Modelling

Hydrological modelling (HEC-HMS)

HEC-HMS modelling report (Henry Rong)

• 23/01/2025 - snapshot

  • Methods

    • SCS loss

    • SCS unit hydrograph

    • Muskingum flow routing

    • Rainfall gage weighting

  • Issues

    • Flowstation delineation creates subbasins without rainfall data

    • Negative flows

• 04/02/2025 - snapshot 

  • Methods

    • Rainfall inverse distance

    • Optimisation trials for parameter calibration

  • Issues

    • Poor model predictive utility indicated by NSE scores for non-objective flow station

  • Next steps

    • Validate best parameter set against 2019 and 2023 storms