
Maharajah's Well - in the Chalk of the Chilterns
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Groundwater level hydrographs
The National Groundwater Level Archive
The National Groundwater Level Archive (NGLA) is maintained by the British Geological Survey at Wallingford and holds water level data for around 170 wells and boreholes throughout the United Kingdom.
- About the Data
- GWLA Data Retrieval Service
- Index Wells and Observation Boreholes
- Register of Selected Groundwater Observation Wells
- Ground Water Level Data and Hydrographs
The NGLA is a component of the comprehensive geological, hydrogeological and geophysical data holdings of the British Geological Survey; click here (external link) for further details.

