- General - definitions of the quality flags
- General - how often is the Hydrometric data updated?
- General - what is the difference between checked and unchecked data?
- General - how can I download the data?
- General - how accurate is the data?
- General - what is sub-daily data?
- General - what is a water day?
- General - is all the Hydrological data recorded in Greenwich Mean Time (GMT)?
- General - I have an abstraction licence. Can I use this information?
- Rivers - why is Real-Time Flow data only available for a small number of stations?
- Rivers - there are differences between the data available on the Environment Agency’s website and the National River Flow Archive, which time series should I use?
- Rivers - why do river levels or flow sometimes increase or decrease unexpectedly?
- Rivers - what is the difference between river level and river flow?
- Rivers - is river flow always a function of river level?
- Rivers - why is 15 minute (instantaneous) flow data only available for a small number of stations?
- Groundwater - why are there sometimes differences between dipped and groundwater telemetered data at the same site?
- Groundwater - what is borehole depth?
- Groundwater - what does MAOD mean?
- Groundwater - what is the difference between dipped, logged and telemetered data?
- Water Quality - why do the Water Quality sites record different variables?
- Water Quality - how are the Water Quality sites selected?
- Water Quality - how is the data different to the Water Quality Archive data?
- Water Quality - what Water Quality Data is available?
- Water Quality - how often do we take readings?
- Water Quality - why are some sites closed?
Water Quality - why do the Water Quality sites record different variables?
Created: 30 March 2023 Updated: 30 March 2023
Different parameters will be selected at different sites depending on the investigation that is taking place, the location of the site, the type of waterbody that is being investigated, the time of year, and various other factors.