How Many Lakes Are in Canada? Why the Numbers Differ

Canada has more than 2 million lakes, according to the Canada Water Agency. A second figure, more than 875,000 lakes, also appears in current Canadian government data.

Both are valid, but they measure different things. The 875,000 figure counts lakes larger than 0.1 square kilometres, or 10 hectares, while the broader national estimate includes many smaller lakes.

At a Glance

For a general description of Canada, more than 2 million lakes is the clearest answer. For comparisons between countries, the 875,000+ lakes larger than 0.1 km² figure is more useful because it applies a defined minimum size.

How Many Lakes Are There in Canada?

Canada has over 2 million lakes overall. In March 2026, the Canada Water Agency described the country as having more lakes than any other nation.

For a more standardized count, the 2026 Canada’s Changing Climate Report identifies more than 875,000 lakes with a surface area greater than 0.1 km². Those lakes alone cover almost 9% of Canada.

The gap between the two totals comes largely from Canada’s enormous number of small water bodies. As the minimum size used in a survey increases, the number of qualifying lakes drops sharply.

That pattern also appears in international comparisons. Using a consistent minimum lake size, Canada remains far ahead among the countries with the most lakes.

Why Do Estimates of Canada’s Lake Count Differ?

There is no single minimum size that every lake inventory must use.

A broad national estimate can include small lakes that a standardized global dataset excludes. Researchers comparing countries therefore need a common threshold so that the totals describe roughly the same thing.

Canada’s 2026 climate assessment uses 0.1 km² as the cutoff for its comparable lake count. That is equivalent to:

• 10 hectares
• about 25 acres
• roughly 14 standard soccer fields

Any lake below that size falls outside the 875,000+ total.

The same effect becomes even clearer at higher thresholds. Statistics Canada reports 31,752 lakes larger than 3 km², but only 563 larger than 100 km².

So the different numbers are not necessarily competing estimates. They are counts based on different definitions.

Does Canada Have the Most Lakes in the World?

The Canada Water Agency states that Canada has more lakes than any other country.

When lakes larger than 0.1 km² are compared, Canada’s share is striking. Its 875,000-plus lakes account for approximately:

• 62% of the world’s lakes by number
• 32% of global lake surface area
• 7% of global lake volume

These percentages apply to the standardized lake dataset cited in Canada’s 2026 climate assessment. They should not be interpreted as a count of every pond and tiny water body on Earth. 

The size threshold matters here. Saying that Canada contains 62% of the world’s lakes is most accurate when the 0.1 km² minimum is included with the statistic.

Why Does Canada Have So Many Lakes?

Much of Canada’s lake-filled landscape is a legacy of repeated glaciation.

During the last Ice Age, enormous ice sheets covered much of the country. Moving ice eroded bedrock, enlarged existing depressions and shifted huge quantities of sediment. When the glaciers retreated, water collected in many of the basins left behind.

The process was especially important across the Canadian Shield, the vast region of ancient rock extending through much of central and eastern Canada. Its uneven bedrock surface, combined with glacial erosion, created countless places where water could accumulate.

That combination of geology and glaciation is the main reason Canada has so many lakes, particularly across central, eastern and northern parts of the country.

Where Are Most of Canada’s Lakes?

Canada’s lakes are far from evenly distributed.

The 2026 climate assessment says permanent bodies of water are concentrated mainly in central-eastern and northern Canada.

Lake-rich areas include large parts of:

• Ontario
• Quebec
• northern Manitoba
• northern Saskatchewan
• Northwest Territories
• Nunavut
• Newfoundland and Labrador

Many of these regions were heavily reshaped by continental glaciers and overlap with the Canadian Shield.

This helps explain the distinctive geography visible on maps of northern Ontario, Quebec and northern Canada, where land is broken up by thousands of lakes and interconnected waterways.

How Much of Canada Is Covered by Lakes?

Lakes larger than 0.1 km² cover almost 9% of Canada. 

An older but broader Statistics Canada measure puts lakes and rivers together at about 12% of the country’s surface area. 

The figures are measuring different categories:

• Almost 9% refers to lakes larger than 0.1 km².
• About 12% includes both lakes and rivers.

This is why figures for Canada’s water coverage can appear inconsistent when the underlying definition is not stated.

How Many Large Lakes Does Canada Have?

Canada’s lake abundance is not simply the result of millions of small water bodies.

Statistics Canada records:

• 31,752 lakes larger than 3 km²
• 563 lakes larger than 100 km²

The agency also notes that Canada has more total lake area than any other country. 

The decline from millions of lakes overall to 563 above 100 km² shows how strongly the total depends on size. It also makes clear that Canada has an exceptional number of substantial lakes as well as smaller ones.

What Are the Largest Lakes in Canada?

Some of the largest freshwater lakes on Earth lie partly or entirely within Canada.

For lakes shared with the United States, comparing total lake area with Canadian area only can be misleading. Canadian government tables often report only the portion lying within Canada. Environment and Climate Change Canada, for example, lists the Canadian portions of Lake Huron at about 38,300 km² and Lake Superior at about 29,800 km². 

Among lakes located entirely within the country, the leading examples are:

Great Bear Lake is the largest lake entirely within Canada. Canada’s 2026 climate assessment confirms that distinction, while Statistics Canada records its area at 31,328 km². 

Great Slave Lake is the next largest entirely Canadian lake and is also the deepest lake in North America. 

The Great Lakes are a different case because Canada shares four of them with the United States. Together, the Great Lakes contain roughly 18% of the world’s fresh surface water. 

Does Canada Have 20% of the World’s Freshwater?

The often-repeated claim that Canada has 20% of the world’s freshwater needs a qualifier.

Canada’s lakes, rivers and wetlands hold around 20% of the world’s surface freshwater, according to the 2026 Canada’s Changing Climate Report.

That does not mean Canada holds one-fifth of all freshwater on Earth.

Freshwater is also stored underground, in glaciers and ice sheets, in soil and elsewhere in the water cycle. The 20% figure refers specifically to surface freshwater held in lakes, rivers and wetlands.

So, How Many Lakes Does Canada Really Have?

The most useful answer is:

Canada has more than 2 million lakes overall. More than 875,000 of them are larger than 0.1 km². 

The first figure describes Canada’s lakes broadly. The second gives researchers a defined threshold for comparing countries consistently.

Canada’s extraordinary lake abundance comes from both its size and its glacial history. Ice sheets repeatedly reshaped huge areas of the landscape, leaving behind an immense network of basins that later filled with water.

The result is a country where lakes are not simply isolated landmarks. Across large parts of Canada, they are one of the defining features of the landscape.

Frequently Asked Questions