Fig. 3

(Top) Leadline depth relative to the tidal cycle. Thick lines show the median of all depth measurements in each tidal hour; shaded regions show the 25th–75th depth percentiles. (Bottom) Leadline depths sorted from shallowest to deepest tidal hour, rather than chronologically. The stack of 3 numbers on the x-axis provides the tidal hour for each net type. Times of high (H) and low (L) tides are indicated, and the three horizontal lines show the potential maximum net depths assuming 5″ mesh. For comparison, the right-hand plots in both panels show the depth distribution of Chinook and sockeye measured near the western boundary of the ESSN in 2013