A hydrological monitoring station for Khumbu Glacier, Nepal, was established in a stable reach of the sole outflow channel at 4930 m a.s.l.. at approximately 27°56'02"N 86°48'44"E where meltwater breaches the lateral/terminal moraine ridge. Average water stage (S) was recorded at 30 min intervals using a Druck PDCR1730 pressure transducer and Campbell Scientific (CS) CR1000 data logger. Stage is given as DN. To derive discharge (Q), a stage-discharge rating curve was developed using 18 dilution experiments of 10% fluorescein and a Turner Designs Cyclops7 fluorometer linked to a CS CR10X datalogger. Rating curve observations covered the lowermost 50% of stage values recorded, and uncertainty in Q is estimated at 10-15%. The non-linear exponential stage-discharge relationship was given as: Q = 0.2839.e^(5.55397.S). Discharge is in m^3/s. Data extends from 14th May (DOY134) to 13th November (DOY317), and time is given as decimal-day format (DOY135.5 = 12:00 midday on DOY135).

Supplement to: Irvine-Fynn, Tristram D L; Porter, P R; Rowan, Ann V; Quincey, Duncan J; Gibson, Morgan J; Bridge, J W; Watson, C Scott; Hubbard, Alun L; Glasser, Neil F (2017): Supraglacial ponds regulate runoff from Himalayan debris-covered glaciers. Geophysical Research Letters, 44(23), 11894-11904