Alternative devices for reservoir aeration are briefly reviewed. It is noted that each device is best suited for particular applications and objectives. It is recommended that care be taken by the designer to select the appropriate device for the particular application. Advantages and disadvantages of the various devices are given along with representative destratification and oxygenation efficiencies. Design considerations are discussed including techniques for sizing units, the effects of inflows and releases, the effects of reservoir stratification, evaluation of aeration impact on the reservoir temperature regime, and the possible development of nitrogen supersaturation.