So the run is at the base of the hill?
Your choices are to make the water go somewhere else (like a ditch or drain system) or make your run higher. If you make your run higher with sand, the chickens can be on top of the dry sand and the water can be hidden by the sand where it eventually goes into the soil below or evaporates.
Your choices are to make the water go somewhere else (like a ditch or drain system) or make your run higher. If you make your run higher with sand, the chickens can be on top of the dry sand and the water can be hidden by the sand where it eventually goes into the soil below or evaporates.