# River Node

## General Description

The **river node** is a node in the river network, which may have multiple upstream nodes (i.e. a confluence) but only one downstream node. [API Reference](https://pywr.github.io/pywr-docs/master/api/generated/pywr.domains.river.River.html).

## Primary Attributes

<table><thead><tr><th width="181.33333333333331">Name</th><th width="342">Description</th><th>Required</th></tr></thead><tbody><tr><td>allocation penalty</td><td>The cost per unit flow via the node</td><td>Optional</td></tr><tr><td>max_flow</td><td>The maximum flow constraint on the node</td><td>Optional</td></tr><tr><td>min_flow</td><td>The minimum flow constraint on the node</td><td>Optional</td></tr></tbody></table>

## Examples

coming soon...