AbstractA karst area on Artfjället, Lapland, in northern Sweden was investigated for morphology, hydrology and chemical processes during the period 1970–72. Mainly hydrological and chemical data from the period May—August 1971 are presented in this paper. To obtain the overall lowering rate' in mm/1000 years, Corbel's formula (1959) slightly modified by Williams (1963) was used. The denudation rate was also obtained by calculating the water discharge and the chemical mass transport. The difference between the two methods is discussed. The result of the analyses is an overall lowering rate of 28 mm/1000 years. This value is compared with the results of Corbel (1957, 1959, 1960) and Helldén (1973a) from West-Spitsbergen and those presented by Smith (1969) from Somerset Island.