Search & download a specific model from the overall model list, or per category (see below for direct links). The lists will have links to each of the model descriptions, and some models you can directly run from the repository in the CMT.
Model: A Distributed Hydrological Model with Coupled Water and Energy Budgets
Rigon, Riccardo
HSPF
Model: Hydrological Simulation Program - FORTRAN is a comprehensive package for simulation of watershed hydrology and water quality for both conventional and toxic organic pollutants