Wow! That is a great project, and not off topic at all as far as I'm concerned! I think a cisten like that has great potential for the water conservation minded!

Thanks for posting, Jo!

No, it's quite interesting.

I hope that don't mind me tagging this link on; something that I'd bookmarked. Other goodies on this site if you dig around.

Here is a link that might be useful: more water tank stuff

My best friend commented recently, as I salivated over a BobCat, that my desires diametrically opposed to most women's desires (power tools vs shoes, yards of rock vs purses.) I had to laugh, because it's true. I'm more excited by the Harbor Freight catalog than clothing catalogs these days.

StrawDog, that was a very interesting site. I bit too ambitious for my needs, but it had lots of good information.

My only addition to the design I posted would be a cover of some sort to keep the mosquito population down.

Jo

There is a good little book about building water tanks: Ferrocement Water Tanks & Their Construction by Simon B. Watt. They are well within the capabilities of lots of people. Esp here.

Sue

Neat.Beautiful and useful from a conservation standpoint.