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Water surface elevations recorded by submerged pressure transducers along the upper Willamette River, Oregon, Spring, 2015


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Lind, G.D., Wellman, R.E., and Mangano, J.F., 2017, Water surface elevations recorded by submerged pressure transducers along the upper Willamette River, Oregon, Spring, 2015: U.S. Geological Surveydata release,


Water-surface elevations were recorded by submerged pressure transducers in Spring, 2015 along the upper Willamette River, Oregon, between Eugene and Corvallis. The water-surface elevations were surveyed by using a real-time kinematic global positioning system (RTK-GPS) at each pressure sensor location. These water-surface elevations were logged over a small range of discharges, from 4,600 cubic feet per second to 10,800 cubic feet per second at Harrisburg, OR. These datasets were collected for equipment calibration and validation for the National Aeronautics and Space Administration’s (NASA) Surface Water and Ocean Topography (SWOT) satellite mission. This is one of multiple datasets that will be released for this effort.


Point of Contact :
Oregon Water Science Center
Originator :
Greg D Lind, Roy E Wellman, Joseph F Mangano
Metadata Contact :
Greg D Lind
publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
USGS Mission Area :
Water Resources
SDC Data Owner :
Oregon Water Science Center

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Water_surface_elevations.txt 701.59 KB text/plain
Water_surface_Ellipsoid_heights.txt 682.1 KB text/plain


The NASA SWOT satellite, which is scheduled for launch in 2020, will monitor the earth’s fresh water with better resolution and precision than what had previously been possible for a space-based platform. The primary SWOT measurements will be used to generate estimates of river discharge that are meant to obtain river fluxes globally at high accuracy and reach lengths of tens of kilometers, even in inaccessible areas of the world or areas where in-situ measurements are not available. Prior to the launch of the SWOT satellite, the wide-swath interferometer is attached to an airplane for thorough calibration and validation (at which time it is referred to as AirSWOT). The Willamette River in northwest Oregon is one site used to calibrate and validate AirSWOT measurements and discharge calculations because it is large enough for the resolution of the SWOT equipment, it is relatively accessible for intensive collection of ground-based data, it is studied by regional agencies, and it has a high density of streamflow-gaging stations. The U.S. Geological Survey (USGS) and University of Oregon (UO) collected ground-based survey measurements for validation with AirSWOT surveys of the Willamette River in the spring of 2015. In addition to the validation goals, these datasets may be useful for other studies along the reach including hydraulic models and habitat assessments.



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DOI doi:10.5066/F7BZ647F

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