Adult fish only. Every curve counts detections of
adult-confirmed tags (each fish previously passed an adult dam ladder) — smolt
detections are excluded entirely, so a May–June bump at a headwater trap is
adults arriving to spawn plus post-spawn kelts dropping back, never outmigrating
smolts. The season reads left to right, July through June. The bottom row is the
river's last dam: when fish later detected in this drainage passed it. Peaks
march later as you climb within a branch, but branches run on their own
clocks — upstream is not uniformly later. Climb rates (top right) are fit per
branch, never across branches. The ⚠ mark = a partial-record array (newer
antenna, fewer years behind its curve).