Climate change can affect the coastal agricultural areas through direct and indirect ways: directly through sea level rise, storm surges, floods, and droughts and indirectly through events such as river floods, pulses, and quality of runoff that originate off-site but whose consequences affect the coasts. Also, climate change may pose the greatest threat to agriculture by increasing the demand for water and available water supply, and significant degradation of water quality. Because climate change may result in significant alteration of natural water resources, as well as having negative consequences on various agricultural activities in shoreline space, its impacts must be understood and countered. The present chapter describes available water resources in the coastal regions and then discusses the effects of climate change on these resources.