Chemical parameters of Lake Bonney were closely monitored. Results were at variance with reports of several previous investigators. Inorganic nitrogen was found to be present in high concentration particularly in the monimolimnion were ordinarily less than 10 micrograms/1 throughout the study. Water samples were analyzed for the presence of copper, cobalt, iron, manganese, molybdenum, and nickel. More than 90 percent of the mass of each trace metal was found to be in the monimolimnion. Continuous monitoring of one meltstream showed flows to be highly variable. There is evidence of intermittent subterranean flow at some depth.