Gases, mainly CO₂, CH4 and H₂S, accumulate due to biogenesis in deep water up to 485 m. Gas in solution after hundreds of years is trending closer to saturation, contributing to Lake Kivu's dangers. Lake saturation means the carrying capacity of dissolved gas is fully loaded. Any over-accumulation threatens an imminent limnic eruption. u003cbr/u003eThe dissolved gas volume is almost as large as the 500 cubic km of the lake itself. This will mostly release like a giant geyser in less than a day. In Lake Kivu's case this can be catastrophic to all life forms in the lake environment, where millions of people live today near the shores. u003cbr/u003eu003cimg alt=u0022Panoramic photo of Mt Nyiragongo from Lake Kivu during wet season showing steam plumeu0022 src=u0022https://hydragas.net/wp-content/uploads/2015/11/2003_1205_152157AA.jpgu0022/u003e