Fig. 6. Example of preferential funnel or matrix flow processes on subsurface soil moisture as a function of proximity to a ground-penetrating radar (GPR)–identified flow pathway. Soil moisture content was determined at 1.2-, 1.5-, and 1.8-m depths. Arrows indicate precipitation events of >5 mm. The BM3 and BM1 soil moisture probes are 5 and 15 m away from GPR-identified flow pathways, respectively.