Log jam

A log jam is an accumulation of large wood (commonly defined as pieces of wood more than 10 cm in diameter and more than one metre long also commonly called large woody debris) that can span an entire stream or river channel.

Historically in North America, large "log rafts" were common across the continent prior to European settlement. The most famous natural wood raft is the "Great Raft" on Louisiana's Red River, which prior to removal in the 1830s affected between 390–480 km of the main channel. It has been suggested that such extensive log rafts may have been common in Europe in pre-history.

单词	Log jam
释义	Log jam 英语例句库 The logs jammed in the river. 圆木挤塞在河里。原声例句 BBC 听力 2015年2月合集 The Senate is due to vote again on Monday in an attempt to break the log jam. 参议院应该在周一再次表决，以期打破僵局。英语百科 Log jam A log jam is an accumulation of large wood (commonly defined as pieces of wood more than 10 cm in diameter and more than one metre long also commonly called large woody debris) that can span an entire stream or river channel. Historically in North America, large "log rafts" were common across the continent prior to European settlement. The most famous natural wood raft is the "Great Raft" on Louisiana's Red River, which prior to removal in the 1830s affected between 390–480 km of the main channel. It has been suggested that such extensive log rafts may have been common in Europe in pre-history.
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