We have a well. But the water has lots of minerals. Also where I live, TX Hill Country we've been in a drought the last 3 years.
We have had a pretty wet winter and they say the drought will break this spring. Still I pump water out of a major nearby creek for the crocs. A lot of wells in our area collapsed this summer and they didn't have crocs.
On top of that, unlike Chris, we live on one big rock, so there is no earthen ponds. Everything is concrete or native stone.
And we get much colder. We were in the twenties about 20 times last year. I have to heat the water. Anything below 50 I feel is life threatening.I agree Niles can take the cold better than most other crocs. It seems like the Madagascar Niles are the most cold tolerant. Unfortunately I know first hand how uncoldtolerant Americans are.
My friend says Arthur Jones heated the huge pools for his Niles with pipes embedded in the concrete. Pumping hot water through the pipes kept the pools warm.
I'm jealous of earthen ponds in fact most of my pools are above ground. However the concrete DOES suck up the sun helping to heat the pools.
I've never figured out how to post pics. My pools are simple; A concrete slab, walls of cinder blocks. Inside and out I coat it with mortar. I have ledges on the ends and then some land area.
D.C.

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