Flood Modeller

Flood Modeller is a computer program developed by Jacobs that simulates the flow of water through river channels, urban drainage networks and across floodplains using a range of one- and two-dimensional hydraulic solvers. The software incorporates a user interface for building, running and viewing the results of models, including a GIS map interface. 
Flood Modeller is the result of 40 years of development and application, it was previously known as ISIS software. Flood Modeller 4.0 was unveiled on 19 November 2014. The latest version, V5.0, was released in December 2020. 
Initially developed by Halcrow Group and then CH2M Hill, Flood Modeller is now Jacobs' next generation flood modelling software.
In February 2020, Jacobs unveiled the Standard edition of Flood Modeller which sits alongside the Professional edition of the software.
Integrated with Flood Modeller, Flood Cloud allows users to run their simulations in the cloud to get results fast. In addition to being compatible with Flood Modeller, Flood Cloud can also run HEC-RAS and TUFLOW simulations.
Solvers.
1D solvers.
Flood Modeller includes steady-state and unsteady 1D river solvers for modelling open-channels.
It also provides a 1D urban solver for modelling urban drainage systems. 
2D solvers.
Flood Modeller includes three different 2D solvers:
Flood Cloud.
Flood Cloud is an innovative service from Jacobs that enables users of Flood Modeller, TUFLOW and HEC-RAS to seamlessly undertake flood risk modelling, at any scale, in the cloud. Powered by the Parallel Works platform, Flood Cloud delivers the on demand computational resource required to deliver the step change needed for better information on flooding.