April 2025
This release note provides information about the April 2025 release of OS MasterMap Water Network Layer.
Feature counts
Feature Type
Count
WatercourseLink
4 733 541
HydroNode
4 752 874
Errors
Error Type
Count
Links with spikes
1
Single link loops
44
Multi-link circular flow loops that include River links
4
Multi-link circular flow loops on Drains
25
Product improvements
Details of live and resolved data issues for the OS MasterMap Water Layer product will be communicated on the OS MasterMap Water Network Layer Known Data Issues page. This page will provide details of their impacts and updates on the expected time frame for their resolution.
Next release
The next release of OS MasterMap Water Network Layer is scheduled for July 2025.
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