USGS staff member collects sediment samples at the upstream Chicken Creek water-quality monitoring location in the Tualatin River National Wildlife Refuge.
The United States Geological Survey (USGS) is evaluating how the newly restored meandering channel on Chicken Creek affects sediment transport within the Tualatin River National Wildlife Refuge.
A portion of Chicken Creek between Roy Rogers Road and the Tualatin River (see figure 1) was straightened over a hundred years ago for agricultural purposes. In recent years the straightened portion of the creek was abandoned and filled to restore the historic meandering channel. Restoring the historic channel added approximately 1.5 miles to the length of Chicken Creek, significantly decreasing the slope of the reach and increasing the sinuosity within the Tualatin River National Wildlife Refuge. In 2019, USGS determined that stream power in the historic meandering channel was four times lower when compared to the old, straightened channel. Currently, USGS is evaluating the effects of the newly restored meandering channel on sediment transportation within the Refuge.
Monitoring location data:
Upstream water-quality monitor: Chicken Creek at Scholls-Sherwood Hwy, Sherwood OR
Downstream water-quality monitor: Chicken Creek above Seasonal Trail, near Sherwood, OR

Photos taken during field work.
USGS staff member collects sediment samples at the upstream Chicken Creek water-quality monitoring location in the Tualatin River National Wildlife Refuge.
Chicken Creek in the Tualatin River National Wildlife Refuge. The Refuge has over 200 species of birds and a variety of other wildlife.
Chicken Creek in the Tualatin River National Wildlife Refuge. The Refuge has over 200 species of birds and a variety of other wildlife.
USGS hydrologic technician, Heather Bragg, uses a 2-wheel crane to lower a sediment sampler into Chicken Creek below.
USGS hydrologic technician, Heather Bragg, uses a 2-wheel crane to lower a sediment sampler into Chicken Creek below.
USGS hydrologist, Erin Leahy, collects sediment samples at the upstream gage on Chicken Creek in the Tualatin River National Wildlife Refuge.
USGS hydrologist, Erin Leahy, collects sediment samples at the upstream gage on Chicken Creek in the Tualatin River National Wildlife Refuge.
USGS hydrologist, Erin Leahy, collecting data in Chicken Creek in the Tualatin River National Wildlife Refuge. The USGS operates two water-quality monitors along Chicken Creek.
USGS hydrologist, Erin Leahy, collecting data in Chicken Creek in the Tualatin River National Wildlife Refuge. The USGS operates two water-quality monitors along Chicken Creek.
The United States Geological Survey (USGS) is evaluating how the newly restored meandering channel on Chicken Creek affects sediment transport within the Tualatin River National Wildlife Refuge.
A portion of Chicken Creek between Roy Rogers Road and the Tualatin River (see figure 1) was straightened over a hundred years ago for agricultural purposes. In recent years the straightened portion of the creek was abandoned and filled to restore the historic meandering channel. Restoring the historic channel added approximately 1.5 miles to the length of Chicken Creek, significantly decreasing the slope of the reach and increasing the sinuosity within the Tualatin River National Wildlife Refuge. In 2019, USGS determined that stream power in the historic meandering channel was four times lower when compared to the old, straightened channel. Currently, USGS is evaluating the effects of the newly restored meandering channel on sediment transportation within the Refuge.
Monitoring location data:
Upstream water-quality monitor: Chicken Creek at Scholls-Sherwood Hwy, Sherwood OR
Downstream water-quality monitor: Chicken Creek above Seasonal Trail, near Sherwood, OR

Photos taken during field work.
USGS staff member collects sediment samples at the upstream Chicken Creek water-quality monitoring location in the Tualatin River National Wildlife Refuge.
USGS staff member collects sediment samples at the upstream Chicken Creek water-quality monitoring location in the Tualatin River National Wildlife Refuge.
Chicken Creek in the Tualatin River National Wildlife Refuge. The Refuge has over 200 species of birds and a variety of other wildlife.
Chicken Creek in the Tualatin River National Wildlife Refuge. The Refuge has over 200 species of birds and a variety of other wildlife.
USGS hydrologic technician, Heather Bragg, uses a 2-wheel crane to lower a sediment sampler into Chicken Creek below.
USGS hydrologic technician, Heather Bragg, uses a 2-wheel crane to lower a sediment sampler into Chicken Creek below.
USGS hydrologist, Erin Leahy, collects sediment samples at the upstream gage on Chicken Creek in the Tualatin River National Wildlife Refuge.
USGS hydrologist, Erin Leahy, collects sediment samples at the upstream gage on Chicken Creek in the Tualatin River National Wildlife Refuge.
USGS hydrologist, Erin Leahy, collecting data in Chicken Creek in the Tualatin River National Wildlife Refuge. The USGS operates two water-quality monitors along Chicken Creek.
USGS hydrologist, Erin Leahy, collecting data in Chicken Creek in the Tualatin River National Wildlife Refuge. The USGS operates two water-quality monitors along Chicken Creek.