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Beautiful Maps of the World’s Watersheds

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Nothing is more fundamental to life than water – and this is particularly evident in a country like Egypt, which has been aptly described by Greek historian Herodotus as the “Gift of the Nile”.

In Egypt, an astonishing 95% of the population lives alongside the mighty Nile, which is the world’s longest river at 4,258 mi (6,853 km) and also the only major source of freshwater in an otherwise arid desert landscape.

The World’s Watersheds

The Nile isn’t alone in creating the right conditions for life. Rivers of all sizes help form the world’s watersheds, and together they comprise a “circulatory system” that pumps life into every corner of the globe.

Today’s stunning maps, via geographer Szűcs Róbert, divide our planet’s watersheds into colorful catchment areas, and provide an informative look at how water flows across continents.

European Watersheds

When Rivers Take the Long Way ‘Round

Grade school physics teaches us that liquid water will take the most available path of least resistance. Sometimes though, that most available path can take water from mountains clear across a continent before reaching an ocean.

river basin map south america

Nowhere is this more evident than in Peru, home of the glacier-packed Cordillera Blanca. As rain and meltwater begins flowing from the peaks of the Andes Mountains, there are two diverging paths to the ocean.

The journey to the Pacific Ocean is a quick one, and there are small rivers at regular intervals along the coast of Peru.

Because trade winds blow east-to-west in that region, most of the water flows down the eastern side of the Andes, the beginning of a journey across the continent (as demonstrated by the light blue section of Róbert’s South America map.)

Without the Andes acting as a backstop for rain, the Amazon rainforest would not exist in its current scale and form.

When Three Become One

united states watershed map

In the United States, the dominant drainage basin is the Jefferson-Mississippi-Missouri River system (shown in pink on the map above.) This massive basin collects water from over 40% of the contiguous U.S., and comes into contact with two Canadian provinces and 31 states before terminating at the Gulf of Mexico.

The Top Ranked Rivers

The Amazon discharges far more water than any other river on earth, dumping more water per second into the ocean than the next four largest rivers combined. That makes the Amazon a clear winner in this category.

In terms of drainage area though, the Amazon is not as dominant:

largest rivers drainage

In fact, there are multiple rivers that cover massive drainage areas. This includes the Congo in Africa, as well as the mighty Mississippi, which is neck-and-neck with the Nile.

For more, view the full collection of maps here.

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History

Mapped: The Territorial Evolution of the U.S.

From the Thirteen Colonies to present-day USA, this animation is a detailed look at how borders have shifted throughout the nation’s history.

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Mapped: The Territorial Evolution of the U.S.

The sun (almost) never sets on the American Empire.

The United States is the third largest country in the world, with a vast territory extending beyond the borders of the contiguous states. To be exact, the United States is made up of 50 states, nine uninhabited territories, five self-governing territories, one incorporated territory, and one federal district (Washington D.C.). The boundaries of the country haven’t changed much in recent years, but the lines on the map have shifted numerous times in history, through both negotiation and bloodshed.

Today’s above animation, by u/Golbwiki, is the perfect visual aid to understand how the United States evolved from the Thirteen Colonies to its current form.

Here are five of the largest expansion events in U.S. history.

us territorial expansion map

1803: Louisiana Purchase

Napoléon Bonaparte didn’t just have a huge impact on Europe, he also altered the course of history in the New World as well. The French General was waging an expensive war in Europe, and began to view the Louisiana Territory as a burden – as well as a potential source of income. In 1803, he offered up all 828,000 square miles for the famously low price of $15 million.

This massive land purchase comprises nearly 25% of the current territory of the United States, stretching from New Orleans all the way up to Montana and North Dakota.

1819: Adams–Onís Treaty

Spanish explorers first established a presence in Florida as far back as 1565, but 250 years later, Spain had done little to cement its foothold in the region. The Spanish realized they were in poor position to defend Florida should the U.S. decide to seize it.

In 1819, Secretary of State John Quincy Adams negotiated the signing of the Florida Purchase Treaty, which officially transferred Florida to the United States after years of negotiations. There was no official cost of purchase, but the U.S. government agreed to assume approximately $5 million of claims by U.S. citizens against Spain.

