Raw and processed timeseries data generated during field testing of a single oscillating hydrofoil Water Horse prototype at PMEC (Pacific Marine Energy Center) Tanana River Test Site in Nenana, AK in July 2020. Data collection by University of Alaska, Fairbanks. This submission includes the merged timeseries data from ADCP (acoustic Doppler current profiler), ADV (acoustic Doppler velocimeter), and Campbell Scientific logger of electrical and mechanical transducers. - ReadMe: outlining the contents of "2020_Water_Horse_Test _Data.zip" - 2020_Water_Horse_Test _Data.zip: field test content model metadata, design drawings, meta analysis, integrated raw dataset (MATLAB format), integrated analyzed dataset (MATLAB format), data analysis (MATLAB), and data plots (MATLAB).