Hydro‐Geomorphic Metrics for High Resolution Fluvial Landscape Analysis

Topographic metrics are designed to quantify scale-relevant relationships between geometric properties of landscapes reveal the processes shaping them. They have long been derived from topographic flow routing algorithms, initially developed for coarse Digital Elevation Models (DEMs), whose resolution (≥30 m) and poor precision did not resolve correctly patterns channel width. Since high DEMs make description meter-scale possible, new methods required analyze landforms structures such as hillslope-channel connections, width or floodplains. Here, we investigate potential 2D hydraulic simulations based on shallow water equations replace classical slope versus drainage area analysis, river morphology identify We apply Floodos model 1 m DEM Elder Creek catchment, California, which derive three hydro-geomorphic accounting geometry: a specific extended channels, an effective slope. catchment through what call slope-area diagram allowing better identification connections than approach. The is analyzed along network characterized by power-law relationship consistent with previous observations. multi-runoff approach automatically floodplains evaluate along-stream variations in geometry. offer geomorphic analysis suitable opens up perspectives fluvial landscape analysis.