1845: Texas Annexation

The newly created Republic of Texas, which broke away from Mexico in the Texas Revolution, was peacefully annexed by the United States in 1845. In one fell swoop, the U.S. acquired 389,000 square miles of former Mexican territory.

1848: Mexican Cession

Shortly after the Texas Annexation, tensions between Mexico and the U.S. flared up anew.

Congress declared war on Mexico over a boundary dispute in 1846, and after a relatively brief armed conflict – known as the Mexican–American War – the two countries signed the Treaty of Guadalupe-Hidalgo.

The treaty recognized Texas as a U.S. state, and the United States took control of a huge parcel of land that includes the present-day states of California, Nevada, and Utah, as well as portions of Arizona, Colorado, New Mexico, and Wyoming. Mexico received $15 million in the arrangement, but saw the size of their territory halved.

1867: Alaska Purchase

In the aftermath of the Crimean War, Alexander II began exploring the possibility of selling Alaska. Similar to Spain’s foothold in Florida earlier in the century, the Russian Emperor recognized the possibility of American incursions into the territory, which they were not in a good position to defend against.

We must foresee that [the U.S.,] will take the afore-mentioned colonies from us and we shall not be able to regain them.

– Grand Duke Konstantin of Russia

After an all-night negotiation session on March 30, 1867, Alaska was sold to the United States for $7.2 million – the equivalent of $109 million in 2018. Alaska officially became a state in 1959.

Scratching the Surface

The examples above are only a brief overview of the complex evolution of shifting territorial claims in America.

For those who want to take a deep dive into the shifting borders of America, here is an extremely thorough animation, also by the same author:

expansion of U.S. territory

Of course, colonial expansion in North America didn’t occur in a vacuum. For an Native American perspective on this topic, check out this animated map.

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Energy

Mapped: Fossil Fuel Production by Country

These four animated cartograms show the nations leading the world in fossil fuel production, in terms of oil, gas, coal, and total hydrocarbons.

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Fossil fuels exist as a double-edged sword for most countries.

On one hand, they still make up a dominant piece of the current energy mix, and oil is still seen as a crucial resource for achieving geopolitical significance. It’s also no secret that fossil fuels are a driver for many economies around the world.

But with governments and corporations counting carbon emissions and mounting concerns about climate change, reliance on these same fuels will not last forever. As attitudes and policies evolve, they will continue to see a reduced role going forward.

Visualizing Fossil Fuels by Country

So, which countries are pumping out the most hydrocarbons?

Today’s cartograms come from 911Metallurgist, and the animated maps resize each country based on their share of global fossil fuel production.

Below, you’ll see four cartograms that cover oil, gas, coal, and total fossil fuel production.

Crude Oil Production

The United States leads this category, producing about 18% of the world’s total oil:

Oil production by country

Although the U.S. is the number one producer globally, it should be noted that the country doesn’t have the same quantity of oil reserves as other leading nations.

Weirdly, Venezuela has the exact opposite problem. The country has the most oil reserves in the world, but currently only sits as its 12th biggest producer.

Natural Gas Production

In terms of gas, the U.S. leads again with a 20% share of global production. Russia is also a gas powerhouse, with a 17.3% share.

Natural gas production by country

After the U.S. and Russia, it’s a fairly steep dropoff in terms of natural gas production. Countries like Iran, Canada, Qatar, and China are the next most significant players, but they each only produce 4-6% of the global total.

Coal Production

Coal use may be on the decline, but China still produces a whopping 45% of the world’s coal.

Coal production by country

China’s current relationship with coal is an interesting one.

Every year, coal has become less important in China’s energy mix – in 2011 it represented 70% of energy consumption, and by 2018 it had fell to 59%.

Despite this meaningful progress, China’s economy has grown so fast, that coal use has essentially held steady in absolute terms. Meanwhile, the country’s production of coal has actually grown slightly over the same timeframe.

Total Fossil Fuel Production

Finally, here is the sum of all three above categories, converted to metric tonnes:

Total fossil fuel production by country

The United States produces 20% of all global fossil fuels, with Russia and Iran rounding out the top three. After that comes Canada, which produces just under 5% of all fossil fuels globally.

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