ABSTRACT
The solubility of gases in water is often an important consideration in the management of lakes and reservoirs, both from a regulatory and an ecological perspective. Total dissolved gases (TDGs) may be important, particularly when they are in excess, resulting in gas bubble disease. Other dissolved gases commonly of interest include nitrogen, ammonia, oxygen, carbon dioxide, methane, and hydrogen sulfide. Dissolved oxygen (DO) is always a critical water quality parameter. In many lakes that have an anaerobic hypolimnion, methane, hydrogen sulfide, ammonia, and other gases may accumulate, creating problems associated with hypolimnetic releases.
