There are many different types of water hazard designs. The basics would include a man made lake or natural lake. Natural creeks are common to run through golf holes providing a challenge or force carry on par fours. Oceans may play part of a golf course water hazard like Pebble Beach’s eighteen, seventh, eighth, ninth and tenth holes. Made lakes are common and you may seen many placed in front of par 3’s to catch short golf shots. Water hazards like the lake on the sixteenth hole at Augusta National Golf Club is also used for skipping golf balls during practice rounds. Strategic design of a lake will help create the difficulty within a course. Many lakes I’ve seen on golf holes, have shaved sides so if a ball gets close to the edge it will just roll into it. This type of design makes golf holes very difficult, as it requires a risky shot to be taken.