[[caption-width-right:350:Any second now...]]
->''"Cool 'er off, sucker!"''
-->-- '''Any of the [[Franchise/TeenageMutantNinjaTurtles Turtles]]''', ''[[VideoGame/TeenageMutantNinjaTurtlesTurtlesInTime Turtles in Time]]''

In media when an out of control car runs over a fire hydrant the inevitable result is a geyser of water that [[InstantIndexJustAddWater instantly adds]] both drama and excitement to the scene. In reality the ''most'' likely result is a good deal of front end damage and a bill to repair the broken hydrant, but in a non-trivial amount of cases the car '''will''' wind up as an aquarium. What determines if this trope is ArtisticLicense or TruthInTelevision is the [[http://en.wikipedia.org/wiki/Fire_Hydrant#Construction design of the hydrant]]. Hydrants known as "wet barrel" bring highly pressurized water all the way up into the part that [[TemptingFate sticks above ground]]. Hydrants known as "dry barrel" keep the vital valve equipment many feet underground, which are then opened via a long shaft.

Any location subject to cold temperatures '''must''' employ dry barrel hydrants to [[HarmlessFreezing avoid problems with burst pipes]]. This combined with the protection against the very calamity that the Hydrant Geyser portrays is why dry barrel hydrants make up the overwhelming majority of installed units in North America. Of course with wet barrel units being acceptable in warm locations such as Southern California, that design makes up the [[CaliforniaDoubling majority seen in media]], hence the popularity of the trope.

This trope is constantly hovering on the border of becoming [[DiscreditedTrope discredited]] or even a [[DeadHorseTrope dead horse]] with spoofs and parodies making up a large number of examples, however it is frequently played straight both in media and RealLife. Like the [[EveryCarIsAPinto exploding car]], this trope maintains a strong grip on the popular psyche causing people to be [[RealityIsUnrealistic genuinely surprised]] when hydrants are knocked over with little fanfare.

The presence of a Hydrant Geyser can always be HandWaved away by saying that any given dry barrel unit was accidentally left pressurized via an open valve.

Often the geyser is preceded by a comical rumbling of the ground as if Hydrant acted as some sort of champagne cork or oil well. This is always wrong as a pressurized hydrant will instantly gush water, not take a few seconds to "get going".

Similar to TelepathicSprinklers. See also WaterGeyserVolley


* In ''Film/TheBluesBrothers'' a geyser is seen to erupt after the police car collides with The Good Old Boys Winnebago after the Blues Brothers flee the Country Bunker.
* In ''Film/SupermanIII'' the action opens with an out of control car knocking over a hydrant, which proceeds to fill the passenger compartment with water and threaten to drown the person [[JammedSeatbelts trapped inside]].
* In ''Film/RoboCop1987'', when the Boddicker gang are playing around with their [[MoreDakka Cobra Assault Cannons]], one blows the top off a fire hydrant causing a geyser.
* In ''Film/BruceAlmighty'', Bruce uses his God powers to knock a hydrant over, allowing some kids to play in the resulting geyser.
* Towards the end of ''Film/LethalWeapon'', when the cops are shot in front of Murtaugh's house their car rolls into a hydrant that creates the geyser that then creates the mood for the ultimate fight scene.

[[AC:Live-Action TV]]
* In an Episode of ''Series/CSIMiami''' a hydrant geyser threatens to wash away critical evidence after a motorist was shot (thus causing the geyser).

* The former Ride/{{Kongfrontation}} attraction at Ride/UniversalStudios had a broken fire hydrant shooting off water down in the streets, to show off the damage King Kong had done there.
* A fire hydrant also gets broken and shoots water during the WesternAnimation/HeyArnold sequence in [[Ride/JimmyNeutronsNicktoonBlast Jimmy Neutron's Nicktoon Blast]], a water effect would then be used to make the riders feel as if they're getting sprinkled by it.

* Both ''VideoGame/TeenageMutantNinjaTurtlesTheArcadeGame'' and ''VideoGame/TeenageMutantNinjaTurtlesTurtlesInTime'' allow you to send water flying out of a hydrant, damaging any enemies in its path.
* Several ''Franchise/GrandTheftAuto'' games will do this if you hit a hydrant at any significant speed. Like fire engines and police water cannon, the water has a knockdown effect on anybody it hits.
* In ''VideoGame/ResidentEvil3Nemesis'', Jill passes by a busted hydrant on her way to the police department. By the time she comes back (a few minutes in real time, but several hours in-game) the hydrant has run out of pressure and the there is no more geyser.

* In ''Webcomic/{{Spinnerette}}'', Captain Alberta uses his water control powers to [[http://www.spinnyverse.com/2013/04/15/04152013/ pop a hydrant]] and use the water within as a weapon.

[[AC:Western Animation]]
* Parodied in ''WesternAnimation/TheSimpsons'' episode ''22 Short Films About Springfield'' Chief Wiggum, on foot, recognizes Snake at the wheel of his car at a light and in the ensuing attempt to flee Snake crashes into a mailbox which results in a geyser of letters spewing forth from the ground.
* This was a RunningGag in the ''WesternAnimation/RockosModernLife'' episode in which Rocko teaches Mrs. Wolff how to drive; she would keep running into hydrants, which fill the car with water.
* In ''WesternAnimation/BatmanTheAnimatedSeries'', Mr. Freeze kicks open a fire hydrant and fires his FreezeRay at the geyser to create a rapidly rising column of ice that he rides up a skyscraper. The animators admit it's unrealistic, but it [[RuleOfCool looks really cool.]]