permaculture

["paul wheaton" <paul@richsoil.com>]

> They must all be on a slight downhill grade so every terrace feeds the one 
> below
> to provide overflow drainage during heavy rainfall but are dammed enough to 
> prevent
> flooding and complete draining.

Since they are small, I would think that each "pool" is level, but
each has one cutout to handle out flow.

I wonder what might be the highest runoff - and what they do to
prevent erosion at that point (a common problem with ponds)

> Here's a good pic of a large terraced region with forests along the slopes
> (probably there because some terraces washed away opening up areas for
> random tree seedlings to take root).
>
> With all due credit to the photographer owning the PBase gallery this came 
> from
> (which I cannot locate to provide the true URL to the pic).
>
> http://www.ibiblio.org/ecolandtech/pbasephotos/32063358.RicePaddiesSurroundingGitDublingcopy.jpg

The link didn't work for me.  ????