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Rhine-Meuse Delta is the low-lying river system in the Netherlands where the Rhine and Meuse converge and continue toward the North Sea. The rivers divide into channels and estuaries, including routes through the Haringvliet sluices and the Nieuwe Waterweg. Dikes, sluices, storm-surge barriers, and...

The Camargue is a significant wetland delta located in southern France within the Rhône River’s estuary. It's recognized as a Ramsar site due to its valuable ecological features including extensive saltmarshes and diverse birdlife, particularly pink flamingo populations. The area supports unique hor...

The Aerospatiale-BAC Concorde was a turbojet-powered supersonic passenger airliner developed jointly by France and the United Kingdom. It is distinguished by its ogival delta wing design and droop nose, enabling it to cruise at speeds up to Mach 2. Entering commercial service in 1976, the aircraft w...

The Amazon River Delta is a vast estuarine system in northeastern Brazil where the Amazon River meets the Atlantic Ocean. It features an extensive network of waterways, islands, and mangrove forests that span hundreds of kilometers. Because the river discharges roughly 20% of the world's freshwater...

The Mississippi River Delta is a highly engineered, bird-foot shaped landform in southern Louisiana formed by sediment deposited by the Mississippi River. It encompasses approximately 3 million acres of coastal wetlands, marshes, and barrier islands. The region plays a critical role in the United St...

The Danube Delta is a vast wetland region located mostly in Romania, with a smaller portion in Ukraine, where the Danube River flows into the Black Sea. Covering roughly 5,800 square kilometers, it is the second-largest river delta in Europe and a designated UNESCO World Heritage Site. The landscape...

The Rhine-Meuse-Scheldt Delta is a heavily engineered river delta in the Netherlands where three major European rivers converge and empty into the North Sea. Following the devastating North Sea flood of 1953, the Dutch government implemented the Delta Works, a massive network of dams, sluices, and s...

The Pearl River Delta is a densely populated megaregion in southern China's Guangdong Province where the Pearl River flows into the South China Sea. It encompasses several major cities, including Guangzhou, Shenzhen, Macau, and Hong Kong. Since the economic reforms of the late 20th century, the area...

The Ganges-Brahmaputra Delta is a massive river delta located in the Bengal region, spanning most of Bangladesh and parts of eastern India. Covering approximately 105,000 square kilometers, it is the largest river delta in the world. The delta features the Sundarbans, an immense mangrove forest ecos...

The Sundarbans, shared by Bangladesh and India, is the world's largest mangrove forest at roughly 10,000 sq km and a UNESCO World Heritage Site listed in 1987, sheltering the largest remaining population of Bengal tigers.

Lena River Delta is a broad Arctic wetland in northern Russia where the Lena River enters the Laptev Sea. The river, which runs for roughly 4,400 kilometers, has built a delta of branching channels, islands, tundra, and permafrost. Much of the area is protected within the Lena Delta Wildlife Reserve...

The Yangtze River Delta is a major river delta in eastern China where the Yangtze River meets the East China Sea. It forms a vast economic region encompassing Shanghai and the provinces of Jiangsu, Zhejiang, and Anhui. Home to over 200 million people, it is one of the most densely populated and heav...

The Tigris-Euphrates Delta is a vast inland delta system located in southern Iraq where the Tigris and Euphrates rivers historically converged before reaching the Persian Gulf. Often referred to as the Mesopotamian Marshes, this wetland ecosystem is situated in a region recognized as the cradle of a...

The Marismas del Guadalquivir is a significant wetland ecosystem located along the Guadalquivir River delta in Andalusia, Spain. It’s notable as the heart of Doñana National Park and a vital habitat for diverse bird species, particularly during their annual migrations. This area provides essential f...

The Atchafalaya Basin Marshes are a vast expanse of river swamps and wetlands located in southern Louisiana, forming the largest river swamp in the United States. Fed by the Atchafalaya River, a distributary of the Mississippi, the basin functions as a critical floodway designed to manage water leve...

