Logs, stumps, or root wads in the stream channel, or nearby. These function to create pools and cover for fish, and to trop and sort stream gravels.
Woody debris in a stream, lake or wetland setting, during at least part of the year, with a diameter of 10 cm or greater and a length of two metres orĀ greater.
logs or large pieces of trees that fall into streams and form important habitat elements for fish; also called large organic debris (LOD).
A large piece of woody material in a stream channel whose diameter is greater than ten centimeters and length is greater than one meter. A very beneficial determinate of fish-habitat quality.
Large logs, generally at least 12 inches in diameter with an anchored root ball, that have fallen into streams creating stable structures and a diversity of cover conditions and habitat for aquatic organisms.
Pieces of wood larger than 10 feet long and 6 inches in diameter, in a stream channel.
Pieces of wood larger than 10 feet long and 6 inches in diameter, which have fallen into, or been place in streams to create resting pools for salmon.
Logs, limbs, or root wads 4 inches or larger in diameter, delivered to river and stream channels from streamside forests (in the riparian or upslope areas) or from upstream areas. LWD provides streambed stability and habitat complexity. LWD recruitment refers to the process whereby streamside forests supply wood to the stream channel to replenish what is lost by decay or downstream transport.