Kolyma (river)

The Kolyma is a large river in Russia.

It flows through cold lands. The river stays frozen for most of the year. It only melts in early June.

The river flows across a flat plain. This plain has many lakes. The river ends at a cold sea.

Many islands sit near the end of the river. Some islands are very big. Others are small groups of land.

People live in small towns near the water. They catch fish to eat. They also hunt for food.

The river is a very special place.

The Kolyma is a large river in northeastern Siberia.

It flows through parts of Russia. The river stays frozen for about 250 days each year. The ice can be several metres deep. It only melts in early June.

The river starts in the mountains. It flows south at first. Then it flows north across a vast plain. This plain is part of the East Siberian Lowland. It has thousands of lakes. The river ends at the Kolyma Gulf. This gulf is part of the Arctic Ocean.

Near the mouth of the river, there are many islands. Mikhalkino is the largest island.

There is also an old bridge in the town of Debin.

People live in small towns like Chersky and Srednekolymsk. Many people hunt and fish for food. In some places, they store fish in caves. These caves are made from permafrost. Permafrost is ground that stays frozen. Scientists even found 30,000-year-old plants in this frozen ground! A large dam at Sinegorye makes power for the region. This dam is very special because it is built in the frozen earth.

The Kolyma is a major river in northeastern Siberia.

It flows through parts of the Sakha Republic, Magadan Oblast, and the Chukotka Autonomous Okrug in Russia. This river is a very cold place for much of the year. It stays frozen to depths of several metres for about 250 days each year. The ice only goes away in early June. It stays free of ice until October. This long freeze defines much of life in the region.

The river begins at the meeting point of the Kulu and the Ayan-Yuryakh rivers. This happens in the Okhotsk-Kolyma Upland. At first, the river flows south through the Upper Kolyma Highlands. Later, it leaves the mountains and flows north. It moves across the Kolyma Lowland, which is a huge plain. This plain is part of the East Siberian Lowland and has thousands of lakes. Finally, the river empties into the Kolyma Gulf in the East Siberian Sea.

People have explored this area for a long time. In 1641, Mikhail Stadukhin and Semyon Dezhnyov traveled through the area. Stadukhin reached the Kolyma in the summer of 1644. Later, Baron Eduard Von Toll led a scientific group there. Between 1892 and 1894, his team did geological surveys. They traveled over 10,000 kilometres, including many trips up rivers. The river is also known for its history of gold mining and labor camps.

Many islands sit where the river meets the sea. Mikhalkino is the largest island in this area. It is located west of a branch called the Kamennaya Kolyma anabranch. Other islands include Sukharnyy, which is 3 kilometres from Mikhalkino. There is also the 5-kilometre-long Piat' Pal'tsev island. Near the western branch, you can find Nazarovsky Island.

Another island, Shtormovoy, is the northernmost one at the mouth of the river.

Life on the Kolyma involves working with the frozen land. The Kolyma Hydroelectric Station at Sinegorye is a huge earthen dam. It is about 150 feet high and provides electricity to the region. This dam is special because it uses frozen earth to stay strong. In some fishing towns, people use caves in the permafrost to store fish. Scientists even found 30,000-year-old plants growing from seeds found in this frozen ground.

The Kolyma is a major river located in northeastern Siberia, Russia.

Its vast drainage basin covers parts of the Sakha Republic, the Chukotka Autonomous Okrug, and the Magadan Oblast. This river is defined by extreme cold and a massive landscape. It remains frozen to depths of several metres for approximately 250 days every year. The ice typically disappears in early June and stays away until October. This seasonal cycle shapes the entire environment of the Kolyma basin.

The river begins at the confluence of the Kulu and the Ayan-Yuryakh rivers. This meeting point occurs within the Okhotsk-Kolyma Upland. This upland sits in a watershed that separates the Kolyma basin from rivers flowing into the Sea of Okhotsk. In its upper course, the river flows roughly southwards through the Upper Kolyma Highlands. After leaving these mountains, it turns northwards. It then travels across the Kolyma Lowland, which is a vast plain within the East Siberian Lowland. This plain is characterized by thousands of lakes. Finally, the river empties into the Kolyma Gulf of the East Siberian Sea, which is part of the Arctic Ocean.

Many tributaries feed into the Kolyma as it flows toward the sea. These include the Ayan-Yuryakh and the Kulu near the source. Other significant rivers that join the Kolyma include the Seymchan, the Balygychan, and the Omolon. The river also receives water from the Bolshoy Anyuy and Maly Anyuy. As the river nears its mouth, it divides into two large branches. One branch is known as the Kamennaya Kolyma anabranch. The other is called the Prot. Pokhodskaya Kolyma.

At the mouth of the river, numerous islands are scattered across the delta. Mikhalkino is the largest island in this region. It sits to the west of the Kamennaya Kolyma anabranch. This island is long and wide, and it even breaks into smaller islands at its northern end. Another island, Sukharnyy, lies 3 kilometres from the northeastern shores of Mikhalkino. Nearby, the Morskiye Sotki Islands form a small cluster. Other notable islands include Piat' Pal'tsev, which is 5 kilometres long. Nazarovsky Island sits on the western side of the Prot. Pokhodskaya Kolyma. The northernmost island in this area is Shtormovoy Island.

History shows that the Kolyma has been a site of exploration and industry for centuries. In 1644, Mikhail Stadukhin reached the river and built a zimovye, or winter quarters. Between 1892 and 1894, Baron Eduard Von Toll led a geological survey expedition. His team covered over 10,000 kilometres to study the basin. The river is also famously associated with gold mining and the Soviet Gulag labour camps. This history was documented in Varlam Shalamov's book, The Kolyma Tales. Today, many people in the region survive through fishing and hunting.

Human engineering has also made a significant mark on the river. The Kolyma Hydroelectric Station at Sinegorye is a massive earthen dam. It stands about 150 feet high and provides most of the electricity for the region, including Magadan. This dam is unique because it uses air circulation tubes. These tubes carry frigid winter air into the dam's core. This process keeps the earth inside frozen, which stabilizes the structure. Kolyma Ges. stated this was the largest dam ever built in a permafrost region.

The permafrost around the Kolyma provides unique scientific and practical opportunities. In small fishing settlements, residents sometimes store fish in caves carved directly into the permafrost. This frozen ground also preserves ancient biological material. In 2012, scientists reported growing plants from 30,000-year-old Silene stenophylla fruit. These seeds had been stored in squirrel burrows near the river banks. This discovery highlights how the river's frozen environment acts as a natural time capsule.