3.2 Spatial patterns of scaling across basins
In contrast to relatively similar scaling relationships by HEF quantile observed in Figure 2, spatial arrangement of scaling behaviors differed notably between the two study basins (Figure 3). Uncertain relationships predominantly occurred for smaller stream reaches (with less cumulative HEF) in the lower-elevation portions of each catchment (Figure 3, Figure S1), and was more widespread across the majority of the YRB, but largely present near the main stem in the WRB (Figure 3). No Sublinear scaling was observed in WRB, while reaches with Sublinear scaling in the YRB were primarily located in the higher-elevation headwaters (Figure S1). Linear scaling in the YRB was limited to higher-elevation reaches, but distributed fairly widely across the WRB (Figure 3). Super-linear scaling occurred primarily along the main stem in YRB, but largely in the forested headwaters in WRB (Figure 3). Across each basin, the WRB transitioned from Super-linear in headwaters through Linear into Uncertain for tributaries near the main-stem, while the YRB transitioned from a mix of Super-linear, Linear, and Sublinear to Uncertain, and both main-stems were consistently Super-linear.