# 集水节点

## 一般描述

这个 **集水节点** 是另一种具有固定流入量的输入节点。集水节点通常用于表示流入系统的河流或其他类型的流入。在它们上定义的任何流量都必须流入系统。

流入时间序列（例如 Pywr 数据框）通常定义在 *流* 属性表示集水流入量，但也可以使用其他参数（例如常量、月度概况等...）。

[API 参考资料](https://pywr.github.io/pywr-docs/master/api/generated/pywr.domains.river.Catchment.html)。

## 主要属性

<table><thead><tr><th width="180.33333333333331">姓名</th><th width="318">描述</th><th>必填项</th></tr></thead><tbody><tr><td>流</td><td>集水节点在每个时间步提供的水量</td><td>必填项，如果未输入，则默认为 0。</td></tr></tbody></table>

## 例子

即将推出...


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://water-strategy.gitbook.io/waterstrategy/zhong-guo-ren/jian-mo-ji-chu-zhi-shi/node-types/water-input/catchment-node.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.