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When does ice form on the Amur River?

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Topographic map of the Amur River basin and its drainage network, covering parts of northeastern China, eastern Russia, Mongolia, and North Korea. The map uses color shading to indicate elevation, shows major rivers and tributaries, surrounding mountain ranges, swamps, marshes, and lakes, and includes a locator inset of the region within Asia. Major cities, railways, and dams are also marked. — Amur River The Amur River basin and its drainage network.

Ice begins to form on the Amur River during the second half of October.1

The river becomes icebound at different times depending on the location:
* Upper reaches: These sections freeze at the beginning of November.1
* Lower reaches: These sections freeze during the second half of November.1

The river typically opens again in the spring, with the lower sections clearing at the end of April and the upper sections in May. During the freezing process, ice jams can occur at sharp bends in the river, which may lead to temporary, significant rises in water levels.1