# WatercourseProvenanceValue

## **Code list: WatercourseProvenanceValue**

The source and/or technique used to create the WatercourseLink feature.

| Code                      | Description                                                                                                                                                                                                                                                                           |
| ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| OS-line-Urban             | <p>The WatercourseLink is based upon Topographic line features representing watercourses within Ordnance Survey basic scale data, where the line feature was originally captured to an accuracy of 0.5 m RMSE.</p><p>See Topographic line and area features for more information.</p> |
| OS-line-Rural             | <p>The WatercourseLink is based upon Topographic line features representing watercourses within Ordnance Survey basic scale data, where the line feature was originally captured to an accuracy of 1.1 m RMSE.</p><p>See Topographic Line and Area features for more information.</p> |
| OS-line-Moorland          | <p>The WatercourseLink is based upon Topographic line features representing watercourses within Ordnance Survey basic scale data, where the line feature was originally captured to an accuracy of 4.1 m RMSE.</p><p>See Topographic Line and Area features for more information.</p> |
| OS-area-Urban             | <p>The WatercourseLink is based upon Topographic area features representing watercourses within Ordnance Survey basic scale data, where the area feature was originally captured to an accuracy of 0.5 m RMSE.</p><p>See Topographic Line and Area features for more information.</p> |
| OS-area-Rural             | <p>The WatercourseLink is based upon Topographic area features representing watercourses within Ordnance Survey basic scale data, where the area feature was originally captured to an accuracy of 1.1 m RMSE.</p><p>See Topographic Line and Area features for more information.</p> |
| OS-area-Moorland          | <p>The WatercourseLink is based upon Topographic area features representing watercourses within Ordnance Survey basic scale data, where the area feature was originally captured to an accuracy of 4.1 m RMSE.</p><p>See Topographic Line and Area features for more information.</p> |
| inferred                  | A WatercourseLink where the alignment has been added by deduction from existing Ordnance Survey Topographic features or terrain data to provide an indicative connection between other WatercourseLink features.                                                                      |
| localAuthorityInferred    | A WatercourseLink provided by a local authority that has not been measured or otherwise confirmed on the ground, but which has been added to provide an indicative connection between other WatercourseLink features.                                                                 |
| localAuthoritySurveyed    | A WatercourseLink provided by a local authority that has been measured or otherwise confirmed on the ground.                                                                                                                                                                          |
| nationalAuthorityInferred | A WatercourseLink provided by an accepted national authority that has not been measured or otherwise confirmed on the ground, but which has been added to provide an indicative connection between other WatercourseLink features.                                                    |
| nationalAuthoritySurveyed | A WatercourseLink provided by an accepted national authority that has been measured or otherwise confirmed on the ground.                                                                                                                                                             |

A feature may have been obtained from more than one source; where this is the case, the following priority order is used to assign the provenance value:

1. OS-line or OS-area
2. localAuthoritySurveyed or nationalAuthoritySurveyed
3. localAuthorityInferred or nationalAuthorityInferred
4. inferred


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