> 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/add-data-to-the-nodes.md).

# Add Data to the Nodes

Please use the data in the online Excel table below for this tutorial.

<https://docs.google.com/spreadsheets/d/1J_wU_-U_ZlOLdbmg7rgW1HMt14JfHQHS/edit?usp=sharing&ouid=103412600775811717846&rtpof=true&sd=true>&#x20;

Please watch this video for more detail.

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

We want to include **time series** for the flow in the catchment node and **scalar** values for Demand.

1. Double click on demand and update the attributes in the Inputs section as shown below:

Max\_flow = 0

Allocation penalty = 0

You may need to click on the edit ![](/files/0pN41bl5RoYq08SsuRZm) button to change the values.

![](/files/trJ7sDJQuUZrh8PE0uvF)

1. Double click on catchment node, on the right panel inside Inputs section, on **flow** attribute click on the edit button ![](/files/ZS84SZL0tQIz1YXRXsD8).

![](/files/gRUSvdyBKCwXd0UjpdNe)

new window will appear, Click **Options**, select **PYWR\_DATAFRAME** and click **Save**

![](/files/b2Z4wO9WF8UdxKCiz0mJ)

1. The window will update to the Dataframe tab. Copy the data from the Excel file using the link above and paste it as shown in the image. Note that 2 columns must be used, column A for the date-time index and column B for the data values. Click **Save. For more detail please watch the video.**

<figure><img src="/files/KxZRMQV6F3oTaKkfqGhY" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/d1dphobRd2DM7O2ArGfx" alt=""><figcaption></figcaption></figure>


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