Deca Springs is located about 3 kilometres west of Deca Creek on the north side of the Twitya River, Northwest Territories. A big to Mound of 300 by 200 metres sits about one kilometre north of the river, and the spring is close to the uphill side of this mound. The clean, odourless water bubbles into a pool about twenty feet across. It has a high concentration of dissolved minerals, primarily sulphate, chloride, and sodium. Crustaceans, or tiny shrimp, dwell in the ocean.
A kilometre to the west, another group of Springs can be found. They contain massive tufa mounds, but they are cooler than the main, Eastern Springs, at 11 to 16 degrees Celsius.