Comparisons are relative to pooled upstream reference conditions; d/s- downstream. Shading and lines bracketing the reference condition line indicate the 95% confidence interval (CI) on the mean reference condition values. Shading around the reference lines in their respective plots indicates the narrower CIs for inveterate taxa richness and Shorthead Sculpin densities; dotted lines bracketing the reference lines indicate CIs for mayfly and stonefly abundance (identical), and Rainbow Trout.