OD Level is in meters relative to the Malin Head datum.
You can view an image or download data using the Download button on the menu.
Only data for the past 1 day is shown.
Times are always shown in UTC (GMT).
To use the graph:
Zoom in: click and drag a horizontal or vertical box.
Zoom full: double click.
Smooth data: change roll period (text box bottom left of chart), from 1 to e.g. 24.
Graph by: Dygraphs
Use of this site is subject to the disclaimer on the Home page.
View historic data on Hydro-data website (new tab).