The morphological characteristics of catchments are key controls on how flow is routed through and the spatial temporal dynamics floods, therefore influencing shape hydrographs at any location. Here, we developed a hydro-morphic catchment classification to understand extent which various act as flood behaviour. include: size (as measured by gauge position in valley confinement site), (elongation ratio form factor), topography (catchment relief longitudinal slope), drainage network structure...

Abstract Natural flood management (NFM), a nature‐based solution to mitigation where hydrological and biophysical processes are harnessed reduce flow velocity, erosive energy risk, is an emerging global theme of water river management. The catastrophic 2021 2022 floods in eastern Australia used assess the properties discrete events start investigation whether widespread changes hydrology occurring. We find that most coastal rivers New South Wales (NSW) had noticeable decrease wave celerity...

Abstract Digital Elevation Models (DEMs) act as an essential input to hydraulic models for the simulation of flood hazard maps. Coarser resolution DEMs are subject higher levels uncertainty, particularly in capturing river‐bed bathymetry. The principal aim present study was assess potential use freely available and 1D 2D HEC‐RAS modeling approaches mapping four different types river morphology. DEM created from direct survey (Surveyed DEM) used a benchmark three remote sensing‐based (i.e.,...

The shape characteristics of flow hydrographs hold essential information for understanding, monitoring and assessing changes in flood hydrology at reach catchment scales. However, the analysis individual is time consuming, making hundreds or thousands them unachievable. A method protocol needed to ensure that datasets being generated, metrics produced, have been consistently derived validated. In this lab protocol, we present workflows Python extracting with any available temporal resolution...

Abstract Since European colonisation, many coastal rivers of New South Wales (NSW) have been highly modified by channelisation, flow regulation, sediment mining, intensive grazing and agriculture, deforestation, riparian vegetation wood removal. the late 1980s, nearly 55% these undergone a significant ‘re‐greening’ geomorphic recovery with changes to instream roughness. However, little research has undertaken quantify if there any coeval in hydrology. Approximately 7000 hydrographs one‐hour...

Flood dynamics, and in particular the shape of flood hydrographs, are influenced by a mix catchment morphometric characteristics. To identify different hydrograph shapes key controls on them, we use hydro-morphic classification method. A total 1,584 high flow (near bankfull) hydrographs 868 overbank from rivers 17 coastal catchments New South Wales (NSW), Australia used.We find three clusters for flows floods. On average, across all floods, elongation ration (Er) relief (Rh) dominant shape,...

The shape characteristics of flow hydrographs hold essential information for understanding, monitoring and assessing changes in flood hydrology at reach catchment scales. However, the analysis individual is time consuming, making hundreds or thousands them unachievable. A method protocol needed to ensure that datasets being generated, metrics produced, have been consistently derived validated. In this study protocol, we present workflows Python extracting with any available temporal...