Fig. 2

Observed and predicted Chinook salmon depth showing 2019-21 training data from 8-fold cross validation used to fit the initial random forest regression model (red; 80.1% of detections), 2019-21 out-of-sample testing data from 8-fold cross validation (green; 8.8% of detections), and out-of-sample testing data from 2022 tag deployments (blue; 11.1% of detections)