Mimicry of a Conceptual Hydrological Model (HBV): What's in a Name?

Models that mimic an original model might have a different structure than the model, affects output. This study assesses differences and their impact on output by comparing 7 implementations carry name HBV. We explain quantify with individual components at both numerical (e.g., explicit/implicit scheme) mathematical level lineair/power outflow). It was found none of formulations mimicking models were (originally) same as benchmark, HBV-light. led to small but distinct in simulated streamflow for (KGE difference up 0.15), major due median loss 0.27). These decreased after calibrating benchmark model. argue lack systematic naming has diverging concept HBV-model, diminishing mimicry. Development framework, open accessible code more elaborate descriptions are suggested enhance mimicry development.