Shiny Pokemon are Still Available
Water Festival has come to an end about 2 hours ago, but that does not mean that Shiny Pokemon has left for good.
Niantic used the official Pokemon GO twitter account to announce that Shinies are here to stay. They did not make a statement yet as to how rare are these rare Shinies and if they follow the rarity of the rest of the games, but they did in fact called them…rare.
The Water Festival has come to an end, but rare golden Magikarp are still out there. Keep an eye out, Trainers!
— Pokémon GO (@PokemonGoApp) March 29, 2017
As you may already understand though, Magikarp spawns will go back to normal. Whatever that means for your area and…if you still (like us) have not got one yet…good luck!!