If you were here during the 2016 quakes, you probably became aware of the sad depletion of the spring water in Suizenji Jojuen. Thankfully, things seem to be back to normal now. This article describes research about what happened.
-- Kirk
Groundwater Drawn Downward After Kumamoto Quake - Eos
A unique set of high-frequency groundwater level monitoring reveals a loss of approximately ten million cubic meters of groundwater after a major earthquake.