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title: "Viewing and Managing Losses"
canonical: "https://docs.rubiconwater.com/space/NVNC/1990361307/Viewing%20and%20Managing%20Losses"
format: markdown
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> Macro (toc)

# Losses Tool

Use the **Losses** tool to change the loss value of a reach or pipe, and to view the history of loss values.

> ℹ️ **Note**
> ℹ️ 
> ℹ️ If you set a loss on a reach, it is helpful to give the reach a meaningful name. Reaches are not required to have a unique name, so it can be difficult to identify the correct reach in the Losses module if it does not have a name.

When a loss (other than zero) is set on a reach, the reach is displayed as a green line on the Planning Schematic.

# View Losses

- To view the losses for the whole network click **Losses **to open the Losses tool.
- To view the loss attribute value for a specific reach, right-click on the reach and choose **Details**.

# Change the loss of a reach:

1. In the **Losses** tool, select the loss that you want to change.
2. Click **Modify**
3. Enter the new **Loss value** and the **Date** when the value should take effect (this defaults to the present date and time).
4. Click **Save** to save your changes.

# View historical values for a loss:

1. In the Losses tool select the loss that you want to view.
2. Click **History** to display a list of historical loss values.

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