I've described a big watersports lake resort community we are building here.

We have abundant water access from the river to keep these lakes at specified depth without any pumping, even if there was significant seepage. I'm trying to balance a desire for clean/clear water with a desire for warm water. If the flow of water through the lakes is slow, it will be nice and warm, but prone to algae and other growth. If we run water through fast, there won't be algae, but the residents will have to suffer with frigid water temps.

I would love some insight into how much flow I should send through the lakes and other techniques for maintaining clear yet warmer water.