This package contains data from 40 sampling sites, with 10 sites each on four streams on Canada Glacier. Stream 1 drains the southwest part of the glacier, stream 2 drains the southeast corner, stream 3 drains the northwest side of the ablation zone, and stream 4 drains the northeast side of the ablation zone. 

Samples were collected in triple DI-washed 500 ml polyethylene bottles. In some cases, an ice lid had to be chopped away with an ice axe to access liquid water. In cases where the stream was too narrow or shallow to fill the bottle, the bottle was filled using water scooped with the bottle cap. These conditions are indicated in the notes. After collection, samples were brought back to the field camp where water was distributed into a 20 ml glass scintillation vial, one triple DI-washed and one acid-washed 60 ml polyethylene bottle, and one acid-washed 125 ml bottle. The scintillation vial was stored at 4º C, all polyethylene bottles were frozen at -20º C, and all samples were shipped back to Boulder, Colorado for further analyses. One 60 ml bottle was thawed at 4º C in the Crary lab at McMurdo Station and analyzed by ion chromatography for Cl^-, SO₄^-, and NO₃^-. Atomic absorption spectroscopy was used to analyze samples for Ca²⁺, Na⁺, K⁺, Mg²⁺, and by Latchet for NH₄⁺ in the Arikaree Lab at the University of Colorado Boulder. Samples were analyzed for water isotopes using cavity ring-down spectroscopy on a Picarro in the Barnard Lab at the University of Colorado Boulder.

Contributing areas to each sampling point were calculated using a MD-Infinity flow routing algorithm on a sink-filled 1 m lidar-derived DEM.