An Achuar man spear fishing on a tributary of the Amazon, Ecuador, South America

An Achuar man spear fishing on a tributary of the Amazon, Ecuador, South America

Aerial view of Amazon rainforest and tributary of the Rio Negro, Manaus, Amazonas, Brazil, South America

Aerial view of Amazon rainforest and tributary of the Rio Negro, Manaus, Amazonas, Brazil, South America

Aerial view of Amazon rainforest and tributary of the Rio Negro, Manaus, Amazonas, Brazil, South America

Water buffalo drinking from the Yamuna River, a tributary of the Ganges River, while people wash their clothes, Delhi, India, Asia

Women wash clothes in the polluted water of the Yamuna River, a tributary of the Ganges, New Delhi, India, Asia

Colorful clothes drying in the sun on the banks of the River Yamuna, a polluted tributary of the Ganges, New Delhi, India, Asia

Dropping down from Penzi La, looking at the glacial moraine that feeds into the Stod River, one of the tributaries of the Zanskar River, Ladakh, India, Himalayas, Asia

Procession of the tributaries, Persepolis, UNESCO World Heritage Site, Fars Province, Iran, Middle East

Procession of the tributaries, Persepolis, UNESCO World Heritage Site, Fars Province, Iran, Middle East

Boat on the Kinh Ben Nghe, a tributary of the Saigon River, Ho Chi Minh City, formerly Saigon, Vietnam, Asia

Boat on the Kinh Ben Nghe, a tributary of the Saigon River, in downtown Ho Chi Minh City (formerly Saigon), Vietnam, Indochina, Southeast Asia, Asia

Crayfish fisherman on a tributary of the Phipot River in the Cardamom mountains, Koh Kong, Cambodia, Indochina, Southeast Asia, Asia

Dropping down from Penzi La, looking at the glacial moraine that feeds into the Stod River, one of the tributaries of the Zanskar River, Ladakh, India, Himalayas, Asia

An Achuar man spear fishing on a tributary of the Amazon, Ecuador, South America

Kinh Ben Nghe, a tributary of the Saigon River, Ho Chi Minh City, formerly Saigon, Vietnam, Asia

The Sunwapta River which is a tributary of the Athabasca River in jasper National Park, Alberta, Canada, North America

The Sunwapta River which is a tributary of the Athabasca River in jasper National Park, Alberta, Canada, North America

Aerial view of Amazon rainforest and tributary of Rio Negro, Manaus, Amazonas, Brazil, South America

Luangwa River, South Luangwa National Park, Zambia, Africa

People at waterfall connecting a tributary with the Rio Parana (Parana River), near Puerto Iguazu, Misiones Province, Argentina, South America

Adult common squirrel monkey (Saimiri sciureus), Pahuachiro tributary, Amazon Basin, Loreto, Peru, South America

Sailing the tributaries of the Mekong River to get to a village to see how coconut candy is made, Vietnam, Indochina, Southeast Asia, Asia

Sailing through the tributaries of the Mekong River, Vietnam, Indochina, Southeast Asia, Asia

Morning fog on the Amana River, an Amazon tributary, Amazonas state, Brazil

Kasai River flowing through Tshikapa, Kasai, Democratic Republic of Congo, Africa

Kannaviou Reservoir, Cyprus, Eastern Mediterranean Sea, Europe

Portneuf River, a tributary of the Saint-Lawrence River, Cote-Nord region, Quebec province, Canada, North America

Morning fog on the Amana River, an Amazon tributary, Amazonas state, Brazil, South America

Sailing the tributaries of the Mekong River to reach a village to see how they make coconut candy, Vietnam, Indochina, Southeast Asia, Asia

Sailing on the tributaries of the Mekong River, Vietnam, Indochina, Southeast Asia, Asia

Victorian warehouses on river tributary in Kings Lynn, Norfolk, England, United Kingdom, Europe

Sailing the tributaries of the Mekong River, Vietnam, Indochina, Southeast Asia, Asia

Ritual cleansing in Seti Khola, a tributary of the Ganges, for Nepali New Year, Pokhara, Nepa, Asia

Luvuvhu river, tributary of Limpopo river, northern tip of Kruger National Park, South Africa, Africa

Buoy frozen into ice on the Bol'Shaya Nevka River, a tributary of the Neva, near the Svobody Bridge, St. Petersburg, Russia, Europe

