This project built a wood revetment 500 feet from the toe of the Steelhead haven landslide thereby reducing fine sediment inputs into the North Fork Stillaguamish. A sediment retention pond was also constructed to capture surface erosion off of the landslide, also reducing fine sediment inputs into the North Fork Stillaguamish River.

1. www.stillaguamishwatershed.org
Dedicated to restoring and
maintaining a healthy
Stillaguamish River Watershed
since 1990

2. The mission of the Stillaguamish Watershed Council
(SWC) is to maintain a healthy, functioning Stillaguamish
Watershed by providing a local forum in which
agencies, organizations, communities, and the public can
engage in a collaborative watershed based process of
decision making and coordination.
This slideshow highlights the work of the SWC
www.stillaguamishwatershed.org

3. Steelhead Haven Fine Sediment Reduction Project
Sponsored by the Stillaguamish Tribe of Indians
This project built a
wood revetment 500
feet from the toe of
the Steelhead haven
landslide thereby
reducing fine
sediment inputs into
the North Fork
Stillaguamish. A
sediment retention
pond was also
constructed to
capture surface
erosion off of the
landslide, also
reducing fine
sediment inputs into
the NF Stillaguamish.
Location

4. Steelhead Haven Fine Sediment Reduction Project
Sponsored by the Stillaguamish Tribe of Indians
Expected Change This project built a
wood revetment 500
feet from the toe of
the Steelhead haven
landslide thereby
Log Cribwall Placement reducing fine
sediment inputs into
the North Fork
Stillaguamish. A
Expected Channel Migration
sediment retention
pond was also
constructed to
Expected Head cut capture surface
erosion off of the
landslide, also
reducing fine
sediment inputs into
the NF Stillaguamish.
Project Site Plan

5. Steelhead Haven Fine Sediment Reduction Project
Sponsored by the Stillaguamish Tribe of Indians
Cribwall 1,300 feet long, 25 feet What the river will see
high
This project built a wood revetment 500 feet from the toe of the Steelhead
haven landslide thereby reducing fine sediment inputs into the North Fork
Stillaguamish.

6. Steelhead Haven Fine Sediment Reduction Project
Sponsored by the Stillaguamish Tribe of Indians
This project built a wood revetment 500
feet from the toe of the Steelhead haven
landslide thereby reducing fine sediment
inputs into the North Fork Stillaguamish.
Left: Aerial view of the wood
revetment backfilled with wood
debris
Below: Close up of backfill

7. Steelhead Haven Fine Sediment Reduction Project
Sponsored by the Stillaguamish Tribe of Indians
20 Acre-feet of storage During the first flooding event the river
migrated toward the structure as
designed
A sediment retention pond was also constructed to capture surface
erosion off of the landslide, also reducing fine sediment inputs into
the NF Stillaguamish.

8. For more information about the Stillaguamish
Watershed Council visit our website at:
www.stillaguamishwatershed.org