Water-based pokemon like magikarp, slowpoke, dratini, etc. spawn at the edges of rivers far more than they do even 500m - 1km away. I work in an office next to

Water-based pokemon like magikarp, slowpoke, dratini, etc. spawn at the edges of rivers far more than they do even 500m - 1km away. I work in an office next to a river and it is definitely true. I suspect the old rumours of 'porygon is most likely found near libraries, etc.' is myth, but this definitely holds.