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Blue green algae warnings

Last updated
Lake Lonsdale

Starting: 4 pm, 4 June 2020

Blue-green algae warning for Lake Lonsdale

Reason: Blue Green Algae Alert

We advise the public to avoid direct contact with water in Lake Lonsdale after monitoring detected levels of blue-green algae above levels considered safe for recreational use.

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 there are elevated levels of blue-green algae.

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What are our water levels like?

Rocklands Reservoir

Last year

Important Information:

Our reservoirs and lakes are open to the public for recreational activities including boat ramps and camp grounds. For information about Rocklands Reservoir camping, visit Forest Fire Management Victoria’s website.Toilets are open for campers and day visitors as per the Tourism Industry Guidelines for coronavirus (COVID-19).

Physical distancing and outdoor gathering requirements apply at all times – including at the boat ramp and on your boat. Check the permitted recreational activities and facilities before your visit.

People living in the Melbourne metropolitan area or Mitchell Shire can only go in and out of these areas for three reasons: shopping for food and supplies, medical care and caregiving, and study or work – if you can’t do it from home. You may also travel outside these areas in an emergency, or as required by law

Exercise and recreation will not be a reason to travel into or out of metropolitan Melbourne and Mitchell Shire.

For more information on boating, visit:


Rocklands Reservoir, located on the Glenelg River, is GWMWater's largest reservoir. It was originally constructed to supply the now decommissioned Wimmera-Mallee Domestic and Stock channel system. In more recent years it has an important role to play in the region as a recreational destination. A unique feature of Rocklands Reservoir is that all entitlement holders, including the environment, are eligible for water supplies from the reservoir.

The reservoir also has six location buoys on the water for each of the six main camp grounds. These buoys help boats locate their position on the lake.


Recreational activities permitted
Features & Facilities

How to contact us

Where to find us
In person
Corporate Office
11 McLachlan Street
Horsham Victoria
By post
PO Box 481
Horsham Vic 3402
By phone
1300 659 961