Derived operating rules for reservoirs in series or in parallel

This paper reviews a variety of derived single-purpose operating policies f or reservoirs in series and in parallel for water supply, flood control, hy dropower, water quality, and recreation. Such rules are useful for real-tim e operations, conducting reservoir simulation studies for real-time, season al, and long-term operations, and for understanding the workings of multire servoir systems. For reservoirs in series, several additional new policies are derived for special cases of optimal short-term operation for hydropowe r production and energy storage. For reservoirs in parallel, additional new special-case rules are derived for water quality, water supply, and hydrop ower production. New operating policies also are derived for reservoir recr eation.