Storage - Reservoirs
… Lakes, reservoirs, & structures, etc. are given a separate category in the discussion of the hydrologic cycle due to the potential impact on forecasting procedures and outcomes.
… provide a substantial storage mechanism and depending on the intended purpose of the structure will have varying impacts on the final hydrograph, as well as flooding levels.
… This effect can vary greatly depending on the type of reservoir, the outlet configuration, and the purpose of the reservoir.