Iskar (river)

The Iskar is a very long river.

It is in a land called Bulgaria.

The river starts in high mountains. It flows north through big hills. It even makes a deep path through rocks.

Many kinds of fish live in the water. There are more than 50 types of fish.

The river helps many people. It gives water to a big city. It also makes power for homes.

It is the longest river in Bulgaria. It flows into the big Danube river.

The Iskar is a long river in Bulgaria. It is 368 km long. This makes it the longest river in the country.

The river starts in the Rila mountains. These are the highest mountains in Bulgaria. It begins as three different paths. These paths join to form the river. The water flows north through the land. It flows through the Sofia Valley. This valley holds the capital city, Sofia.

The Iskar makes a deep path through the Balkan Mountains. This is called the Iskar Gorge. It is 84 km long. The walls of the gorge are very high.

Many living things call the river home. There are more than 50 types of fish. You might see a brown trout there. Some small frogs and turtles live near the banks, too.

The river is very useful for people. It provides water for the capital city. It also makes power for homes. Finally, the river flows into the big Danube river.

The Iskar is a very special river in Bulgaria. It is 368 km long in total. This makes it the longest river that stays entirely inside Bulgaria.

Other rivers like the Danube are longer, but they flow through many different countries. The Iskar is a part of the Black Sea river basin. It is also a right tributary to the Danube. This means it flows into the Danube to join it. It is the only river that starts in southern Bulgaria and flows north through the Balkan Mountains.

The river begins in the Rila mountains. These are the highest mountains in Bulgaria. The water starts as three separate forks. One is the Cherni Iskar, which is 23 km long. The second is the Beli Iskar, which is 28 km long. The third is the small Levi Iskar. These three paths join together to form the main river.

As the water moves, it fills the Iskar Reservoir. This is the largest artificial lake in the country. The river then flows through the Sofia Valley. This valley is where the capital city, Sofia, is located.

As the river moves north, it does something amazing. It cuts a deep path through the Balkan Mountains. This path is called the Iskar Gorge. The gorge is 84 km long. In some places, the rock walls are very high. They can reach 500 m in height.

At a place called Lakatnik, the river makes a sharp turn to the east. It travels through many different types of rock. Some parts of the gorge are narrow like a canyon. Other parts have wide terraces made of old earth. Eventually, the river leaves the mountains and enters the Danubian Plain.

The Iskar is a very old river. Geologists say it is the oldest river in the Balkan Peninsula. It is also unique because it kept its original direction. This happened even when the Earth changed a lot around it.

The river flows through nine different towns and many villages. It also helps about 1,600,000 people in six provinces. These provinces include Sofia, Vratsa, Lovech, and Pleven. The river is very important for the economy. It provides water for factories and for growing food. It even helps make electrical energy for people to use.

Many living things live in and around the Iskar. There are more than 50 species of fish in the water. You might find a brown trout or a wels catfish there. Some fish, like the Cottus haemusi, live only in the upper parts of this river.

Near the banks, you can find frogs and turtles. There are also different kinds of snakes and lizards. The river is a great place for people to visit for fun. People enjoy looking at the beautiful rocks and the deep gorges. While you cannot sail big boats on it, the valley is a great path for trains. The Iskar is truly a vital part of the land.

The Iskar is a major river in Bulgaria. It is 368 km long. This length makes it the longest river that stays entirely within Bulgaria. Other rivers, such as the Danube, are longer. However, those rivers flow through multiple countries. The Iskar is a right tributary to the Danube. It also forms part of the Black Sea river basin. This river is unique because it is the only one that starts in southern Bulgaria and flows north through the Balkan Mountains. These mountains act as a water divide. They separate the Black Sea basin in the north from the Aegean Sea basin in the south.

Geologically, the Iskar is the oldest river in the Balkan Peninsula. It is also the only river to keep its original direction. This happened despite many significant geological changes over time. The river's watershed drains an area of 8,617 km2. This area covers parts of six Bulgarian provinces. These include Sofia, Sofia City, Vratsa, Lovech, and Pleven. About 1,600,000 people live within the Iskar basin. The river flows through nine towns and many villages.

The river begins as three separate forks in the Rila mountain range. Rila is the highest mountain range in Bulgaria. The first fork is the Cherni Iskar. It is 23 km long and is considered the main stem. It starts at Chamovsko Lake at an altitude of 2,500 m. The second fork is the Beli Iskar. It is the longest fork at 28 km. Its springs are at the Redzhepitsa Peak. The Musalenska Bistritsa is a tributary of the Beli Iskar. It begins at the Musala Lakes near the highest summit in the Balkan Peninsula.

The third fork is the Levi Iskar. It is the smallest fork at 18 km long. These three forks eventually join to form the Iskar proper.

As the river moves, it passes through several important features. The Iskar flows through the Samokov valley at 950 m altitude. It then fills the Iskar Reservoir. This is the largest artificial lake in Bulgaria. After the dam, the river forms the 22 km long Pancharevo Gorge. This gorge divides the Vitosha and Plana Mountains from the Sredna Gora range.

The middle course begins near the village of German. Here, the river enters the Sofia Valley. The river flows through the eastern suburbs of Sofia. It even crosses the runway of Sofia International Airport. In this valley, the riverbed changes. It carries rough gravel upstream and sand downstream.

The Iskar then enters the Balkan Mountains at Novi Iskar. It forms the spectacular Iskar Gorge. This gorge is 84 km long. The rock walls are very high. They reach heights between 200 m and 500 m.

The river flows through different types of rock here. In some places, it runs through mesozoic limestone. This makes the gorge look like a narrow canyon. At Lakatnik, the river turns east. It flows through very eroded rocks. The gorge is wide here and has river terraces. These terraces are 110 to 120 m high.

After the mountains, the river enters the Danubian Plain. It flows north-east until it meets the Danube. This confluence is near the villages of Baykal and Gigen.

The Iskar is very important for the economy of Bulgaria. It provides water for the capital city, Sofia. It also provides water for many manufacturing plants. People use the water for irrigation and for generating electrical energy. The river is not navigable for large boats. However, the Iskar Gorge is a vital transportation route. It is one of only three passes in the Balkan Mountains used by a railway.

The scenic gorges and rock formations also attract people for recreation.

Many animals live in the Iskar river system. There are more than 50 species of fish. These include jawless fishes and ray-finned fishes. Some fish are endemic, meaning they are found only in certain areas. For example, the Cottus haemusi lives in the upper Iskar and Vit drainages. The wels catfish is the only member of its order in Europe. The river also supports various amphibians like frogs and newts. You can also find reptiles such as turtles and several types of snakes.

The headwaters of the river are located inside Rila National Park. Parts of the river are also protected by the Natura 2000 network.