---
title: "Structures Data Data Fields | Definitions"
slug: "structures-data-data-fields"
description: "Learn the data inputs and appropriate datafile format for structures data fields in the water quality solver. "
tags: ["1D river modelling"]
updated: 2022-11-01T16:28:30Z
published: 2022-11-01T16:28:30Z
canonical: "help.floodmodeller.com/structures-data-data-fields"
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.

# Structures Data Data Fields

## Data Input

In order to input the required information for this pollutant into the Water Quality model, the user needs to open the .con file in a Text Editor and type in the information in the format mentioned in the section below.

## Datafile Format

Line 1 STRUCTURE Line 2 ndat Line 3 label, constc

Where:

| Field | Description |
| --- | --- |
| STRUCTURE | Keyword |
| ndat | Number of structures specified in STRUCTURE module |
| label | Node label at structure |
| constc | Additional reaeration parameter k |

---

Overview

[Structures Data](/v1/docs/structures-data)