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Everything
about water.

Explore the science, history, geography, and future of the most essential molecule in the universe.

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AT A GLANCE

Water by the Numbers

71%
of Earth's surface is covered by water
Oceans • Rivers • Lakes • Ice
2.5%
of all water is freshwater
Most locked in ice caps & glaciers
97%
of Earth's water is in oceans
Saline water
1.4B
km³ total volume of water on Earth
A constant amount for billions of years

Global Freshwater Withdrawal by Sector

Annual withdrawal in cubic kilometers (approximate)

2023 Data
Agriculture remains the largest consumer of freshwater globally.
STAY UPDATED

Latest from the World of Water

Himalaya · Aug 2026
Himalaya · 26 Aug 2026 Langtang / Trishuli

Why Nepal’s flood was not just rain

An ice–rock collapse high on Langtang Lirung sent water and debris down the Trishuli. The energy came from height and mass — not a week of monsoon filling the river.

Read the explainer →
Crisis 2026 Aug 2026

Lakes Powell and Mead hit new record lows

The two largest U.S. reservoirs reached their lowest recorded levels, with combined storage the smallest since the 1950s as the Colorado River system stays under pressure.

Read full story →
India 2026

Weak monsoon, less hydropower, more groundwater

India’s 2026 southwest monsoon is running below normal. Hydropower has slipped and irrigation leans harder on wells.

Read full story →
Policy Aug 2026

Colorado River cuts after record-low reservoirs

Arizona, California and Nevada face reduced Colorado River deliveries after Powell and Mead hit record lows in August 2026.

Read full story →
WHY IT MATTERS

Water is life.
Understanding it is our responsibility.

From the tiniest cell to the largest galaxy, water shapes everything. Water Omnis exists to make this knowledge accessible to everyone.