Same with our driveway. 2" of hard rain and the 1/3 mile road is a foot deep in running water below the hill. I have to get the tractor out to move the rock back onto the driveway and blade it off. We have 100 yards of a 10 degree grade uphill that is tough to maintain. Crusher run sets up pretty hard so that is what we use but the drainage culvert at the bottom of the hill plugs up with sediment and leafs requiring a lot of front loader work clearing the debris after a hard rain.You should see the gravel road 1 mile from my ranch....the road drops off steeply into the Canadian River Valley and the road turns into a raging river anytime we get over 2" of rain (if it comes quickly)....only 4 wheel drive trucks can navigate it. I just spoke with my neighbor on the ranch next to mine and his wife's car is sitting at the top of the ridge....he has to take his truck to pick her up....this lasts for days until the county makes it out to work on the road....my neighbor and I have both taken our tractors and my bull dozer to fix it in the past.....we just got 5.5" of rain so its pretty bad now...I'm going down Thursday to help