log jam
accumulation of large wood that can span an entire stream or river channel, preventing movement downstream (common in North America during historical period of moving lumber using rivers)
en-GB/ˈlɒɡ ˈd͡ʒæm/
en-US/lɑɡ ˈd͡ʒæm/
accumulation of large wood that can span an entire stream or river channel, preventing movement downstream (common in North America during historical period of moving lumber using rivers)