The source and/or technique used to create the WatercourseLink feature.
| Code | Description |
|---|---|
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:
OS-line or OS-area
localAuthoritySurveyed or nationalAuthoritySurveyed
localAuthorityInferred or nationalAuthorityInferred
inferred
OS-line-Urban
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.
See Topographic line and area features for more information.
OS-line-Rural
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.
See Topographic Line and Area features for more information.
OS-line-Moorland
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.
See Topographic Line and Area features for more information.
OS-area-Urban
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.
See Topographic Line and Area features for more information.
OS-area-Rural
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.
See Topographic Line and Area features for more information.
OS-area-Moorland
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.
See Topographic Line and Area features for more information.
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.