Water Data for Nisqually River Delta at Site D3 (ver. 1.1, December 2019)

An upward-looking acoustic Doppler velocity meter (ADVM, SonTek SW, 3.0 MHz) located in a tidal channel of the Nisqually River Delta at site D3 (N 47d 05’ 36.5”/W 122d 42’ 42.9”) measured water level and current velocity at 15-minute intervals from April 1, 2017 to July 20, 2017 (80.9 days, excluding missing periods). This site is in a tidal channel at a levee breach where flow is tidally influenced. The water depth of the sensor ranged from 0.05 to 3.04 m and may have been lower during periods of extreme low tide. The elevation (NAVD88) of the ADVM sensor was surveyed by RTN-GPS. The offset to convert all water depth time-series data to water surface elevation (NAVD88) is 0.47 meters. The instrument temperature ranged from 7.2 to [...]