MHIA Model ("Modelo Hidrológico Agregado")

The MHIA model combines a soil water balance with two response branches (fast and slow), each routed using a Gamma-type instantaneous unit hydrograph (IUH). The objective is to represent, in a conceptually consistent and computationally efficient manner, the processes of storage, release, and flow propagation within a catchment. The formulation is designed to support gradient-based optimization, enabling its use within differentiable architectures or hybrid neural networks, while also allowing global optimization through Particle Swarm Optimization (PSO).