A storm drain is designed to drain excess rain and ground water from impervious surfaces such as paved streets, car parks, parking lots, footpaths, sidewalks, and roofs. Storm drains vary in design from small residential dry wells to large municipal systems. They are fed by street gutters on most motorways, freeways and other busy roads, as well as towns in areas which experience heavy rainfall, flooding and coastal towns which experience regular storms. Many storm drainage systems are designed to drain the storm water, untreated, into rivers or streams. It appears in many GTA games serving as water bodies.
Grand Theft Auto: Vice City
Storm drains were first initiated in Grand Theft Auto: Vice City on a minor scale. It features only a lone storm drain situated in east Little Haiti. The storm drain itself is turf of the Haitian Gang, with their graffiti sprayed throughout the storm drain. This drain concludes north to Escobar International, into the ocean. Apparently, the storm drain is not developed with respect to a prodigious storm. Symbols of Voodoo Dolls can also be perceived on the walls of the storm drain, representing Haitian Voodoo Rituals. Players have speculated it to be used as a concealed Voodoo Hub. Players claim to have seen Crocodiles in these drains, but no evidence is present to support these claims. It could be possible that a storm already hit the region in the past as some Haitian gang members claim that The storms are coming in. It may be a hint towards the previous storms.
Grand Theft Auto: San Andreas
Los Santos Storm Drain is a flood drain canal in Los Santos, San Andreas. It appears in Grand Theft Auto: San Andreas and is based on the real life Los Angeles River. In San Andreas, the canal passes through 11 districts within the city of Los Santos; starting from Downtown, then Commerce, Market, Little Mexico, Willowfield, East Los Santos, Idlewood, Ganton, East Beach, and finally ends at Ocean Docks. The storm drain is always empty even when it rains no water appears in the canal but on all versions of the game with the use of the water level cheat the storm drain can be filled up with water. On the PS2 version the drain can take up to 8m of water and if above that level the drain will overflow. Using the water level cheat however will raise the water level all over San Andreas and even with 8m of water some areas in the state like Blueberry will be completely submerged in water.
Grand Theft Auto V
The Los Santos Storm Drain, also known as the LS River or the LS Canal, is a large storm drain that runs throughout Los Santos, allowing waste and sewage to flow into the Pacific Ocean. It appears in Grand Theft Auto V and Grand Theft Auto Online and is based on the Los Angeles River.
Like the real world river it is based on, the LS River starts off as a natural water feature from its origins in the Tatavian Mountains to the north of the Land Act Reservoir. The river is dammed at the Land Act Dam to form the reservoir and then flows down the mountain to the source of the canal structure in East Vinewood. From there on, it is contained entirely within concrete canals. The LS Storm Drain is very large in comparison to its predecessor. The canal features more access tunnels and is much longer and more detailed. It flows north-south through East Vinewood, past Downtown Los Santos by Textile City, forms the border between South Los Santos and East Los Santos where it merges at La Mesa with a second unnamed river that has its own source to the east and from there it flows into the Pacific Ocean at the Port of Los Santos between Cypress Flats and Elysian Island.
The secondary river that joins at La Mesa has its own source in Murrieta Heights. The small creek forms at the southern edge of the Tatavian Mountains in front of an overpass of the Palomino Freeway. The creek forms a small pool and flows through flood control gate structures into concrete channels. There are several maintenance crews here along with several pieces of flood control machinery. It flows in a northeast-southwest direction to its confluence point with the main river. Also there are couple of signs and one strange graffiti.
There is a second storm drain also referred to as the Los Santos Storm Drain. The smaller storm drain canal has no natural source and flows from the Port, just west of the main river mouth in a southeast-northwest direction between La Puerta and South Los Santos parallel to Grove Street before ending in Vespucci, where it flows directly out into the Pacific Ocean. The smaller canal probably gets its water from stormwater and sewage pipes with the main one seen at La Puerta.