large woody debris
Any large piece of woody material that intrudes into a stream channel, whose smallest diameter is greater than 10 cm, and whose length is greater than 1 m. A large piece of relatively stable woody material having a diameter greater than 30 cm (12 inches) and a length greater than 2 m (6 feet) that intrudes into the stream channel. Specific types of large woody debris include floating logs, boles, deadheads, root wads, etc.
Selected large woody debris links:
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