So im pretty new to the swale farming technique. Were planning to do some major earth works on our farm for berry farming. We have some pretty treacherous landscape tho, rolling hills and erosion gulleys and flash flood creeks in low lying areas. We have alot of south, ssw,sse facing hillsides so they would be great for growing berries on. Were looking into doing some swales to store water for the berries that we plant on the he burms and also control the water that lands on our property to go where we want it to go, rather then eroding what ever is in its path. Since researching this as we clear the land i have done a small scale swale project in our backyard for some minor experience on how they work cuz i firmly believe in hands on experience. The swales in our back yard are maybe 2foot wide burm, 15-20ft long, and i put culverts in so they dont store so much they over flow.(i would say each swale when full to culvert "4in pvc" holds maybe 30-50gallons of water) So the run off from first swales goes down to second swale and so on. Total of 4 swales. And they have been erect since last fall so pretty solid burms now. But i have noticed down hill from them where we have moles digging around water flowing up out of ground threw their tunnels i assume. Anyone with longer term swales have experience with mole issues? Can they cause more erosion/land blowout? Or will the swales eventually drown them outta there holes and slowly backfill their tunnels in from the saturation of ground from stored water? And fyi i only see water coming outta the mole holes/tunnels when it rains alot and never when water is just being stored in swale. So i dont believe the moles have dug tunnels into my swale area, but they have been pretty darn close.