Datasets contains depth profiles of temperature and salinity data extractions at 10 m depth intervals for the Western Channel Observatory long-term hydrographic series at station E1 (50 02'N; 4 22'W) in the western English Channel. The 10 m extractions have been determined from the closest depth bin measurement. They do not represent the average over a 10 m slab of the water column, but rather a slab around 0.25 m thick for the electronic measurements.