Aerial view of saltmarsh at low tide near Cadiz, Spain

Aerial view of saltmarsh at low tide near Cadiz, Spain

Lakeside houses built on stilts, Inle Lake, Shan State, Myanmar, (Burma)

Lakeside houses built on stilts, Inle Lake, Shan State, Myanmar, (Burma)

Okavango River, Namibia and Angola, satellite image

Betsiboka River, Madagascar

Tributary Waterfall Snake River ID

aerial photo of ship's hoist, elevator, Scharnebeck, canal tributary of the river Elbe, Lower Saxony, Germany

Europe, Germany, Rhineland-Palatinate, Cochem, Reichsburg Cochem in the valley of the Moselle river

Europe, Germany, Rhineland-Palatinate, Cochem, Reichsburg Cochem in the valley of the Moselle river

Europe, Germany, Rhineland-Palatinate, Cochem, Reichsburg Cochem in the valley of the Moselle river

Aerial view, Seseke, tributary of the lip, SesekeKunst, Line of Beauty - the fifth treatment plant, Susanne Lorenz, cycle lane, Klaerwerk 4 four sewage treatment plant Kamen, Luenen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

Aerial view, Seseke, tributary of the lip, SesekeKunst, landscape in the river, Thomas Stricker, river bed, artificial island, Luenen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

Aerial view, Seseke, tributary of the lip, SesekeKunst, Line of Beauty - the fifth treatment plant, Susanne Lorenz, cycle lane, Klaerwerk 4 four sewage treatment plant Kamen, Luenen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

Aerial view of rainforest and tributary to Kaieteur Waterfalls, Guyana, South America

Isar, tributary of the Sylvensteinsee, aerial view, Lenggries, Isarwinkel, Upper Bavaria, Bavaria, Germany, Europe

Super jeeps driving through a tributary of the Krossa River, fiorsmoerk, Iceland, Europe

Trees reflected in a tributary of the Amazon, Mamiraua Nature Reserve, Amazon, Brazil, South America

Super jeep driving through a tributary of the Krossa River, fiorsmoerk, Iceland, Europe

Tributary of the Spree river with small houses, Lübbenau, Spreewald, Brandenburg, Germany, Europe

Aerial view, Seseke, tributary of the lip, SesekeKunst, landscape in the river, Thomas Stricker, river bed, artificial island, Luenen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

Rugged mountain landscape near Tiniteqilaaq, tributary of the Sermilik Fjord, East Greenland, Greenland

Rugged mountain landscape near Tiniteqilaaq, tributary of the Sermilik Fjord, East Greenland, Greenland

Rugged mountain landscape near Tiniteqilaaq, tributary of the Sermilik Fjord, East Greenland, Greenland

Rugged mountain landscape near Tiniteqilaaq, tributary of the Sermilik Fjord, East Greenland, Greenland

Rugged mountain landscape near Tiniteqilaaq, tributary of the Sermilik Fjord, East Greenland, Greenland

Reservoir Lake Sylvenstein near Bad Toelz in the Karwendel mountains. The river Isar is the main tributary. Germany, Bavaria, Upper Bavaria

Reservoir Lake Sylvenstein near Bad Toelz in the Karwendel mountains. The river Isar is the main tributary. Germany, Bavaria, Upper Bavaria

Amy Peterson wading through pool in Deer Creek which is a tributary of the Colorado river, Grand Canyon, Arizona.

November 7, 2008 Mt Shasta CA A spawned-out Chinook salmon watches over her redd in the Shasta River where it runs through Big Springs Ranch about 2 miles north of the town of Mt Shasta. The ranch, which is contributing to degraded habitat conditions, which actually warm water tempt by upwards of 10 degrees as the river passes through the ranch and then spills into the Klameth, is currently under contract for purchase by TNC, therefor TNC and partner organizations have been allowed to research this stretch of river for the first time. They have discovered that is it a very fertile juvenile rearing area and that there are a surprising number of returning salmon in spite of habitat degraded by grazing cattle (often in the river) and irrigation practices. If this purchase is successful, TNC has the chance to improve a large stretch of habitat and quickly improve conditions that will effect numbers of returning fish and habitat in the Shasta and Klameth Rivers. In California, The Nature Conservancy is focusing its efforts on protecting the Shasta River and its tributaries, which create one of the most important spawning nurseries for Chinook salmon in the entire Klamath Basin, United States of America

