In
the project area, human-caused alterations have changed the
natural hydrological function of the river, in turn; limited
habitat values remain for fish and wildlife. Natural hydrological
functions have been impacted through the conversion of wetlands
to agriculture land via diking and draining by prior landowners.
Currently the levee prevents diurnal flooding of the bottomland
area during high tide and restricts juvenile salmonids from
utilizing rearing habitat. The figure below shows the loss
of various habitat types over time. The habitat undergoing
the most dramatic decrease was tidal swamps with over 23,000
acres lost from 1870-1980.
To
restore connectivity to the site activities will include three
breaches in the existing levee to promote restoration of tidal
swamps, forested wetlands, fish and wildlife habitat and water
quality. The total acreage affected is 50, 30 for tidal swamp
and 20 for bottomland. Wetland channels within the restored
site will be enhanced and drainage ditches will be plugged/filled.
Construction of a new levee will provide the downstream landowner
flood protection from the restoration effort. To ensure long-term
protection of the property, the landowner has enrolled in
the Wetland Reserve Program with NRCS purchasing a conservation
easement in the area.
The
project will be monitored for a minimum of 5 years for juvenile
salmonid abundance and diversity. Monitoring will include
PIT (Passive Integrated Transponders) tags, seining, weighting,
measuring and collecting genetic samples. Collected data will
help determine residency time and what watershed origin. Sea
Resources will coordinate the monitoring with the help of
Astoria High School.
In
summer 2004, students from Upward Bound implemented vegetation
monitoring to determine species and abundance before the dike
is breached. The program is committed to monitoring in 2005
and 2007.
Click
here
for the Vegetation Data Report. 
Project
partners and funders for the projects include:
-
Youngs Bay Watershed Council
- Sharnelle Fee (North Coast Wildlife Rehab Center)
- Ducks Unlimited
- Natural Resource Conservation Service
- Oregon Watershed Enhancement Board
- CREST
- Sea Resources
Total
project cost is approximately $321,000