There are 3 repositories under hydrologic-modeling topic.
WRF-Hydro model code
HydroShare is a collaborative website for better access to data and models in the hydrologic sciences.
Spatially Explicit Integrated Modeling System --- open-source, cross-platform, and high performance computation
Generates inputs for and runs the coupled groundwater-surface water model "GSFLOW"
Plugin for working with 3Di models in QGIS
it's a repository to develop proggrams of hydrology researchs,.
Modeling and visualizing hydrologic observations indexed in space and time. This work is heavily indebted to the piece from Wikle, Zammit-Mangion, and Cressie (2019) who are blazing the path to the summit for spatio-temporal statistics
Scripts used in the Estonian water quality modeling project