What you are talking about is do-able, but it would help to know where you live so you can be given advice on species appropriate to your area, and possible sources. The main issue for you will be how much maintenance you expect. The fastest growing/spreading bamboos are the running kind, and you will ultimately have to deal with keeping them contained with either in-ground barrier, or manual rhizome pruning on an annual basis. On the other hand, if you go with clumping bamboo, you will not need to worry about unwanted spreading to other areas of the yard, but you will need to buy more plants upfront, and it could be pricey for a 60' stretch.

In your Zone there are species that will keep their foliage year-round and the only leaf issue will be a modest amount of turnover as new leaves replace some of the old.

Sorry, I'm in the Memphis, TN area. I'd really prefer to not have to do a lot of maintenance if I can keep from it.

So the clumping type doesn't spread very much? Sort of like a tree, where the only new plants are from seeds, not expansion?

For long screens like 60ft, an aggressive running type would be able to fill it in within 3-4 years only with 1 plant since rhizomes can run like crazy when they're traveling along a rhizome barrier and well fertilized, but it is a pain to put down such a huge rhizome barrier since a 60ft circle is almost like a week of digging. You could also just rhizome prune annually, but 60ft might still take a couple hours to go around the whole thing.

You might want one of the fargesia or chusquea clumping species for this purpose and plant them about 6ft apart. You could even have multiple plantings since their canopies will fan out to fill in the gaps. Clumpers will grow a lot less aggressive than running types and be easier to maintain since new shoots will only appear a few inches a way each year as opposed to several feet. Bamboos also rarely ever go to seed.

The clumping type simply gets a little larger in diameter at the base each year; the running type, once established (usually about 3 years) can send out rhizomes anywhere from 1'-10' in a year and new culms will arise from these.

All the horror stories you hear about bamboo taking over yards are typically from people who planted it, never mainntained it for 5-10 years, and then gripe about the characteristics of the plant.

As far as seeds, bamboo hardly ever sets seed, so you do not need to worry about small plants springing up from seed with either clumpers or runners.

Unless you enjoy often skimming the pool, bamboo might not be your cleanest choice.

When planting next to any pool that has a filtration system the first consideration is what will not clog the intake. Basically this boils down to choosing kinds with parts too large to get sucked in easily.

The OP says the plants will be 15-20 feet from the pool. I don't see fallen leaves as an issue unless there are strong winds all the time...

New liner in 2018. Bamboo rom over 10 feet away apparently sent out runners and came up in the middle of my pool. So my pool person said not to cover the pool for the winter as it might damage it further. Now it’s a beautiful dark green and I don’t know what to do!