That looks like a drainage pipe that should be removing water and not delivering water. Plastic corrgated pipe suggest it is a land drain.
Two locations delivery the same coloured water suggest to me that the drainage system is not coping.
Quite possibly that land drains on higher ground are draining that land but the amount of water is too much for the outlets to the river and as a result water is backing up in the system. Hence water is coming out of the drains in the lower drain systeme inlets.