The Framework for Aquatic Biogeochemical Models (FABM): a Fortran 2003 programming framework for biogeochemical models of marine and freshwater systems.

Code for the AED water quality model

Source code for the General Ocean Turbulence Model

This R package is designed to obtain USGS or EPA water quality sample data, streamflow data, and metadata directly from web services.

A curated list of open source tools for water modeling used in engineering and science.