---
title: "How to load  a  1D river simulation | Tutorials"
slug: "how-to-load-a-1d-river-simulation"
description: "Learn how to load a 1D river simulation in Flood Modeller."
tags: ["1D river modelling", "running simulations"]
updated: 2022-08-03T05:56:48Z
published: 2022-08-03T05:56:48Z
canonical: "help.floodmodeller.com/how-to-load-a-1d-river-simulation"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.floodmodeller.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to load  a  1D river simulation

A simulation is defined in a simulation file. For 1D river simulations this is a text file that has a file extension “.ief”.

The **Simulations** tab provides functionality to start new simulations and load existing simulations. You can also run simulations from here.

In the **Project** panel, click on the section header **Simulations** to highlight it. In the **Simulations** tab, click **Load Simulations**. You will be prompted to locate the simulation file in a standard browser window.

![1DRiverimagesloadsimulation.PNG](https://cdn.document360.io/5074bc26-a9ef-4bf4-b1de-a5c6ce628aca/Images/Documentation/1DRiverimagesloadsimulation.PNG?sv=2026-02-06&spr=https&st=2026-11-09T23%3A50%3A32Z&se=2026-11-10T00%3A50%3A32Z&sr=c&sp=r&sig=amoknxOz4E4UR%2BwHzViCQIaVG4ltHa0kZjI4NAQD7Uc%3D)

Note: You can also load simulations by right-clicking on the **Simulations** section of the **Project** panel and selecting **Add Item** from the displayed menu.

Your simulation name will be added to the **Simulations** section of the **Project** panel. You can right-click the simulation name for further options, including **Open** to view the simulation details.

![1DRiverimagesnewsimulation21.PNG](https://cdn.document360.io/5074bc26-a9ef-4bf4-b1de-a5c6ce628aca/Images/Documentation/1DRiverimagesnewsimulation21.PNG?sv=2026-02-06&spr=https&st=2026-11-09T23%3A50%3A32Z&se=2026-11-10T00%3A50%3A32Z&sr=c&sp=r&sig=amoknxOz4E4UR%2BwHzViCQIaVG4ltHa0kZjI4NAQD7Uc%3D)

## Related topics

More about [1D River Simulations](/v1/docs/1d-river-simulations)