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Blue Lake Mount Gambier: The Famous Color-Changing Lake In Australia

Blue Lake near Mount Gambier is a lovely lake that changes hues throughout the year. It has been praised as the ideal trekking location for adventurers because of the surrounding mountains. Do you know why this lake can change its color? Let’s find out!

Blue Lake in Mount Gambier: The Color-Changing Lake In Australia


A number of amazing walking routes with panoramic views of the water below and the hills above are located around Blue Lake / Warwar in Mount Gambier, South Australia. It is midway between Melbourne and Adelaide. Every November, the Blue Lake undergoes an overnight transformation from a deep bluish-grey to bright cobalt with turquoise flecks in the shallows. It lasts until late March, when it fades back.

One of the main tourist attractions in the southeast is Blue Lake. It is the most distinctive and stunning feature of the area. During the summer, it is noted for its deep blue color. The lake is morphologically and chemically distinct from the other lakes. It is also preserved as the town’s water source, keeping it in almost pristine condition.

Why Can This Lake Change Colors?

The following summarizes the prevailing idea from recent studies regarding the famed color change of the lake, from grey in winter to bright blue in summer.

Late November and early December see a brief period of color shift, which deepens during the summer. Blue Lake’s normally clear water turns a vivid shade of blue in the summer for two reasons.

First, more light reaches the Lake’s surface during the summer since the sun is higher in the sky than in the winter. As a result, more blue light is reflected back from the lake by tiny particles. Pure water tends to scatter light in the blue to the blue-green range, while tiny particles like calcium carbonate crystals and dissolved organic matter (tannins) scatter light in the yellow to the brown range.

Second, as the lake surface warms in the spring, dissolved carbon dioxide is released as a gas into the atmosphere, the pH rises, and the water’s calcite content is oversaturated, causing it to precipitate out. Small calcite crystals grow, and as they sink to the lake’s bottom, they catch organic waste, “cleaning” the water as they go. On the lake’s bottom, a fresh layer of calcite that is 3 mm thick and 1 mm thick of organic material accumulates every year.

It is commonly acknowledged that there is an annual calcium precipitation cycle that contributes to the lake’s clarity in the month of November before it turns blue.

Read more 10 Amazing Pink Lakes In Australia You Won’t Believe Exist!

Many Fun Activities You Can Do Here


One of Mount Gambier’s most well-liked tourist destinations is Blue Lake. It is located in an extinct volcanic crater and has distinctive scenery. The lake attracts thousands of people each year with its breathtaking scenery, unusual geological formations, historical buildings, and fascinating stories.

Various lakes, forests, gardens, picnic areas, and viewing platforms may be found along the walking routes. One 3.6-kilometer track circles the entire lake and is accessible to wheelchair users, cyclists, and pedestrians. There are numerous viewpoint points placed along the trail where you can take in the breathtaking views.

Numerous walking routes, cycle paths, and lookouts are available for peaceful strolls or strenuous hikes near Blue Lake. A well-liked recreation area is Valley Lake, which has a playground, picnic tables, BBQs, and a boardwalk.

While most visitors to this state heritage area spend an hour or two taking in the most prominent features, it takes more than a day to fully understand its scope and characteristics. The caravan park offers to lodge inside the state heritage area, although the vicinity also offers a variety of additional accommodations.

The Best Time To Visit Blue Lake In Mount Gambier


The best time to visit Blue Lake Mount Gambier is between November and February. Because that’s around the time, the lake turns a brilliant blue. Then for the rest of the year, the lake goes back to a bluish-gray color except around the sides.

Through this article, we have explored Blue Lake Mount Gambier / Warwar, a famous color-changing lake in Australia. Please give your feedback by leaving a comment below!

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