Lake Alexander

Situated in East Point Reserve, Lake Alexander provides a picturesque body of water that is popular for recreational activities throughout the year.                                   

Lake Alexander- open                 



Lake Alexander is OPEN for recreation activities.        

view the latest water quality reading


The site of Lake Alexander was originally an area of low-lying coastal marsh. Lake Alexander covers 3.5 hectare and has a maximum depth of 2.8 metres. Its seawater is drawn from nearby Fannie Bay and the water quality is similar to other naturally occurring swimming areas.  

Water Quality Monitoring

The water quality of Lake Alexander is monitored regularly with fortnightly testing. Lake Alexander is tested in several key areas for bacteriological contamination (Enterococci). All testing is carried out in line with requirements set out in the Northern Territory Recreational Microbiological Water Quality Guidelines and our City of Darwin Standard Operating Procedure- Testing and Analysis of Council’s Water Bodies.

Why is Lake Alexander sometimes closed?

In the Wet Season bacteria levels can change depending on the level of rain and other climate conditions. We regularly monitor and test these levels to ensure that Lake Alexander remains safe for recreational use.

Enterococci readings under 200 (per 100ml) are considered safe for recreation activities. Where levels rise above this in any of our tested sites, Lake Alexander will be closed to the public. We continue to monitor and test the water and reopen the lake as soon as Enterococci return to safe levels.

Latest Results

Water quality testing is carried out fortnightly, Enterococci readings under 200 (per 100ml) are considered safe.

Test Date
Reading (per 100ml)
Lake Open




Testing Frequency During Lake Closures

Where bacteria levels require Lake Alexander to be closed, we monitor and test the lake more frequently so it can reopen as soon as possible. 

More Information

For more information or to request the complete results of water quality testing please contact the Climate Change and Environment team at