Do you have an area with good flow?
Discussion
No and with natural pool you actually don’t want flow. They should be an isolated body of water (that includes isolated from the ground with a liner).
My dream is build one and then enclose it in a greenhouse so I have a climate controlled area that’s warm year round to swim in.
That’s interesting and awesome. Growing up we were fortunate enough with a well supplying spring into a pond, but cold AF in winter.