When I was renting a space on a piece of property for my coop, (I lived in the city and couldn't have chickens. The property I put the coop on, had horses, and was zoned for chickens too) after the first summer there, the land had low spots, and stayed covered in water in a lot of areas. The coop was a muddy mess a lot of the time. The second summer, when we expanded a little, the first thing I did was have a huge dump truck load of sand brought in to elevate my coop/run and keep it high and dry.
When we bought this place, the area I chose for my coops/runs was higher up, but I thought it needed more drainage. I had learned my lesson the hard way with the other coop about not having good drainage. I had 2 huge truck loads of sand delivered. One of my neighbors brought his tractor, and put the sand in the coops/runs for me. I elevated it a little over a foot in good, clean, granite sand. Then I had a load of fill dirt brought in, and put on top of the sand. I may have to walk through water puddles, or mud to get to my chickens, but they are high, and dry. No mud, no standing water.
When we bought this place, the area I chose for my coops/runs was higher up, but I thought it needed more drainage. I had learned my lesson the hard way with the other coop about not having good drainage. I had 2 huge truck loads of sand delivered. One of my neighbors brought his tractor, and put the sand in the coops/runs for me. I elevated it a little over a foot in good, clean, granite sand. Then I had a load of fill dirt brought in, and put on top of the sand. I may have to walk through water puddles, or mud to get to my chickens, but they are high, and dry. No mud, no standing water.