Twenty year average (2080-2099) of projected changes in monthly precipitation and temperature under RCP4.5 and RCP8.5, relative to the average of 1950-1999.
Natural precipitation and runoff variability highly impact the availability of water. There is a spatial and temporal disparity between natural water supply and human demand. Construction of dams is a strategy to reduce this spatiotemporal inconsistency. The cumulative environmental and economic effects of dams remain largely unexplored at the regional and global scales as a result of the lack of reliable methods for simulating operation of dams. This pushes scientists to look into precipitation and local runoff values as measures for the availability of water, or to analyze annual river flows where impacts of dams are mostly negligible. In this work a general reservoir operation scheme is used to quantify the impacts of operation of more than 11000 dams on the hydrology of New England and the Northeastern United States. Climate change Impacts on water availability in the region, and also changes in the magnitude and timing of flow extremes have been compared to the contemporary conditions.