Green Lake, Horsham

Blue-Green Algae Warning - Green Lake, Horsham

Last update
21 May 2025

Reason: Blue-Green Algae

Regular testing has detected levels of blue-green algae above levels considered safe for recreation use at Green Lake, Horsham.

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.

See more information

Water levels

Recreational activities permitted

Features & Facilities

Seasonal activities permitted

Current

47%

Last year

62%

Overview

Green Lake is an off-stream reservoir that was originally used for irrigation purposes. Since construction of the Wimmera Mallee Pipeline, Green Lake is no longer used as a water supply reservoir, but plays an important role in managing the water quality within the headworks system. Green lake also offers a variety of recreational opportunities.

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/