1D Urban Solver

Simply model the urban drainage system and how it interacts with surface and river flows

The 1D urban solver allows users to combine surface and subsurface flow to obtain a detailed and integrated understanding of flood risk in urban areas, directly within Flood Modeller’s powerful user interface. It enables users to develop integrated catchment and system-based solutions within a single software solution.

Easily edit and visualise your drainage and pipe networks directly within Flood Modeller's user interface 

Use the fully integrated capabilities to model the river, urban drainage and surface water flood mechanisms across an entire catchment

Key facts

Create fully integrated catchment models by linking the 1D urban solver to the 1D river and 2D solvers

Benefit from the advanced features of Flood Modeller, including the extensive range of hydrological approaches, advanced structures, productivity tools and more

Build on your existing drainage models by importing them directly into Flood Modeller

Run your models using the Flood Cloud service

Use Flood Modeller's 1D river solver to model channels, or its 2D solver to model surface water flow, whilst linking to the 1D urban solver to model the interaction with and the impact on the drainage network.


The 1D urban solver excels at the modelling of sewer networks and other drainage systems. It is extremely powerful for modelling inflow and infiltration as well as combined sewer overflows, for evaluating the impact of extreme events on sewer systems.

Flood Modeller's 1D urban solver enables users to benefit from the trusted 1D river and 2D solver and its extensive range of hydrological approaches, large range of structures, and logical rules that can be used to define structure operation or failure.

​Where pipe networks overflow in the 1D urban solver, links to Flood Modeller's 1D river or 2D ADI solvers can be incorporated to model the resulting surface flows and possible flood scenarios for the area of interest. 

​When users have many models to run, they can utilise the Flood Modeller Batch Runner tool to setup a suite of simulations and leave the software to efficiently manage the running of all Flood Modeller models. ​

Users of the new 1D urban solver will be able to benefit from the GIS user interface and visualisation tools within Flood Modeller to quickly undertake their integrated modelling studies. They will also have the option of utilising the Flood Cloud service to run Flood Modeller models with the new 1D urban solver. Additionally, users will be able to benefit from the catalogue tool within Flood Modeller to organise and manage all data associated to a modelling project.​

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