Moving Ahead
with Migration Barrier Removal. Mendocino County began its
Migration Barrier Removal Program in 2001 with the completion of 3 Migration
Barrier Modification Projects on Branscomb Road. Together, these three
projects restored access to approximately 2.4 miles of habitat for steelhead
trout. Since then, the County has completed 6 additional projects. The County
has slated 1 project for construction in 2007, Ryan Creek. All project
have restored access to 15 miles of spawning and rearing habitat.
Project
Spotlight: 10 Mile Road
Sediment Reduction Project
Located in the Garcia River Watershed, the sediment reduction
project on 10 Mile Road in Mendocino County helped to prevent the delivery
of over 4,000 cubic yards of sediment to a stream.
BEFORE: Inboard ditch road with no drainage
relief for 1,000 feet, subject to severe rutting during winter by concentration
of water contained by road berm
AFTER: Applied 8" rock, filled inboard
ditch, and sloped at 4% into rock armored bank to relief outsloped section.
10 Mile Sediment
Reduction Project:
Photo Monitoring Log >>
Completed in 2001, the Migration Barrier
Modification Project on Bear Creek restored access to steelhead trout habitat
on Bear Creek above Branscomb Road. Steel baffles were installed and cemented
into the culvert bottom. This project was completed in conjuction with 2 other
barrier modifications on Branscomb Road at Windem Creek and Taylor Creek.
