Waterfall Shower

Lost in the middle of a forest? Need to take a shower? Cue the convenient nearby waterfall. Excellent source of Fan Service. Often leads to Outdoor Bath Peeping... and there's good chance it's cold as hell.

In Real Life it's somewhat less practical, particularly for large waterfalls, since in most cases the water would be stone cold and would have enough force to knock you flat if you were to step under it.

Contrast Meditating Under a Waterfall, which has a different purpose. Compare Skinny Dipping.

Anime and Manga

 * Love Hina hits this up at least twice.
 * During the trip Sara and Naru take one only to have Keitaro fall in on them
 * Later lost on a desert island finding an Oasis Naru takes one while making a Leaf Bikini.
 * Negima while lost in the library (Yes, the Library has a waterfall. Many, in fact.)
 * And much later Asuna and Setsuna take one.
 * Chisame takes one and much to her chagrin Jack Rakan is also taking one on the other side of some rocks.
 * Yu-Gi-Oh's first season has this.
 * Berserk combines this with Shower of Angst with.
 * Genesis Climber Mospeada has Yellow Belmont doing this twice.
 * Kallen's true identity in Code Geass is exposed to Suzaku when he walks in on her doing this and she attempts to attack him.

Comics

 * Marvel Illustrated Swimsuit (which Marvel Comics published annually between 1991 and 1995) featured several illustrations of superheroines taking waterfall showers. Of course, if you're strong enough to toss tanks around, you can probably handle the force of the water.
 * Some publicity artwork for the French graphic novel Pyrenee shows the Wild Child heroine showering beneath waterfalls. Not intended as Fan Service, because she's too young...
 * In Strangers in Paradise, Freddy and Casey get married while standing naked under a waterfall... only to regret it when they realize how cold it is.
 * Abbey and Ash take one, to wash off zombie goo, in Danger Girl and the Army of Darkness #5.

Film

 * The heroine takes a waterfall shower occurs in the 1976 remake of King Kong, and in the animated musical adaptation The Mighty Kong.
 * Tanya Roberts took two in Sheena, which made the MPAA create the PG-13 rating.
 * Robin Hood does it in Robin Hood Prince of Thieves.
 * One of Phoebe Cates' two nude scenes ever was in one of these, in the otherwise unmemorable The Blue Lagoon rip-off, Paradise.
 * In the film The Last Samurai, Tom Cruise's POW character comes across his host (the widow of the man he killed) taking a waterfall Shower of Awkward.
 * After the raid on the drug dealer's compound, the Angels celebrate by taking one in Angels Revenge.
 * Eve showers naked under a waterfall in the 1984 sex comedy Second Time Lucky.
 * Happens in She-Wolves of Wasteland (a.k.a. Phoenix the Warrior).

Literature

 * Robert Heinlein's Glory Road. Oscar and Star bathe under several waterfalls in the area called the Singing Waters (so named for the sounds the water makes falling over them).

Live Action TV

 * Done frequently by the female contestants on I'm a Celebrity Get Me Out of Here.

Video Games

 * Follow the singing in Shadow Warrior to find a woman doing this. But don't stand too close for too long, or your character's pickup lines will lead her to whip out an Uzi.

Western Animation

 * Bugs Bunny in a Non-Fan Service example where he used a waterfall as a shower and was trying to stop a lumberjack from damming the river that provided it.

Reality

 * Artificial ones are a popular choice for many pools and resort locations.