---
title: "Structures & Features"
slug: "2d-structures-and-features"
description: "Read the into to 2D structures and features. "
tags: ["2D modelling"]
updated: 2023-06-21T13:07:46Z
published: 2023-06-21T13:07:46Z
canonical: "help.floodmodeller.com/2d-structures-and-features"
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 & Features

Once your 2D domains have been defined, additional structures and features may be required.

[Creating a z-mod feature](/v1/docs/how-to-create-a-z-mod-feature) enables you to modify the elevation of an area within your model. This can be used for specifying elevations for proposed defences, filling holes/areas of missing data in your underlying DTM, and much more. This method is more flexible than the traditional method to [Add topographic features](/v1/docs/how-to-create-a-2d-model-topographic-feature) to a model.

Flood Modeller also provides functionality to [Add a hydraulic structure](/v1/docs/how-to-define-an-embedded-structure-for-a-2d-model) (such as a culvert) directly into the 2D domain. [Results from embedded structures](/v1/docs/how-to-produce-a-plot-with-1d-embedded-structures) can then be viewed within custom time-series plots.