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The largest of all dams supplying Perth, South Dandalup Dam is a popular destination all year for its tall trees, rich bird life, and close proximity to the historic timber town of Dwellingup.

Dam information

  • Capacity – 138.01 billion litres
  • Catchment area – 311km2
  • Reservoir length – 2km
  • Wall height (above lowest foundation) – 43m

Visitor information


  • Picnic areas with free gas barbecues and picnic tables
  • Toilets (including accessible)
  • On-site parking

Opening hours

South Dandalup Dam is open every day of the week until 5pm. For more information please contact us on 13 13 75.


  1. From Perth, take Kwinana Freeway, or Tonkin or Albany Highway to Armadale
  2. Follow South Western Highway to North Dandalup township
  3. Turn left at Del Park Road and follow for 18km

What to do

There is nothing like a country picnic amongst WA’s jarrah trees. Have lunch, use the free gas barbecues, and set up at a table in the picnic area located at the top of the dam wall.

Enjoy the spectacular view of the dam at the lookout.

For bird lovers there is an abundance of native species to find including robins, finches and blue wrens. You might also catch a glimpse of a kangaroo or wallaby.

Take gorgeous photos of the colourful flowers during wildflower season from July to November.

Why not visit Dwellingup while you’re here? Only 8km away it offers charming craft shops and a Forest Heritage Centre for you to browse.


For operational enquiries please contact 13 13 75.

Map of South Dandalup Dam

Planning a visit?

When visiting a dam, please follow these simple rules to ensure you and your family have a fun, memorable, and safe experience. 

  • Obey directional and informational signs
  • Keep to pathways, roads and recreational areas
  • Be aware of uneven ground and walking hazards
  • Children must be within view of a responsible adult at all times
  • Dogs are not permitted on site
  • Swimming, canoeing, fishing and marroning is not permitted
  • Drone use is not permitted
  • Do not climb walls, fences, bridges, pipework or other operational infrastructure
  • Do not trespass into signposted operational and ‘No Entry’ areas
  • Never attempt to operate taps, valves or controls
  • Do not deface safety and security signage
  • Keep emergency and operational access gates and roadways clear

People and domestic animals naturally carry pathogens that can be transferred into streams and reservoirs when they have contact with the water. The pathogens can be difficult to remove, putting our drinking water at risk and potentially making people sick. There are also restrictions on other activities such as off-road driving, camping, lighting fires and littering. Failure to comply with these rules may result in an infringement or prosecution.

All Perth’s metropolitan and regional dams are proclaimed Public Drinking Water Source Areas and are protected under the Metropolitan Water Supply Sewerage and Drainage Act 1909, the Country Areas Water Supply Act 1947 and the Water Services Act 2012. Access is not permitted on the reservoirs or in the streams flowing into it. Failure to comply may result in prosecution.

Please report unmarked safety hazards, suspicious behaviour or pollution to 13 13 75.

For additional information about any of our dams, please call us on 13 13 85.