Kirk here with an article I recommend highly. Here’s a blurb to give you a sense of the piece:

— start quote — Twenty years ago, Teruyuki Otaguro, a lifelong Kumamoto resident, saw something “surreal” at Lake Ezu, a popular spot for locals to fish and boat. As he walked around the lake, he saw hundreds of carp trying to squeeze through a narrow waterway, some swimming on top of each other, as they tried to get out of the lake. It was hot, and rain hadn’t fallen in days. “The image stuck with me for a long time,” Otaguro told Nikkei Asia. The main source of the lake, water gushing from underground, had been significantly declining since the 1970s. The fish appeared to be attempting to escape the evaporating lake into connecting rivers. — end quote —

Water pressure: TSMC, others tackle groundwater worries in Kumamoto Farmers look to partnerships with companies to protect vital resource https://asia.nikkei.com/Business/Technology/Water-pressure-TSMC-others-tackle-groundwater-worries-in-Kumamoto