Fig. 1

Map of study area showing positions of moored acoustic receivers. Open circles show receivers that did not detect alewife. Groups of receivers are named and color coded. A shaded red box corresponds to the FORCE test site in Minas Passage. Bathymetry below mean sea level was obtained from the model used by Karsten et al. [28]. Outset shows layout of the White Rock generating station and fish bypass (yellow). Tagged alewives were released near the fish ladder