OpenDA 2.1 Release Notes. april 2013 This is a maintenance release containing bug fixes and enhancements. For an overview of the changes in version 2.1, see Change-log-2.1.txt. For installation instructions and the user manual, visit www.openda.org or view the 'doc' folder. New Features: A C# dotNet version of the OpenDA Java code is available in the folder 'dotnet_bridge'. Several new models have been added: - model_efdc - model_hspf - model_wflow