---
title: "Working with Flow-Time boundaries | Tutorials"
slug: "working-with-flow-time-boundaries"
description: "Learn about working with Flow-Time boundaries in Flood Modeller."
tags: ["1D river modelling", "river section", "boundary conditions"]
updated: 2022-08-02T07:31:16Z
published: 2022-08-02T07:31:16Z
canonical: "help.floodmodeller.com/working-with-flow-time-boundaries"
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.

# Working with Flow-Time boundaries

After you  [Add a Flow-Time Boundary](/v1/docs/add-flow-time-boundary) to your river network, you can double-click the node to view the properties.

![1DRiverimagesworkingwithflowtime.PNG](https://cdn.document360.io/5074bc26-a9ef-4bf4-b1de-a5c6ce628aca/Images/Documentation/1DRiverimagesworkingwithflowtime.PNG)

The **Node Label** must be the same as one of your  **River Section** labels. This boundary will then be automatically connected to that **River Section** node.

A **Comment** can optionally be provided.

A checkbox is provided to  [Allow parameter overrides.](/v1/docs/how-to-allow-hydrology-parameter-overrides-to-a-river-network-at-simulation-runtime) This has no functionality alone, however if checked on, it enables the flow-time series provided to be overridden at simulation runtime if defined (e.g. if  [Using  Flow-Time Series Data](/v1/docs/how-to-use-flow-time-series-datafiles))

Your **flow-time series** must be provided. A table is provided to manually enter values, and you can also paste data into this table using Ctrl+V, or via the right-click menu provided.    

A **Plot** button below the table allows you to visualise the flow-time series entered.

Fields  to the left of the window specify the data manipulation methods, alongside the **Units of time**. Other options such as specifying a **Time Offset** or a **Minimum Flow Value** can also optionally be provided here.  

## Related topics
More about  [River Boundary Nodes](/v1/docs/river-boundaries-overview)