Forty-three years of daily rainfall and streamflow across 24 basins showed both models above NSE 0.90 in humid stable basins but below 0.5 in arid variable catchments.
Key findings
- RF outperformed in 18 basins, especially intermittent and low-flow settings. Both achieved NSE>0.90 in humid stable basins and
Why this matters globally
The diagnostic framework supports regime-based model selection and warns that the most management-critical variable basins may be hardest to predict.
Thai researcher contribution
An Asian Institute of Technology researcher contributed to a cross-regime streamflow-model selection framework.
Limitations to consider
The abstract omits basin locations, final splits and physical baselines. Retrospective performance does not guarantee real-time flood forecasting, and climate nonstationarity may erode accuracy.