Mt Shasta CA, Big Spring Ranch Bill Chesney from the CA Dept of Fish & Game counting redds in a stretch of river that is heavily grazed by cattle who have full access to the river and often drink and eat in it. Mt Shasta in the background. The Shasta River runs through Big Springs Ranch about 20 miles north of the town of Mt Shasta. The ranch, which is contributing to degraded habitat conditions, and actually warming water temps by upwards of 10 degrees as the river passes through the ranch and then spills into the Klameth, is currently under contract for purchase by TNC. Since the contract began, TNC and partner organizations have been allowed to research this stretch of river for the first time. They have discovered that is it a very fertile juvenile rearing area and that there are a surprising number of returning salmon in spite of habitat degradation by grazing cattle (often in the river) and irrigation practices. If this purchase is successful, TNC has the chance to improve a large stretch of habitat and quickly improve conditions that will effect numbers of returning fish and habitat in the Shasta and Klameth Rivers. The Shasta River and its tributaries create one of the most important spawning nurseries for Chinook salmon in the entire Klamath Basin, United States of America

November 12, 2008 Mt Shasta CA, Big Springs ranch Carson Jeffres (rt) Staff Research Associate for UC Davis Center for watershed Sciences, and Andrew Nichols, Jr Specialist (UC Davis Center for watershed Sciences,) conducting research in the Shasta River where it runs through Big Springs Ranch about 20 miles north of the town of Mt Shasta. The ranch, which is contributing to degraded habitat conditions that warm water temps by upwards of 10 degrees as the river passes through the ranch and then spills into the Klameth, is currently under contract for purchase by TNC, therefor TNC and partner organizations have been allowed to research this stretch of river for the first time. They have discovered that is it a very fertile juvenile rearing area and that there are a surprising number of returning salmon in spite of habitat degrated by grazing cattle (often in the river) and irrigation practices. If this purchase is sucessful, TNC has the chance to improve a large stretch of habitiat and qucikly improve conditions that will effect numbers of returning fish and habitiat in the Shasta and Klameth Rivers. The Shasta River and its tributaries create one of the most important spawning nurseries for Chinook salmon in the entire Klamath Basin, United States of America

November 12, 2008 Mt Shasta and the Shasta River, Big Springs ranch, CA Carson Jeffres Staff Research Associate for UC Davis Center for watershed Sciences, conducting research in the Shasta River where it runs through Big Springs Ranch about 20 miles north of the town of Mt Shasta. The Shasta River and its tributaries create one of the most important spawning nurseries for Chinook salmon in the entire Klamath Basin. The ranch is contributing to degraded habitat conditions, which actually warm water temps by upwards of 10 degrees as the river passes through the ranch and then spills into the Klameth River.This stretch of river is a very fertile juvenile salmon rearing area and that there are a surprising number of returning salmon in spite of habitat degraded by grazing cattle and bad irrigation practices, United States of America

November 7, 2008 Mt Shasta CA A spawned-out Chinook salmon watches over her redd in the Shasta River where it runs through Big Springs Ranch about 2 miles north of the town of Mt Shasta. The ranch, which is contributing to degraded habitat conditions, which actually warm water tempt by upwards of 10 degrees as the river passes through the ranch and then spills into the Klameth, is currently under contract for purchase by TNC, therefor TNC and partner organizations have been allowed to research this stretch of river for the first time. They have discovered that is it a very fertile juvenile rearing area and that there are a surprising number of returning salmon in spite of habitat degraded by grazing cattle (often in the river) and irrigation practices. If this purchase is successful, TNC has the chance to improve a large stretch of habitat and quickly improve conditions that will effect numbers of returning fish and habitat in the Shasta and Klameth Rivers. In California, The Nature Conservancy is focusing its efforts on protecting the Shasta River and its tributaries, which create one of the most important spawning nurseries for Chinook salmon in the entire Klamath Basin, United States of America

November 12, 2008 Mt Shasta CA, Big Springs ranch The Shasta River as it runs through Big Springs Ranch about 20 miles north of the town of Mt Shasta. The Shasta River and its tributaries create one of the most important spawning nurseries for Chinook salmon in the entire Klamath Basin. The ranch is contributing to degraded habitat conditions, which actually warm water temps by upwards of 10 degrees as the river passes through the ranch and then spills into the Klameth River.This stretch of river is a very fertile juvenile salmon rearing area and that there are a surprising number of returning salmon in spite of habitat degraded by grazing cattle and bad irrigation practices, United States of America

Dave and Angelina (jumping in) Wolf in Elves Chasm which is a tributary canyon area to the Colorado river which rafters hike up during river trips, Grand Canyon, Arizona.

