[REQUEST] Add Ireland OPW

[thiagovmdon]

Data source
Office of Public Works (OPW), Ireland

Main website:
https://waterlevel.ie

Hydro-Data API documentation:
https://waterlevel.ie/hydro-data/#/html/API

Terms of use / license:
Please refer to the OPW waterlevel.ie website and Hydro-Data portal documentation.

Type of data portal
The portal provides API-style JSON access through the Hydro-Data service.

No HTML scraping is required for the RivRetrieve implementation.

Data is available through direct endpoint access for:

• station metadata
• yearly archive time series JSON

No registration is required for the endpoints used here.

Country/Countries/Regions
Ireland

Variables
The OPW portal exposes several products, but for RivRetrieve only the standard supported variables are needed:

• daily water level / stage
• daily discharge
• daily water temperature

Station list
A full station list is available directly from:
https://waterlevel.ie/hydro-data/data/internet/stations/stations.json

Useful metadata fields available there include:

• station_no
• station_name
• station_latitude
• station_longitude
• catchment_name
• WTO_OBJECT
• station_gauge_datum
• station_gauge_datum_unit
• CATCHMENT_SIZE

For the RivRetrieve implementation, station_no is used as the gauge ID.

Code snippets
Branch opened and pull requested.