Lake Lonsdale
Lake Lonsdale
Blue-green Algae - Lake Lonsdale
Last update
12 May 2026
Reason: Blue-green algae
Regular testing has detected levels of blue-green algae above levels considered safe for recreation use at Lake Lonsdale.
We warn the public to avoid direct contact with the water. People may still boat, sightsee and enjoy other activities at the lake that do not involve direct water contact.
Warning signs have been positioned at major recreational areas around the lake and will remain in place while the warning is current.
Blue-green Algae - Lake Lonsdale
Lake Lonsdale
Last update:
12 May 2026
Starting: 21 January 2026
Reason: Blue-green algae
Regular testing has detected levels of blue-green algae above levels considered safe for recreation use at Lake Lonsdale.
We warn the public to avoid direct contact with the water. People may still boat, sightsee and enjoy other activities at the lake that do not involve direct water contact.
Warning signs have been positioned at major recreational areas around the lake and will remain in place while the warning is current.
Overview
Lake Lonsdale is a large, shallow reservoir on the Mt William Creek. It fills from its own catchment and is reliant on natural inflows. Although the catchment can be a substantial producer of water during wet years because of its very large area, it isn't reliable during times of drought. Given its relatively shallow depth, the lake also has high evaporation losses over summer months.
Since the introduction of the Wimmera Mallee Pipeline, the lake is no longer used by GWMWater for domestic or stock water supply, however it's still a key source of water for the environment. Lake Lonsdale also has an important role in the community as a recreational lake in the Stawell area, hosting a number of activities on its northern side, such as boating, fishing, swimming, camping and water skiing.
Be sure to play it safe around water.
Read our information signage before entering the water.
Visit Safe Transport Victoria for a range of resources on water safety: https://safetransport.vic.gov.au/on-the-water/
Recreational activities permitted
Features & Facilities
Seasonal activities permitted
Location
Helpful Information
Camping
in designated areas only (not in sandbar area)
long-term camping (8+ weeks) needs to be approved by our Patrol Officer
camping under trees is not advised as branches and limbs may fall
camp away from other visitors at established camp grounds if camping with dogs
Camp fires
check Country Fire Authority's website or Vic Emergency App for up-to-date information
https://www.cfa.vic.gov.au/warnings-restrictions/total-fire-bans-and-ratings
permitted in properly constructed fireplaces in line with Country Fire Authority's warnings and restrictions https://www.cfa.vic.gov.au/warnings-restrictions/can
fire pits available
fire must be completely extinguished with water, not soil, before the last person leaves
Firewood
fallen timber may be collected as firewood for use within the reserve only
trees are not to be cut down
Portable Generators
must be within 10 metres of the owners tent and closer to the owner's tent than anyone else’s
don't put them in long grass as they can start fires!
refer to Country Fire Authorities 'chainsaws, lawn mowers and other equipment' conditions during fire season https://www.cfa.vic.gov.au/warnings-restrictions/can
Vehicles
must keep to the obvious tracks
not permitted on the beach or sand dunes
speed limit 10 km/h within Lake Lonsdale reserve area
no unregistered motor vehicles including trail bikes
Boating
designated boat ramps must be used
Duck Shooting
duck shooting permitted during duck season depending on seasonal restrictions
Dogs
must be under control at all times and tethered at night
to be kept on a leash in picnic and camping areas or when near other visitors
bring own bag to remove any faeces deposited by your dog
must not enter the water, excluding duck season for the retrieval of ducks
Future planning
We've developed a plan to improve the recreational use of Lake Lonsdale.
See what's planned. Lake Lonsdale Management Plan (621kB, 34 pages)