The Nile is a major north-flowing river in northeastern Africa. It flows into the Mediterranean Sea. The longest river in Africa, it has historically been considered the longest river in the world, though this has been contested by research suggesting that the Amazon River is slightly longer. The Nile is amongst the smallest of the major world rivers by measure of cubic metres flowing annually. About 6,650 km (4,130 mi) long, its drainage basin covers eleven countries: Tanzania, Uganda, Rwanda, Burundi, the Democratic Republic of the Congo, Kenya, Ethiopia, Eritrea, South Sudan, Republic of the Sudan, and Egypt. In particular, the Nile is the primary water source of Egypt, Sudan and South Sudan. Additionally, the Nile is an important economic river, supporting agriculture and fishing.
The Rhine is one of the major European rivers. The river begins in the Swiss canton of Graubünden in the southeastern Swiss Alps, forms part of the Swiss-Liechtenstein, Swiss-Austrian, Swiss-German and then the Franco-German border, then flows in a mostly northerly direction through the German Rhineland and the Netherlands and eventually empties into the North Sea.
The Drava or Drave is a river in southern Central Europe. With a length of 710 kilometres (440 mi), 724 kilometres (450 mi) including the Sextner Bach source, it is the fifth or sixth longest tributary of the Danube, after the Tisza, Sava, Prut, Mureș and perhaps Siret. The Drava drains an area of about 40,154 km2 (15,504 sq mi). Its mean annual discharge is seasonally 500 m3/s (18,000 cu ft/s) to 670 m3/s (24,000 cu ft/s). Its source is near the market town of Innichen, in the Puster Valley of South Tyrol, Italy. The river flows eastwards through East Tirol and Carinthia in Austria into the Styria region of Slovenia. It then turns southeast, passing through Croatia and, after merging with its main tributary Mur, forms most of the border between Croatia and Hungary, before it joins the Danube near Osijek.
The Colorado River is an approximately 862-mile (1,387 km) long river in the U.S. state of Texas. It is the 18th longest river in the United States and the longest river with both its source and its mouth within Texas.
The White Nile is a river in Africa, one of the two main tributaries of the Nile, the other being the Blue Nile. The name comes from colouring due to clay carried in the water.
The River Gowy is a river in Cheshire, England, a tributary of the River Mersey.
The River Clun runs mostly through Shropshire, England and joins the River Teme at Leintwardine, Herefordshire. The Clun Valley is part of the Shropshire Hills AONB.
The Ourthe is a 165-kilometre (103 mi) long river in the Ardennes in Wallonia (Belgium). It is a right tributary to the river Meuse. The Ourthe is formed at the confluence of the Ourthe Occidentale and the Ourthe Orientale, west of Houffalize.
The Sutlej or Satluj River is the longest of the five rivers that flow through the historic crossroads region of Punjab in northern India and Pakistan. The Sutlej River is also known as Satadru. It is the easternmost tributary of the Indus River. The Bhakra Dam is built around the river Sutlej to provide irrigation and other facilities to the states of Punjab, Rajasthan and Haryana.
Penna is a river of southern India. This is a unique river in world where after originating from Nandi hills, it flows as two different streams, one in North and South directions. The Penna rises in the Nandi Hills in Chikkaballapur District of Karnataka state, and runs north and east in Karnataka, south towards Tamilnadu with the Tamil name Then Pennai and east through the states of Karnataka and Andhra Pradesh, known as Uttara Pinakini, to empty into the Bay of Bengal. It is 597 kilometres (371 mi) long, with a drainage basin covering 55,213 km2: 6,937 km2 in Karnataka and 48,276 km2 in Andhra Pradesh. The river basin lies in the rain shadow region of Eastern Ghats and receives 500 mm average rainfall annually.
The Kocher is a 169 km (105 mi)-long right tributary of the Neckar in the north-eastern part of Baden-Württemberg, Germany. The name "Kocher" originates from its Celtic name "cochan" and probably means winding, meandering river. Its total drainage area is 1,960 km2 (760 sq mi). The Kocher rises in the eastern foothills of the Swabian Alb from two karst springs, the Schwarzer (black) Kocher and the Weißer (white) Kocher, that join in Unterkochen near Aalen. The Schwarzer Kocher is approximately 8 km (5.0 mi) long. Its source discharge varies between 50 L/s and 4,000 L/s with an average of 680 L/s. The 3.3 km (2.1 mi) long Weißer Kocher has an average discharge of 400 L/s.
In geography, a confluence occurs where two or more flowing bodies of water join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river ; or where two streams meet to become the source of a river of a new name ; or where two separated channels of a river rejoin at the downstream end.
Airola is a comune (municipality) in the Province of Benevento in the Italian region Campania, located about 35 km northeast of Naples and about 20 km southwest of Benevento in the Valle Caudina, facing the Monte Taburno. Nearby is the confluence of the Tesa and Faenza streams into the Isclero River. Airola's territory is also crossed by the Acquedotto Carolino, carrying waters to the Caserta Palace.
Moiano is a comune (municipality) in the Province of Benevento in the Italian region Campania, located about 40 kilometres (25 mi) northeast of Naples and about 20 kilometres (12 mi) southwest of Benevento on the western slope of the Monte Taburno, on the river Isclero.
The Zanskar River is the first major tributary of the Indus River, equal or greater in volume than the main river, which flows entirely with Ladakh, India. It originates northeast of the Great Himalayan range and drains both the Himalayas and the Zanskar Range within the region of Zanskar. It flows northeast to join the Indus River near Nimo.
The River Chelmer is a river that flows entirely through the county of Essex, England, running 65 kilometres (40 mi) from the north west of the county through Chelmsford to the River Blackwater near Maldon.
A perennial stream is a stream that has continuous flow of surface water throughout the year in at least parts of its catchment during seasons of normal rainfall, as opposed to one whose flow is intermittent. In the absence of irregular, prolonged or extreme drought, a perennial stream is a watercourse, or segment, element or emerging body of water which continually delivers groundwater. For example, an artificial disruption of stream, variability in flow or stream selection associated with the activity in hydropower installations, do not affect this status. Perennial streams do not include stagnant water, reservoirs, cutoff lakes and ponds that persist throughout the year. All other streams, or parts of them, should be considered seasonal rivers or lakes. The stream can cycle from intermittent to perpetual through multiple iterations.
The Manjara, also spelled Manjara or Manjeera, is a tributary of the river Godavari. It passes through the states of Maharashtra, Karnataka and Telangana. It originates in the Balaghat range of hills near Ahmednagar district at an altitude of 823 metres (2,700 ft) and empties into the Godavari River. It has a total catchment area of 30,844 square kilometres (3,084,400 ha).
The River Sem is a natural waterway that flows through the ceremonial county of Wiltshire in England. It flows approximately 4+1⁄4 miles (7 km) from its source near East Knoyle to join the River Nadder near Wardour.
