What flooring?

[Capto Veritas]

Is it positioned at the bottom of a hill, on a raised area so that it drains well?

It is positioned at the top of a hill with a drain in the middle of the coop (just got lucky)!

 

[Capto Veritas]

I think it is called something like the deep litter method?

 

[U_Stormcrow]

My coop(s) - both of them - are above sandy clay - or clayey sand, with the ground sloped away to encourage drainage. Doesn't take long for the poop to accumulate. I use leaf litter (free from my acres) to deep litter/slow compost. Same in the run.

In my raised coop (one of the two), I use the same - plus straw in the nesting boxes) as deep bedding - which eventually joins the deep litter on the floor, once a season or so.