Tiger Leaping Gorge, The Deepest River Canyon, Yunnon Province, China

Two women packrafters negotiating a tributary of the Charley River in summertime, Yukon–Charley Rivers National Preserve, Alaska, United States of America

Female packrafter negotiating a technical rapid on the tributary of the Charley River with aufeis in summer, Alaska, United States of America

Two women packrafters negotiating a tributary of the Charley River in summertime, Yukon–Charley Rivers National Preserve, Alaska, United States of America

Female packrafter relaxing on a mellow stretch of the Charley River, Yukon–Charley Rivers National Preserve, Alaska, United States of America

Two women packrafters getting ready to launch on the Charley River in summertime, Yukon–Charley Rivers National Preserve, Alaska, United States of America

Two women packrafters negotiating a tributary of the Charley River in summertime, Yukon–Charley Rivers National Preserve, Alaska, United States of America

Countryside And River, Chilliwack, British Columbia, Canada

Woman photographing from her Packrafting on the Charley River in summertime, Yukon–Charley Rivers National Preserve, Alaska, United States of America

Two women packrafters negotiating a tributary of the Charley River in summertime, Yukon–Charley Rivers National Preserve, Alaska, United States of America

Two women packrafting down the Charley River watching and photographing the cliff swallows taking flight in summertime, Yukon–Charley Rivers National Preserve, Alaska, United States of America

Female packrafters negotiating a tributary of the Charley River with aufeis in summer, Alaska, United States of America

Former spa by Puente del Inca, a natural arch that forms a bridge with sulphur deposits over the Vacas River, a tributary of the Mendoza River, Mendoza, Argentina

Bangladesh, Dhaka Division, Keraniganj Upazila, Overcrowded boat travelling down a tributary river.,

Amazon River Basin Cuyabeno River (Amazon tributary) young girl with brother in rural home, Oriente, Ecuador

Amazon River Basin Napo River (Amazon tributary) down river from Coca at La Selva Jungle Lodge toucan in rainforest, Oriente, Ecuador

Amazon River Basin Napo River (Amazon tributary) down river at La Selva Jungle Lodge naturalists on path through primary rainforest, Oriente, Ecuador

Amazon River Basin Napo River (Amazon tributary) down river at La Selva Jungle Lodge naturalists on path through primary rainforest, Oriente, Ecuador

Amazon River Basin Napo River (Amazon tributary) down river at La Selva Jungle Lodge naturalists crossing jungle stream in rainforest, Oriente, Ecuador

Amazon River Basin Napo River (Amazon tributary) down river from Coca at La Selva Jungle Lodge path through primary rainforest, Oriente, Ecuador

Amazon River Basin Napo River (Amazon tributary) down river from Coca indian in dugout canoe in primary, uncut jungle rainforest, Oriente, Ecuador

Amazon Basin, Napo River (tributary) La Selva Jungle Lodge, naturalists in dugout canoe on jungle stream in primary rainforest, Amazon, Ecuador

Amazon Basin, Napo River (tributary) La Selva Jungle Lodge, naturalists in dugout canoe on jungle stream in primary rainforest, Amazon, Ecuador

Amazon Basin, Napo River (tributary) La Selva Jungle Lodge, naturalists in dugout canoe on the Napo passing through rainforest, Amazon, Ecuador

Amazon Basin, Napo River (tributary) La Selva Jungle Lodge individual cabanas surrounded by rainforest, Amazon, Ecuador

Amazon Basin, Napo River (tributary) La Selva Jungle Lodge, visitors traveling to lodge by motorized dugout canoe, Amazon, Ecuador

Amazon Basin, Napo River (tributary) La Selva Jungle Lodge, visitors traveling to lodge by motorized dugout canoe, Amazon, Ecuador