Alternate Leg ID: IB E-30-00-WA
Area of Operations: John Day Reservoir, Columbia River, Washington, Oregon, United States, North America
Dates: September 13, 2000 to September 28, 2000
Objectives: High-resolution seismic reflection, sidescan mapping, and sediment sampling of reservoir floor to determine the amount, distribution and types of sediment being trapped. These data are important to understanding changes in salmon spawning grounds and to quantifying changes in sediment supply to the coast.
Type of Activity: Sampling
Sea floor mapping
Information to be derived: Grain size analysis
Sea Floor Map
Summary: Sidescan sonar: 287.7km; Sub-bottom: 287.7km; Video transects: 48; Sediment samples: 41; Bottom photos: 130
USGS Project Number: 7440-33780
Contact: Dave Twichell (email@example.com)
InfoBank: uses the identifier E-30-00-WA. Visit this site for more information.