Squeeky, Sure it can be done if the watershed is appropriate. But, I've seen dry creekbeds go 15 feet deep with a 3-4 inch downpour. If you haven't done this already, get an experienced dozer operator to check topographical maps for your watershed and build accordingly...the last thing you want is a washout. If the water doesn't run over the road, and you match the pipes, you should be fine.