Provides hydrometric data as well as our telemetered water quality data

• 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 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 - Is river flow always a function of river level?
• Rivers - What is the difference between river level and river flow?
• Rivers - Why is 15 minute (instantaneous) flow data only available for a small number of stations?
• Groundwater - Why are there sometime 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 (WIMS) 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 - How accurate is the data?
• Water Quality - How do I analyse the data?