> For the complete documentation index, see [llms.txt](https://water-strategy.gitbook.io/waterstrategy/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://water-strategy.gitbook.io/waterstrategy/tutorials/creating-and-running-a-simple-model/creating-and-running-a-model/creating-a-new-scenario.md).

# Creating a New Scenario

Please watch the video for additional detail.

{% embed url="<https://www.youtube.com/watch?v=Eknj7-lOYEE#t=5m29s>" %}

### Create new scenario and compare with Baseline

Scenarios allow users to explore and evaluate different conditions or management strategies within the water system model.&#x20;

1\. To create a new scenario, click on the **Clone a scenario** icon. (To 'clone' is to 'make a copy of').

<figure><img src="/files/QvPG7C7zFEspRGKRRsxd" alt=""><figcaption></figcaption></figure>

&#x20;choose **Baseline** as the scenario to clone, add a name to your scenario, in this case 'With abstraction', and click **Clone**.

<figure><img src="/files/98vIScSrfTsNeaiqTwlL" alt=""><figcaption></figcaption></figure>

You will see the new scenario is automatically made active.

<figure><img src="/files/jF4JO5vl5w3mFg0ybIgN" alt=""><figcaption></figcaption></figure>

At the moment, the new scenario is an exact clone of the **baseline** scenario.

In this scenario, we will assign a demand to the demand node. Change the max\_flow of the demand output node to 5.0 Mm3/day

<figure><img src="/files/p4oPH4BXNKMMwf1aPCBK" alt=""><figcaption></figcaption></figure>

**Run** the new scenario and then view the **simulated\_flow** of the demand node.

<figure><img src="/files/Bkt0F4s4vXLW0fa1UoC0" alt=""><figcaption></figcaption></figure>

Now, the amount of water supplied to the demand node is no longer 0. The demand node attempts to abstract 5.0 Mm3/day of water. However, when there is not enough water in the river the full 5.0 Mm3/day cannot be abstracted.

Lets view the simulated\_flow of the river output node.

<figure><img src="/files/KxrCLLLVWHf6ETv0gd1C" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/ZosF87VWep1nk9XMe041" alt=""><figcaption></figcaption></figure>

Lets compare the river outflow in both scenarios.

Add the baseline scenario to the view by selecting it in the menu and then pressing the Play  ![](/files/YAQTE1s985CDqQto75LZ)button.

<figure><img src="/files/oNCJrSkaBzKLdBCnQB7R" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/03tuO8VQLO0etWj6sEDz" alt=""><figcaption></figcaption></figure>

We can see that the less water reaches the river outlet in the **With abstraction** scenario and sometimes there is no water flowing into the river outlet.


---

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