A range of hydraulics data including stages and discharges were collected for the River and Leat at Boxford between 01/04/2008 and 30/09/2014. The River Lambourn is a tributary of the River Thames, the principal river in the south-east of England. The CEH River Lambourn Observatory comprises a 600 m reach of river and 24 acres of associated water meadows at Boxford, Berkshire. Data include: 1. River flow gauging using Electro-magnetic Current Meter (ECM); 2. Leat flow gauging using Electro-magnetic Current Meter (ECM); 3. River flow gauging using Acoustic Doppler Current Profiler (ADCP); 4. River stage boards readings (eleven Stage boards); 5. Leat stage boards readings (six Stage boards); 6. River stage at water quality station (WQS) using Druck PDCR 1830 Submersible Pressure Transducer; 7. River stage at four stilling wells using SWS Technology Mini-Diver® Non-Vented Level Sensors with a built-in internal data logger (four locations); 8. Time series river discharges at Boxford which are calculated from the relationship obtained between discharge measurements taken monthly at Boxford using ADCP and total river discharges at Shaw gauging station; 9. Time series of the Leat discharges which are calculated from the relationship obtained between discharge measurements taken mo Full details about this dataset can be found at https://doi.org/10.5285/4ed6f721-b23b-454e-b185-02ba54d551f0