In situ measurements of water depth collected with acoustic Doppler current profilers and remotely sensed depths acquired with a software-defined radar deployed from an uncrewed aircraft system, Sacramento River, California, September 18-19, 2024

A reach of the Sacramento River near Glenn, California, was selected as a field site to test the performance of a software-defined radar (SDRadar) developed by the University of Southern California. The SDRadar can be deployed from an uncrewed aircraft system (UAS) and is designed to measure river depth.  This data release contains measurements of river depth collected with two different models of acoustic Doppler current profilers (ADCPs) on separate days. One ADCP was operated from a crewed boat on September 18, 2024 (file 091824_ADCP_depths.csv) and the second ADCP was operated from a remote-controlled boat on September 19, 2024 (file 091924_ADCP_depths.csv). Each ADCP collected depth along multiple passes across the river following the path of a predefined cross section. Corresponding depths were collected on September 18, 2024 (file 091824_SDRadar_B.csv) and on September 19, 2024 (file 091924_SDRadar_A.csv) with the UAS-based SDRadar over the same predefined cross section. The designations A and B in the file names refer to specific flights that are referenced in an associated manuscript. A temporary pressure transducer installed along the reach indicated that water surface elevation was nearly identical between the two days. The ADCP data is provided as a comma delimited text file with the following column headers and descriptions: 1) x_meters: easting (x) spatial coordinate in meters; 2) y_meters: northing (y) spatial coordinate in meters; 3) depth_meters: depth in meters;  The spatial coordinates are projected in Universal Transverse Mercator (UTM) Zone 10, NAD83 horizontal datum. The SDRadar data is provided as comma delimited text files with the following column headers and descriptions: 1) Date and Time [UTC]: The date and time of the measurement; 2) Latitude [deg]: the latitude of the measurement location, in decimal degrees; 3) Longitude [deg]: the longitude of the measurement location, in decimal degrees; 4) Elevation [m]: the elevation of the GPS antenna, in meters; 5) UAS Height [m]: the height of the UAS above the water surface as measured by the radar, in meters; 6) Water Depth [m]: the water depth measured by the radar, in meters.