Do you need a licence to fish Glen Mervyn Dam?

Yes. A South-West Freshwater Angling Licence from DPIRD covers all freshwater angling south of 29°S and above tidal influence, which includes Glen Mervyn Dam, and anglers under 16 are exempt. Marron require a separate recreational marron licence on top of that one.

Can you use drop nets for marron at Glen Mervyn Dam?

No. Glen Mervyn is a snare-only water under the Fish Resources Management Regulations, so a single marron pole snare is the only legal method here. Within 50m of the water the only gear you may possess is that pole snare, rods and lines and a landing net, which puts drop nets and scoop nets out of bounds at the water's edge whether the season is open or not. The season runs from 12 noon on 8 January to 12 noon on 5 February each year.

Is Glen Mervyn Dam open for trout all year?

Yes, and so is every other trout water in the state, because WA has no trout season anywhere. Trout are 300mm minimum and sit inside a mixed freshwater bag of four counted with freshwater cobbler, and the dam is stocked annually, so spring after the release is the strongest stretch.

Can you camp at Glen Mervyn Dam?

Yes, free bush camping is available on the western shore under shaded jarrah, but the way in is a narrow unsealed track that will not take a towed caravan, so it suits tents, swags and 4WD setups. Camp and cooking fires are not permitted at all, so bring a gas stove. The eastern shore is the day-use side, with a picnic area, toilets, picnic tables and a boat ramp.

Can you take a dog to Glen Mervyn Dam?

Yes, on lead. The serious catch is that fox baiting occurs nearby and the baits are highly toxic to domestic animals, so keep the dog leashed and out of the surrounding bush rather than letting it range while you fish.

Bite Compass

Bite Forecast

Glen Mervyn Dam (Collie)

Fri 04 Sep 2026 · Australia/Perth

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📍 Glen Mervyn Dam (Collie)

last quarter · 53%

Weather: Rainy Wind: W 287° · 22 km/h Pressure: 1012.2 hPa

★★★☆☆

Medium Fish Activity

▸ Why this score?

At the day's peak · 6:00 pm

Solunar Major window

Time of day Dusk

Wind W 11 km/h

Moon last quarter all day

Learn how the score works →

Activity Forecast

Now

Feeding Windows

Best times to fish based on activity score.

Peak

5:00 pm → 7:00 pm

Good

5:30 am → 7:00 am

1h 30m

First light

6:05 am

Last light

6:24 pm

Sunrise

6:30 am

Sunset

5:59 pm

Moonrise

12:40 am

Moonset

10:25 am

Hourly Wind

High Bite Hours Highlighted

12am

🌧️

12°

←︎

287°

22 km/h

1am

🌧️

12°

←︎

283°

23 km/h

Now

🌧️

11°

←︎

265°

21 km/h

3am

🌧️

11°

←︎

266°

20 km/h

4am

☀️

10°

←︎

265°

20 km/h

5am

☀️

10°

←︎

270°

19 km/h

6am

☀️

10°

←︎

263°

19 km/h

7am

☀️

10°

←︎

266°

18 km/h

8am

☀️

12°

←︎

255°

21 km/h

9am

☀️

13°

↙︎

241°

21 km/h

10am

🌧️

14°

↙︎

236°

20 km/h

11am

☁️

14°

↙︎

233°

17 km/h

12pm

☁️

14°

↙︎

239°

15 km/h

1pm

☁️

15°

↙︎

243°

15 km/h

2pm

☁️

15°

↙︎

246°

14 km/h

3pm

☀️

15°

←︎

255°

13 km/h

4pm

☀️

15°

←︎

267°

12 km/h

5pm

☀️

14°

←︎

284°

12 km/h

6pm

☀️

11°

←︎

292°

11 km/h

7pm

☀️

9°

←︎

277°

9 km/h

8pm

☀️

8°

←︎

270°

8 km/h

9pm

☀️

7°

←︎

268°

6 km/h

10pm

☁️

8°

↙︎

243°

4 km/h

11pm

☁️

8°

↙︎

214°

1 km/h

Wind Map

Wind data (text)

Now: 22 km/h W (287°).

Wind map data: ECMWF HRES (operational), updated every 6 hours. Not for navigation.

Open in the full fishing map (beta) →

Feeding Windows

Best times to fish based on activity score.

Peak

5:00 pm → 7:00 pm

Good

5:30 am → 7:00 am

1h 30m

First light

6:05 am

Last light

6:24 pm

Sunrise

6:30 am

Sunset

5:59 pm

Moonrise

12:40 am

Moonset

10:25 am

Nearby spots

Wellington Dam (Collie) 15.0 km

Species at this spot

Weekly Bite Forecast

Glen Mervyn Dam (Collie) + nearby Perth spots. Thursday 6pm — top windows, conditions, what's biting.

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