Spring Fed Pool Question

Grew up in NB and recently was in town visiting family. Went to the aquatics complex for the first time in like 20 years and was curious why big sections of the spring fed pool are roped off. Is this normal now?

https://preview.redd.it/6km8uj5o2pmd1.jpg?width=3024&format=pjpg&auto=webp&s=37c751a57c773fe19271effacea53692aa75048b