Water-surface elevations were recorded by 12 submerged pressure transducers deployed from fall 2017 to summer 2018 along an approximately 25-km reach of the Siletz River, Oregon. All pressure transducers were deployed in the main channel of the Siletz River. The water-surface elevations were surveyed by using a real-time kinematic global positioning system (RTK-GPS) at each pressure sensor location. Data from 10 of the 12 loggers were used to calibrate hydraulic models for sections of the Siletz River.

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.

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.

This dataset includes locations and water surface elevation measurements from submersible pressure transducers deployed in channels of three rivers in Alaska: Susitna and Yukon Rivers (July-October 2020), and Nushagak River (May to September 2021).

The U.S. Geological Survey deployed seven submersible pressure transducers on the bottom of the Salcha River in July 2018. An additional transducer was left out of the water to correct for barometric pressure fluctuations. At the time of deployment, the bank position near each transducer and the water-surface elevation were measured with real-time kinematic GPS equipment. The transducers collected a depth measurement every 15-min until the recovery of five of the seven in October. We adjusted the water elevation measured at deployment by the difference between the depth measured at deployment and each subsequent depth measurement to derive the water-surface elevation at 15-min intervals. The data included as part of this release include the horizontal location of the five transducers and water-surface elevation at the time of deployment. In addition, the date, time, water temperature, barometric pressure control reading, barometric pressure compensated depth measurement, and computed water-surface elevation are reported for each recovered transducer.

Water-surface elevations were recorded by 17 submerged water level loggers between March and October, 2016 along a 3 kilometer reach of the upper Deschutes River, Oregon. 15 water level loggers were installed along the channel margins and 2 loggers were placed in off-channel wetland ponds. Submerged depths recorded at each logger were converted to water surface elevations using real-time kinematic global positioning system (RTK-GPS) measurements of water surface elevation near each water level logger location. Water surface elevation recorded at the loggers captured discharges ranging from approximately 600 to over 2,000 cubic feet/second recorded at the Bureau of Reclamation gage at Benham Falls.

This dataset includes locations, and water surface elevations from two submersible pressure transducers deployed in the channel of the Tanana River downstream of Fairbanks Alaska in 2016.

Continuous records of water level altitude at 16 U.S. Geological Survey (USGS) streamgaging stations (15 streams and 1 lake) were retrieved from the National Water Information System (NWIS) and averaged for the months of April and May, 2013. This shapefile consists of the locations of those sites and includes water level altitude data stored in the attribute table. The shapefile was created and intended for use with geographic information system (GIS) software. The site locations and water level data are also presented in Sheet 1 of Scientific Investigations Map 3326.

Continuous records of water level altitude at 16 U.S. Geological Survey (USGS) streamgaging stations (15 streams and 1 lake) were retrieved from the National Water Information System (NWIS) and averaged for the months of April and May, 2013. This shapefile consists of the locations of those sites and includes water level altitude data stored in the attribute table. The shapefile was created and intended for use with geographic information system (GIS) software. The site locations and water level data are also presented in Sheet 1 of Scientific Investigations Map 3326.

Twenty one submersible pressure transducers were deployed along the Green River near Jensen, Utah in late February 2018. At some locations two transducers were deployed at different elevations to capture the expected range of water level fluctuations, an "upper" and "lower" transducer. Two additional transducers were left out of the water to correct for barometric pressure fluctuations. At the time of deployment, the position of a reference point located on a t-post to which each transducer was mounted was measured with real-time kinematic GPS equipment. In addition, a tape down or the distance between the reference point to the water surface was recorded.The transducers collected a depth measurement every 15 minutes until their recovery in September. Seventeen of the twenty one transducers were recovered. We adjusted the water-surface elevation measured at deployment by the difference between the depth measured at deployment and each subsequent depth measurement at the recovered transducers to compute the water-surface elevation at 15-minute intervals.