This place sounds like very many quarries in our state that sometimes don't make the best bass fisheries as far as growth size is concerned.
A lot of these quarries can be compared to oligotrophic lakes. And the other hand, our Illinois quarries aren't as deep as natural oligotrophic lakes, with that comes lack of oxygen. Sometimes the quarries are too sterile. With that comes the lack of forage all the way down to the tiniest plankton. The water table and expense of keeping some of these quarries dry for operation limits them anywhere from 20-40ft in most cases with a few exceptions. Seems like every quarry along the north Des Plaines is 20-25ft deep, the 7 quarries I have maped with sonar all have that depth. Independence grove being an exception.
A lot of times a more shallow, muddier, and more weedy lake produces the largest fish. Mesotrophic often makes the best fishing lakes. I know that goes against the weekend fisherman's thought process of 'deeper water means larger fish'.
There are IDNR reports on our Illinois lakes that detail their trophic states coupled with creel surveys and other findings.
Sorry for getting a nerdy.
Nature and shit.