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Contour Channel Walk, Banyowla Regional Park

Whadjuk Noongar Country

Built in the 1930's, the Contour Channel in Banyowla Regional Park was created to carry water from Canning Dam to the metro area. The trail is mostly flat following the contour of the hills, however there are two steep sections where the channel was siphoned in to pipes to convey the water to the other side of the valley.
Located just 30 minutes drive south of the Perth CBD, the trail offers great views, an abundance of wildflowers during the months of August to November and an insight into some interesting local history.

Contour Channel Banyowla Regional Park P H A V C 2 +3 Gallery
Bush Walk
Trail difficulty

There are a few steep sections.
Trail is mostly loose gravel paths.

Trail difficulty

Moderate trail that may have short steep hills, rough surface, many steps or some rock hopping. Directional signage. Some bushwalking experience and moderate fitness required.

  • Length 7km
  • Est. time 1-3 hours
  • Dog friendly
  • Return
Today

12°C

17°

12°

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The Contour Channel walk follows a series of man-made concrete channels and steel and cast-iron pipelines along the contours of the Darling Scarp through Roleystone and Kelmscott. The project was a Depression era public works scheme and constructed, mostly by manual labour, between July 1935 and December 1936 to carry potable water from just below Canning Dam through the hills to a pumping station on the hills above Gosnells by following the natural contours of the Canning Valley and scarp - hence it was entirely gravity-fed. The channel supplied drinking water to the metropolitan area of Perth from 1940 to 1975.
The walk trail passes through forests of Marri and Flooded Gums and offers great views over Perth City and the Swan Coastal Plain. The area nearer to Canning Mills Road has a rich and diverse range of wildflowers from July to November.
Kangaroos and Black cockatoos can often be seen throughout the woodlands here.

The trail can be accessed from Lloyd Hughes Park, Turner Road or from Canning Mills Road. Please note there is only a small amount of off-road parking available from Canning Mills Road.

This trail is part of the following destinations:

Visit Armadale

Welcome to Whadjuk Noongar country, where the Perth Hills meet the Swan Coastal Plain.
Hike amongst majestic Jarrah and Marri woodlands, rich with wildlife, wildflowers and history. 
Stroll along ancient gorges,...

Perth Hills Armadale Visitor Centre

(08) 9394 5410

National Parks

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Roleystone

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Be trail ready

Here is everything you need to know before visiting this trail.

Time / Duration

2 to 3 hours

Length

7km return

Elevation

Steep sections.

Trail Access

By road, 2WD. There is a small amount of parking just off Canning Mills Road, look for the sign for Banyowla Regional Park.

Trail Start

Banyowla Regional Park, Canning Mills Road, Kelmscott.

Get directions

Trail End

When to go

All year round. For wildflowers the best time is August to November.

What’s the weather like?

Bush Walk

Class 3

Moderate trail that may have short steep hills, rough surface, many steps or some rock hopping. Directional signage. Some bushwalking experience and moderate fitness required.

Additional information

There are a few steep sections.
Trail is mostly loose gravel paths.

What To Pack

Hazards & Warnings

Avoid entering the park on high fire risk days.
Snakes may be active during the warmer months - August to April.

Prohibited items

Off-road vehicles and fires prohibited.

Facilities

  • Dog Friendly
  • Lookouts
More tips for being Trail Ready

Today Aug 08, 11:21am

12°C

Feels like 11°C

Max 17°

Min 12°

Precipitation: 100%

Visibility: 8.243km

Wind: 15.96km/h SW

8-day forecast

Sat

17°

12°

Sun

17°

14°

Mon

17°

11°

Tue

17°

11°

Wed

16°

15°

Thu

16°

14°

Fri

19°

14°

Sat

20°

15°

Weather data provided by:

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Wildflower Wanderer

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5 trail goers have rated this trail as 4 out of 5!

We love to hear from people who've been on our Western Australian trails, so it would be most appreciated it if you wanted to leave a review.

Toby Syers

Reviewed 23 Jul 2026, 6:22pm

Beautiful views, lots of path options, make sure you go to the carpark slightly further down the road - lots of space on a red gravel carpark on the left - since the other entrance is blocked to the public
Lani Tuckfield

Reviewed 17 Jul 2026, 4:03pm

Very small carpark. It’s a nice view and fairly easy flat walk for the first 1.5 ish km (that’s all I did). Nice to go and take the dog and wasn’t crowded.
Profile photo for Annette Clark
Annette Clark

Reviewed 7 Jul 2026, 12:23pm

Nice views but not sign posted along the trail. Difficult to get lost though - just follow the pipeline and water channel.
Untidy and rubbish ridden, at the turning point. Pleasant walk but not amazing.
Lauren Ilich

Reviewed 13 Jun 2026, 3:31pm

Nice track and views. Dog friendly.
Andrew Priest

Reviewed 27 May 2023, 5:14pm

It is an enjoyable walk with some history thrown in. It is not marked so it is important to download the KML file for use in your preferred bushwalking app. I use Locus Maps on Android and it did the track.

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