Below Bromfield Street Weir

Reach 2 of 2
·
Merri River
9.3 km
Reach length
27
Species recorded
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.
No live gauge
There’s no gauge on this water. Check recent trip reports.
Season
Driving directions

Water and habitat

Nine kilometres from the old weir site at Wollaston down through Warrnambool and Dennington to Lake Pertobe and the sea. Estuary country starts here: tidal water, rock walls and snags along the town reaches, reed beds and sand toward the mouth. It does not fish like the freshwater river above the weir, and it does not carry the same fish or the same rules.

Fish and forage

Estuary perch are the fish of this stretch, strong in the 2020s survey record, with congolli in numbers, eels, smelt and gudgeon around them, and bream and the fish of the coast as the water turns salt toward the mouth. The Victorian Fisheries Authority’s guide notes estuary perch stocked into the water below the weir in some years; the survey record says they are there now. Trout are the river above, not this one.
The perch and bream eat the smelt and the small fish of the estuary, moving with the tide along the edges and holding against the snags and walls.
Black Bream
Acanthopagrus butcheri
Brown Trout
Salmo trutta
Estuary Perch
Macquaria colonorum
Golden Perch
Macquaria ambigua
Rainbow Trout
Oncorhynchus mykiss
Redfin
Perca fluviatilis
Australian Grayling
Prototroctes maraena
Australian Smelt
Retropinna semoni
Bluespot Goby
Pseudogobius olorum
Climbing Galaxias
Galaxias brevipinnis
Common Galaxias
Galaxias maculatus
Congolli
Pseudaphritis urvillii
Dwarf Galaxias
Galaxiella pusilla
Eastern Gambusia
Gambusia holbrooki
Flathead Gudgeon
Philypnodon grandiceps
River Blackfish
Gadopsis marmorata
Sea Mullet
Mugil cephalus
Smallmouth Hardyhead
Atherinosoma microstoma
Smooth Toadfish
Tetractenos glaber
Southern Pygmy Perch
Nannoperca australis
Southern Shortfin Eel
Anguilla australis
Spotted Galaxias
Galaxias truttaceus
Tamar Goby
Afurcagobius tamarensis
Tench
Tinca tinca
Western Carp Gudgeon
Hypseleotris klunzingeri
Yarra Pygmy Perch
Nannoperca obscura
Yelloweye Mullet
Aldrichetta forsteri

When to fish it

The warm months, November to April, and the last hour of light. Estuary perch come to the edges and the structure at dusk and after dark, and the tide decides where they hold. There is no gauge bound to this stretch; the Woodford gauge above tells you what the river is sending down after rain, and a coloured, fresh-pushed estuary is a slow one. Read the water when you get there and do not borrow the freshwater gauge as if it described this water.
THE YEAR ON THIS WATER
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Estuary perch at dusk
Fly · Nov–Apr
The warm months, the last hour of light, and a small dark streamer worked along the snags and rock walls.
Baitfish in the estuary
Food · Oct–Apr
Smelt and the small fish of the estuary move with the tide. The perch and bream follow them, and so should your fly.

How to fish it

Fish it as an estuary edge, not as the inland stream. A six weight, a floating line for the shallow edges and an intermediate as the water deepens toward the mouth, and a leader you can pull a perch away from a snag with. A small dark Woolly Bugger or a baitfish streamer worked slowly along the rock walls and the snags at dusk, with long pauses; the take comes on the drop as often as on the strip. Keep the first cast honest. This water sees more people than the river above, and the fish know it.

Access and safety

Town and estuary banks: walking tracks, road bridges and reserve through Warrnambool and Dennington, with the estuary edge toward Lake Pertobe. A name on a map is not a right of entry, and a track along the bank is shared with everyone else in town. Lake Pertobe is the end of this stretch, not more of it.
The hazards are an estuary’s: soft mud, a tide that turns, and rock walls that are slick at night. Fish the town reaches with a light and a plan.

Regulations

Victorian rules apply. Victoria classifies the Merri differently above and below Bromfield Street Weir, and this is the water below that named site, so the estuary rules govern it rather than the freshwater trout rules. Take the size and bag limits for estuary perch, bream and the rest from the current Victorian recreational fishing guide. The numbers move. Do not take them from this page.

Questions

Sources

Geofabric v3.x — national stream network, complete with polyline geometry
Bureau of Meteorology
Open source ↗
Page reviewed 2026-09-05