Hydrology Collection

Desert alluvial fan, satellite image. North is at top. Desert areas can sometimes go for years without rain, and then intense storms will cause flooding that fills old dry river beds

Woodland river. This is the East Lyn river, which flows through Exmoor National Park. Photographed near Rockford, Somerset, UK

The Great Lakes, ISS image C016 / 3870
The Great Lakes. View from the International Space Station (ISS) of the Great Lakes of the USA and Canada. North is towards upper right. Here, the ISS is over a point to the southeast of Nova Scotia

Bridal Veil Falls in the fall, Uinta National Forest, Utah, United States of America, North America

Measuring water levels
Water level recorder in a river, being adjusted by a scientist. It uses float activation of a gearing assembly to move a pen across a chart drum. The chart drum is driven by a spring-wound clock

NASAs Global Precipitation Measurement Mission, 2014. Creator: NASA
NASAs Global Precipitation Measurement Mission, 2014. Severe thunderstorms over South Carolina, USA, as observed from NASAs ER-2 aircraft flying at 65

Waterfall at the source of the Yenisei (chromolitho)
2782748 Waterfall at the source of the Yenisei (chromolitho) by European School, (19th century); Private Collection; (add.info.: Waterfall at the source of the Yenisei)

Source of the Yangtze in Tibet (chromolitho)
2782745 Source of the Yangtze in Tibet (chromolitho) by European School, (19th century); Private Collection; (add.info.: Source of the Yangtze in Tibet)

Waterfall on the Mississippi (chromolitho)
2782744 Waterfall on the Mississippi (chromolitho) by European School, (19th century); Private Collection; (add.info.: Waterfall on the Mississippi)

Lake from which the Amazon flows (chromolitho)
2782747 Lake from which the Amazon flows (chromolitho) by European School, (19th century); Private Collection; (add.info.: Lake from which the Amazon flows)

James Rennell (engraving)
815725 James Rennell (engraving) by English School, (19th century); Private Collection; (add.info.: Major James Rennell (1742-1830). English geographer, historian and a pioneer of oceanography

Source of the Rhone (chromolitho)
2782746 Source of the Rhone (chromolitho) by European School, (19th century); Private Collection; (add.info.: Source of the Rhone. Liebig card, published in late 19th or early 20th century)

La geographie physique - physical geography (engraving)
5997568 La geographie physique - physical geography (engraving) by English School, (19th century); Private Collection; (add.info.: La geographie physique - physical geography)

The Nile as it exits Lake Victoria (chromolitho)
2782743 The Nile as it exits Lake Victoria (chromolitho) by European School, (19th century); Private Collection; (add.info.: The Nile as it exits Lake Victoria)

Various representations of hydrodynamics, Wurtemberg, c1850. 2) Fountain: 3) Persian wheel or Noria: 4) Archimedes Screw: 5) Chain pump: 6&7) Suction and force pumps: 8) Fire engine: 10, 11

Remains of a Nilometer, an ancient device for measuring the annual inundation of the Nile, c1885. The annual flooding of the Nile was always vitally important to Egypt as it governed the fertility of

Circulation of water between sea and mountains, 1665. Blue-tinted flows are from mountains to the sea, while black represents flows taking water from whirlpools in the sea back to the mountains via

Nilometer on the island of Roda, Cairo, Egypt, c1895. The annual flooding of the Nile was historically vitally important to Egypt because it governed the fertility of the soil

Nilometer in Egypt, 17th-century artwork C016 / 8926
Nilometer in Egypt. 17th-century artwork titled Nilometrium, showing a nilometer as used in Ancient Egypt. The central column is labelled in cubits to show the height of the water during the annual

Ice formations C013 / 6070
Ice formations. Ice stalagmites and icicles forming on a rocky surface. Photographed in winter near the banks of the river Rhine, at Eglisau, Switzerland

Peru, Amazon, Amazon River. Bends in the Nanay River, a Tributary of the Amazon River

Peru, Loreto Province. Boats on the Amazon River near the town of Islandia

Cross-section model of the Atlantic Ocean

San Juan River, USA C018 / 1812
San Juan River. Panoramic view of the San Juan River meandering through Gooseneck State Park, Utah, USA

Awash River waterfalls, Ethiopia C017 / 7611
Awash River waterfalls in early morning light. The Awash River is a major river in Ethiopia, forming part of a closed drainage basin

Langebaan Lagoon, South Africa C017 / 1925
Langebaan Lagoon. Aerial view over the Langebaan Lagoon and salt marshes of the West Coast National Park, Western Cape, South Africa. The shoreline is at left

Langebaan Lagoon, South Africa C017 / 1924
Langebaan Lagoon. Aerial view over the Langebaan Lagoon and salt marshes of the West Coast National Park, Western Cape, South Africa

