 The surface area of Devils Hole is about 22 m long by 3.5 m wide (72 ft long by 11.5 ft wide).Approximately deep on one end of Devils Hole is a small rock shelf of .The dissolved oxygen of the water is 2.5–3.0 ppm up to around in depth, though the shallow shelf can have dissolved oxygen levels as high as 6.0–7.0 ppm in June and July.