to Lake Pertobe and the sea: tidal, brackish, walked by dog owners and joggers, and carrying a different set of rules from the freshwater river above.
The fish change with the salt. Estuary perch are the fish of this water, and the 2020s are the strongest decade for them in the survey record, with congolli, eels, smelt and bream and the fish of the coast as the water turns salt toward the mouth. Trout are the river above, not this one.
It is a six-weight-and-a-streamer proposition. Fish the warm months, November to April, in the last hour of light, working a small dark streamer slowly along the snags and the rock walls with long pauses, and let the tide tell you where the fish are holding. The banks are town reserve and walking tracks shared with everyone else in Warrnambool, and the hazards are an estuary’s: soft mud, a tide that turns, and rock walls that are slick at night.
There is no gauge down here. The Woodford station on the freshwater river above tells you what is coming after rain, and a coloured, fresh-pushed estuary is a slow one. The rest you read standing on the bank.