Current through Register Vol. 22-07, April 1, 2022
Large woody debris removal or repositioning projects shall
incorporate mitigation measures as necessary to achieve no-net-loss of
productive capacity of fish and shellfish habitat. The following shall apply to
large woody debris removal or repositioning:
(1) Large woody debris removal from streams
shall only be approved where necessary to address safety considerations, or
where its removal would not diminish the fish habitat quality of the
watercourse. The department may approve the repositioning of large woody debris
within the watercourse to protect life and property or as needed to conduct a
forest practices hydraulic project. Repositioned large woody material shall be
placed or anchored to provide stable, functional fish habitat.
(2) Large woody debris removal shall be
conducted by equipment stationed on the bank, bridge, or other approved
(3) Unless otherwise
authorized, large woody debris shall be suspended during its removal so no
portion of the large woody debris or limbs can damage the bed or banks. Yarding
corridors or full suspension shall be required to avoid damage to riparian
vegetation. It may be necessary to cut the large woody debris in place, to a
size that allows suspension during removal.
(4) Smaller limb and bark debris associated
with the large woody material shall be removed and disposed of so as not to
reenter the typed water.
woody debris embedded in a bank or bed shall be left undisturbed and intact
except where authorized for removal.
(6) Large woody debris removal or
repositioning shall be accomplished in a manner which minimizes the release of
bedload, logs, or debris downstream.
(7) Depressions created in gravel bars shall
be filled, smoothed over, and sloped upwards toward the bank on a minimum two
Wash. Admin. Code § 222-30-062
76.09.040(3). WSR 13-21-032,
§ 222-30-062, filed 10/8/13, effective 12/30/13. WSR 13-21-003, §
222-30-062, filed 10/3/2013, effective