The reduction in spring water feeding into Suizenji is an issue we’ve touch on before. Personally, this issue has made me wonder if a lack of water in Suizenji may not also be leading to a lack of water in Ezuko because, as a map image I’ll add in a comment shows, Suizenji feeds into Ezuko.
The answer to my question is “It depends who you ask.” The official answer is that the situation in Ezuko is basically unchanged: http://www.ezuko-park.com/blog/?p=13216
However, an unofficial blog offers visual evidence to the contrary: http://blog.goo.ne.jp/gangee0215/e/e88b48a648d357760ee4c8065a850d6b
I hope the official version is closer to the truth.
– KIrk
