Having reached out the the EPA, they established that the water level data feed that went to the OPW waterlevel.ie site had stopped working, and they were able to restore it.

Therefore, the data from the EPA sensor at Waldron’s Bridge is now flowing again to the OPW site, and I’m able to automatically grab the latest water level info, and the dodder.eu site is back in operation.

However, they don’t guarantee that this feed to the OPW site will continue long term, so I might need to look at another option.

I reached out to the OPW to ask about the sensor data, and asked if it could be restored. And they got back to me, saying that the sensor has now been taken over by the EPA, and that I can maybe reach out to them to get access to the data.

This is the EPA page for the Waldron’s Bridge sensor: https://epawebapp.epa.ie/hydronet/#09010

My problem is that they don’t provide an easily readable file of readings for that sensor. On the OPW site, I could download a text file with the latest 24 hours of readings, and pick out the latest reading. But on the EPA site, the smallest data set seems to be 3 months of readings, which is contained within a .zip file, which adds to the complexity of parsing it for the information required.

The waterlevel.ie sensor for Waldron’s Bridge (https://waterlevel.ie/0000009010/) has not updated with any data since 5th July 2024 – 20 days ago at the time of writing.

The data from this water sensor is used by this site to indicate whether the River Dodder stepping stones are flooded or not, and without the data the site won’t work correctly. That’s why it says that the status of the stepping stones is currently ‘Unknown’.

I have reached out the OPW to ask if the data feed can be restored, and will post again if I get an update from them.

Many thanks to Dave for emailing me to let me know about this problem.