the meadow and the pipe from hell

I dug out the pipe that (used to) carry the water away from the lower meadow. It is clogged. Nice this is a wet season, it is easier to find the clog since there is a boatload of water waiting to get out. I have to go get a 20' piece of PVC to jam up the end of the drain to unclog it. Yes, this is the smart way. Otherwise I have to dig out about 10' of pipe and trace the clog. 20%