Large Woody Debris (LWD) is defined as woody material with a small end diameter greater than or equal to 10 cm (4 in.) and a length of at least 1.5 m (5 ft.).
The tally includes all woody material that are at least partially in the baseflow channel, the active channel (i.e., bankfull channel)
or spanning the active channel. This includes rootwads of live trees.
IMW Complex 2005
Field Season
Watershed
LWD
(pieces/mile)
Percent
Functional 1
Hood
Canal
Big
Beef
683
65%
Little
Anderson
810
76%
Seabeck
806
58%
Stavis
951
72%
Lower
Columbia
Abernathy
203
78%
Germany
177
76%
Mill
303
60%
Strait
of Juan de Fuca
Deep
632
69%
East
Twin
877
74%
West
Twin
626
76%
1 - Functional is defined as all or part of the piece extending within
the bankfull channel.
