http://www.angelfire.com/extreme4/kiddofspeed/maydan/updateapril27.html
Google mapping shows most of the water to Crimea would have to come from two channels: E105 (already looks dry on Google - exact image date unknown) and E97 (still has water in it as of whenever the sat photo was taken.)
Maybe some Freeper has access to more recent images?
The Crimeans should pray for rain.
According to the news articles the channels are closed part of the year in the Winter, so they would be expected to be dry during the routine seasonal closures. We also don’t know whether or not the water was flowing at a rate that was low enough to result in sections of the channel going dry in the higher elevatons until enough of the water accumulated in the lower elevations to spill over the tops of the higher elevations. In other words, just because sections of the channel are dry at a particular time does not necessarily indicate the flow of water from the source has been altogether shut off.