[SomebodyUnown]

Updated
(You can PM me in game if you think something is worth adding) 

So competitive players, or players that just want to make their Pokemon stronger overall who wants to EV train, but might have problems finding the right map. There you go, all the information down there!!! 
Beginners who don't know what EV spread to run, check out Blau's EV Training Guide


Maps are listed in ascending order by level. 

EV Trained

Map Name (Method)
Pokemon to fight: Levels Found
Average EVs in map (10K straight battles) (legends+ uncounted)
Shiny available

HP

Warriors Valley (Old Rod)
Gastrodon-West: Level 54-56
1.8982 HP
Shiny-Clauncher

Reptile Valley (Good Rod)
Barboach, Gastrodon-West: Level 78-79
1.4324 HP
Shiny-Phione

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Atk

Hydro Beach (Super Rod)
Krabby: Level 54-55
0.9484 Atk
Shiny-Kyurem-White

Draconic Ruins (Old Rod)
Carvanha: Level 68-69
0.9667 Atk
Shiny-Blastoise

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Def

Earwig Lake (Walking)
Vivillon(s): Level 17-19
0.7486 Def
Shiny-Diglett

Mantis Town (Walking)
Vivillon(s): Level 17-19
0.72 Def
Shiny-Lugia

Hornet Path (Walking)
Vivillon(s): Level 17-19
0.867 Def
Shiny-Vivillon-Tundra

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SpAtk

Coral Atoll (Good Rod)
Psyduck: Level 44-45
0.9467 SpAtk
Shiny-Corsola

Reptile Valley (Old Rod)
Psyduck: Level 68-69
0.9468 SpAtk
Shiny-Blastoise

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SpDef

Bluegill Lakes (Super Rod)
Tentacool: Level 26-28
0.9484 SpDef
Shiny-Seel

Serpent Forest (Old Rod)
Tentacool: Level 68-69
0.9468 SpDef
Shiny-Snover

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Spd

Combat Fields (Good Rod)
Poliwhirl: Level 65-66
1.9057 Spd
Shiny-Staryu

[mailmeharry2008]

Thanks for giving me credit

[ch17175]

Interesting

[Mysterium]

For sake of newbies...
ADD:

ATK:
Krabby, 55, Super Rod, Hydro Beach
Corphish, 34, Surf, Bass Swamp

HP:
Ducklett, 47, Good Rod, Breeze Hill

SPD:
Luvdisc, 45, Good Rod, Seashell Islands

[SomebodyUnown]

For sake of newbies...
ADD:

ATK:
Krabby, 55, Super Rod, Hydro Beach
Corphish, 34, Surf, Bass Swamp

HP:
Ducklett, 47, Good Rod, Breeze Hill

SPD:
Luvdisc, 45, Good Rod, Seashell Islands

Thanks, will add later. Next time, pm me in the game so I see faster.