The Delta II was an expendable medium-lift launch vehicle originally manufactured by McDonnell Douglas and later operated by Boeing and United Launch Alliance. Flying from 1989 until its final mission in 2018, the rocket achieved a highly reliable track record with over 150 successful launches. It w...

The Guadalquivir Delta is an alluvial plain in Andalusia, southern Spain, formed where the Guadalquivir River flows into the Gulf of Cádiz. Much of the delta is occupied by Doñana National Park, a protected area established in 1969. The park features a diverse mosaic of marshlands, shallow streams,...

The Lena Delta is an extensive wetland region in Siberia, Russia, where the Lena River empties into the Laptev Sea. Covering approximately 32,000 square kilometers, it is the largest river delta in the Arctic. The area is characterized by thousands of islands, channels, and polygonal tundra. Most of...

The Mamberamo River Delta is a broad wetland system in northern Papua, Indonesia, where the Mamberamo River discharges into the Bismarck Sea and the Pacific Ocean. The coastal lowlands contain marshes and a wide delta, while the wider watershed includes tropical forest and large marshland areas in n...

The Irrawaddy, also called the Ayeyarwady, is Myanmar’s principal river and one of the country’s main geographic and economic corridors. It is formed by the confluence of the Nmai and Mali rivers in northern Myanmar, flows south through the country, and divides into a broad delta before reaching the...

Kuskokwim River Delta is a flat wetland region in southwestern Alaska where the Kuskokwim River reaches Kuskokwim Bay and the Bering Sea. Its landscape includes marshes, tundra, lakes, ponds, and many river channels, with seasonal flooding shaping transport and wildlife habitat. The delta is the anc...

The Atrato River Delta is an estuarine wetland in Colombia where the Atrato River divides into multiple mouths before reaching the Gulf of Urabá on the Caribbean coast. It lies in the Chocó region and contains channels and estuarine habitats that support fish and other aquatic life. The delta also s...

The Orinoco Delta is a vast, heavily forested wetland in northeastern Venezuela where the Orinoco River empties into the Atlantic Ocean. Spanning roughly 25,000 square kilometers, the delta consists of a complex network of channels, swamps, and mangrove forests. The region's tropical climate and ter...

The Yukon-Kuskokwim Delta is a massive river delta situated along the coast of western Alaska. Covering approximately 130,000 square kilometers, it is one of the largest river deltas in North America. The landscape is dominated by extensive wetlands, tundra, and numerous lakes that freeze over durin...

The Rufiji River Delta is a large river and tidal wetland on the coast of southeastern Tanzania, where the Rufiji River divides into distributaries before reaching the Indian Ocean. Its low-lying islands, mudflats, tidal channels, and mangrove forests provide habitat for fish, crustaceans, birds, an...

The Paraná Delta is an extensive alluvial wetland in northeastern Argentina, formed by sediment carried by the Paraná River as it approaches and enters the Río de la Plata. It is made up of thousands of low islands separated by channels, creeks, and lagoons, with habitats that include wetlands, gall...

The Parnaíba River Delta is a network of channels, islands, lagoons, dunes, and mangrove areas on Brazil's northeastern Atlantic coast, where the Parnaíba River reaches the sea. It lies mainly between the states of Piauí and Maranhão and supports coastal and freshwater habitats shaped by tides, rive...

The Mikoyan-Gurevich MiG-21 is a supersonic interceptor and fighter aircraft developed by the Soviet Union in the 1950s. Entering service in 1959, it is distinguished by its tailed delta wing design and was produced in greater numbers than any other supersonic jet, with over 11,000 units built. The...

The Volga Delta is the largest river delta in Europe, situated in southern Russia where the Volga River flows into the Caspian Sea. It features an intricate network of roughly 500 smaller channels, streams, and shallow lakes. The delta is recognized as a highly productive ecosystem, supporting exten...