The data and its licences
Provenance, contents, and the attribution each licence requires
Not yet written. The structure below is settled; the prose is not. The one substantive task is confirming the exact attribution wording each licence requires.
What each table contains
Provenance and row counts. Enough for a reader to tell whether an example matches the table in front of her, and no more: this is a reference page, not a data dictionary.
Licences
Two, and they are different. The environmental agency data is OGL v3.0. The storm overflow locations are CC BY 4.0, not OGL. The difference has to survive into every page that describes the data.
If the river network data is used anywhere on the site, it carries a third set of attribution wording, different again from both, and needs its own credit line rather than sharing theirs.
The wording each licence requires, to be copied verbatim rather than paraphrased:
Contains public sector information licensed under the Open Government Licence v3.0. Source: Environment Agency hydrology data.
Storm overflow outfall locations © the water companies, licensed under CC BY 4.0 and published via Stream / Water UK’s National Storm Overflow Hub.
The first is the wording the Open Government Licence itself prescribes where the information provider specifies none, which is the case here: the Environment Agency’s hydrology pages point at the licence without adding an attribution statement of their own. The licence also asks that the source be acknowledged, which is what the second sentence does.
Nothing here is a finding about water
The data is a vehicle for demonstrating technique. No page on this site makes a substantive claim about water quality.
Worth keeping prominent. The reader is an environmental scientist and will read the examples with a domain eye, so the disclaimer stops her weighing a number that was chosen to make a technique visible rather than to be true.
Next
To use these tables, start at Connect your R session to the data. To cite them in a paper, see Get results out, and get the same answer next year.