"Shiny Magikarp odds - Post water event"

#PokemonGO: I've FINALLY caught my first shiny magikarp today! I was wondering if anyone actually knows what the odds are of finding a shiny karp after the water event. I know I read that during the event it was 1 of 401 or something, but I am guessing that changed, since the spawns were dramatically decreased post event. via /r/TheSilphRoad http://ift.tt/2qvhSEu