A variety of reservoir management projects are described in order to exemplifythe uniqueness of reservoir limnology, and cost-effectiveness of raw water quality improvement techniques. Case studies conducted since 1984 are used to illustrate the utility of depth-selective releases, reservoir sequencing and blending, reservoir partitioning-intake isolation, nutrient inactivation, biomanipulation, focused algaecide application, front-end treatment, and aeration strategies for water supply reservoirs. Includes figures.