> For the complete documentation index, see [llms.txt](https://docs.os.uk/osngd/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/osngd/code-lists/code-lists-overview/waterlinkflowdirectionvalue.md).

# waterlinkflowdirectionvalue

This code list is used in association with the Flow Direction attribute which is present within the Water Link Feature Type*.* The code list describes the direction of water flow in the segment relative to digitisation of segment geometry.

| Label        | Definition                                                                                                                                                                                                                                                                                                                                                                                 |
| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| In Direction | The watercourse has a definite flow. This is applied to all features with directed flow. This flow is always assumed in direction of digitising.                                                                                                                                                                                                                                           |
| Unknown      | <p>The flow direction has not been determined for one of the following reasons:</p><ul><li>The flow direction has not been collected or cannot be ascertained by the capture method selected.</li><li>The watercourse should normally have a flow but the direction cannot be measured.</li><li>The watercourse may have a flow but OS is not currently recording the direction.</li></ul> |


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