East Twin LWD Project (Funded 2000)
Current Status: Active
This project will help to re-establish the dominant ecological processes
of East Twin River to improve and protect water quality and productive
fish habitats. The project will restore wood to the channels to provide
for natural storage and routing of sediment as well as cover for fish;
help to rebuild adequate riparian forests to improve fish habitat and water
quality, and provide vital off-channel winter habitat for salmon.
It is anticipated the project will create about 3 miles of improved spawning
habitat, 3 miles of improved rearing habitat and 4 miles of improved riparian
forest habitat. The WRIA 19 Limiting Factor Analysis verifies that these
channel reaches are LWD depleted and suffer from excessive sedimentation.
Logging activities have also heavily impacted the riparian area.
LWD placement into Sadie Creek will be accomplished by tower and cable
from existing landings and/or by helicopter. The Instream work in Sadie
Creek will be done by a contracted "Spider". LWD placement into
the East Twin will primarily be constructed conifer logjams done by track
hoe. Some on site wood will be utilized in the East Twin; however, logs
will be trucked in to meet the wood requirement. The East Twin segment
will be modeled to emulate the Deep Creek and Little Hoko Restoration Projects.
The Sadie Creek segment of the project will be used to evaluate the feasibility
of employing this restoration technique on a much larger scale on other
wet side rivers.
|