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Branches, large limbs, root boles or entire trees that have fallen into rivers are commonly
referred to as Large Woody Debris (LWD). Accumulations of smaller branches, twigs
and leaf litter are known as Coarse Woody Debris (CWD).
Woody debris is a vital component of our watercourses and its removal can severely
degrade their health. The positive ecological contribution of LWD has often been
overlooked or downplayed, while impacts on water flow and erosion have been
misunderstood or exaggerated. This booklet seeks to dispel some of the myths and
summarise the latest thinking.
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