Sea surface salinity, Aquarius image C017 / 6816
Sea surface salinity, Aquarius image. Computer model showing the salinity (dissolved salt-content) of the Atlantic Ocean, based on information recorded by the Aquarius spacecraft from December 2011

Iguazu Falls, Argentina F008 / 4424
Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls and are divided by islands into 274 separate waterfalls

Iguazu Falls, Argentina F008 / 4412
Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls and are divided by islands into 274 separate waterfalls

Tropical forest near Iguazu Falls. F008 / 4418
Aerial view of the tropical forest near Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water

Devils Throat, Iguazu Falls, Argentina F008 / 4425
Devils Throat, Iguazu Falls. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls and are divided by islands into 274 separate waterfalls

Iguazu Falls, Argentina F008 / 4415
Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls and are divided by islands into 274 separate waterfalls

Iguazu Falls, Argentina F008 / 4413
Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls and are divided by islands into 274 separate waterfalls

Iguazu Falls, Argentina F008 / 4419
Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls and are divided by islands into 274 separate waterfalls

Iguazu Falls, Argentina F008 / 4417
Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls and are divided by islands into 274 separate waterfalls

Iguazu Falls, aerial view, Argentina F008 / 4423
Aerial view of the Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls

Iguazu Falls, aerial view, Argentina F008 / 4421
Aerial view of the Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls

Great egret at Iguazu Falls, Argentina F008 / 4416
Great egret (Ardea alba). This large wading bird uses it long beak to spear fish at Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water

Iguazu Falls, Argentina F008 / 4414
Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls and are divided by islands into 274 separate waterfalls

Iguazu Falls, Argentina F008 / 4420
Iguazu falls, Argentina. Iguazu Falls, named after the Guarani word for great water, are four times the width of Niagara Falls and are divided by islands into 274 separate waterfalls

Iguazu River, directly above Iguazu Falls F008 / 4422
Aerial view of the Iguazu River, directly above the Iguazu Falls. The River is located in southern Brazil and northeastern Argentina

Water shortage, conceptual artwork C014 / 1257
Water shortage. Conceptual artwork of water dripping in an hourglass onto a seedling in cracked mud, representing a water shortage or drought

Nilometer on Elephantine Island, Egypt C014 / 0521
Nilometer on Elephantine Island, Egypt. Two graduated measuring markers are seen, one below the feet of the woman at centre left, and one in the niche at centre right

Sea surface salinity, Aquarius image C017 / 6820
Sea surface salinity, Aquarius image. Computer model showing the salinity (dissolved salt-content) of the oceans around Africa

Columbia Glacier, Alaska, 1989
Columbia Glacier, Alaska. False-colour satellite image of the Columbia Glacier, Alaska, USA, taken in 1989. Columbia Glacier descends from an ice field (top) 3, 050 metres above sea level

Water cycle, artwork C017 / 7380
Water cycle, artwork. The natural water cycle (or hydrologic cycle) describes the continuous movement (arrows) of water on, above and below the surface of the Earth

Water cycle, artwork C017 / 7382
Water cycle, artwork. The natural water cycle (or hydrologic cycle) describes the continuous movement (arrows) of water on, above and below the surface of the Earth

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Hydrology, the study of water and its movement through various landscapes, unveils nature's intricate tapestry. From the vast expanse of a desert alluvial fan to the serene beauty of a woodland river, hydrology encompasses it all. Satellite images capture the grandeur of hydrological wonders like The Great Lakes seen from space aboard the International Space Station. A mesmerizing sight that showcases their sheer size and importance in North America's water cycle. In Uinta National Forest, Utah, Bridal Veil Falls cascades gracefully during autumn. Its golden hues blend with the vibrant foliage, creating a breathtaking spectacle that exemplifies hydrology's harmony with seasonal changes. Measuring water levels becomes vital in understanding our planet's delicate balance. Scientists diligently work on this task using advanced techniques such as those employed by NASA's Global Precipitation Measurement Mission. Their efforts enable us to comprehend precipitation patterns crucial for sustainable resource management. Chromolithographs transport us to distant lands where hydrological marvels shape landscapes and cultures alike. The Yenisei River reveals its power at its source through an awe-inspiring waterfall while Tibet holds secrets within as it births the mighty Yangtze River amidst stunning surroundings. The Mississippi River boasts its own majestic waterfall, captivating hearts with its raw energy and splendorous display. Meanwhile, a chromolithograph depicts a tranquil lake from which the Amazon flows—a reminder of how interconnected Earth's water systems truly are. James Rennell immortalized his passion for hydrology through engravings that depict rivers' origins across continents. These works remind us that every drop has traveled far before reaching our eyes—a testament to both nature's resilience and humanity's reliance on these life-giving waters. As we delve into hydrology’s depths, we unravel mysteries hidden beneath Earth’s surface—like discovering the source of Rhone River depicted in yet another enchanting chromolithograph—an invitation to explore the intricate web of waterways that shape our world.