The Ink Pots are a group of springs in Banff National Park. The one feature that makes these springs of more than passing interest is the greenish milky appearance of two of the ponds in the group. This difference in appearance of the water cannot be explained by dissolved or suspended chemicals, or by algae growth. It can be explained by differences in flow velocity, which cause differential suspension of fine sand and silt. Temperature and chemical character of spring water from the Ink Pots indicate, respectively, shallow circulation and a relatively short 'contact' time.