Field code	Description	Typical photograph
Field indicators: large woody debris
D1	Small woody debris. Abundant small-sized woody debris pieces (commonly logs with saw-cut ends and detached root wads and branches). Typical of aggrading channels.
D2	Function of LWD. The majority of LWD does not span the channel width as the orientation of individual LWD pieces shifts from perpendicular to parallel (relative to the channel banks). Typical of both aggrading and degrading channels in RP and CP morphologies.
D3	Recently formed LWD jams. Typical of aggrading channels (but can occur in degrading channels) in RP and CP morphologies.