What do you mean by channel Dave? The runoff itself has a ditch that runs along the driveway right in to the pond. It just seems like it is soaking in before it can make to the ditch. I thought about cutting more channels throughout the pasture directing to pond so it wouldn't have to run all the way to the ditch. It has always taken a good downpour before it would produce because it is flat and the top layer is pretty soft soil. But the rain we had the other day should have produced more runoff as it did before when we mowed it. I guess I just didn't expect to see such a difference between mowing it and having 3' tall grass there. The rabbits and everything else are doing great since I planted the bluestem but I might just have to go back to mowing.