Rotary screw traps (RSTs) are used to monitor downstream migration of salmonids throughout the Willamette Valley basin. The locations of the RSTs are in a previous sheet; this sheet shows when the RSTs were actively sampling (according to dates in cleaned RST records).
Each point represents a date where the trap was checked (i.e., every line in the RST trap log sheets in the cleaned RST workbooks prepared by Tom Porteus in July 2024).