Without a gutter, water pours off the "valley" where two roofs join. If you don't have guttering there, consider a corner leaderhead to catch the water and direct it onto a rain chain. A beautiful way to solve a common drainage problem!
Crafted in pure, thick copper, leaderheads come with the following features; removable brass screen in the top to let water in and keep debris out, an outlet and bolt with nuts to easily hang a rain chain, four (two per side) keyhole-style holes for easy installation and 4 copper screws. All leaderheads or made of pure, thick copper and ship for free.