There are many technologies can reduce water input in irrigation schemes but many other factors come between technologies and the problems that they can solve. (ricecrp.org)
This is hypothesized to result from fresh water input into the Northern Hemisphere (although it is worth noting that the transient simulations of this sort fix the magnitude of the freshwater perturbation, so this doesn't necessarily mean that the model has the correct sensitivity to freshwater input). (realclimate.org)
The reservoirs are interconnected in that they are placed along major waterways, with some downstream of others, and also because they can receive similar amounts of water input and can be subject to similar management decisions. (sciencedaily.com)