CVL GRID river outlet

Hi, regardsI have made a mesh of a river with three outlets al its mouth, and a mesh of the sea, but only connects a single outlet. How could i get the three outlet of river’s mesh to connect with the sea´s mesh, and have a result like the one in the picture?
d07b4823-23b8-4c9c-b93d-4d3dc46647ba.jpg
d07b4823-23b8-4c9c-b93d-4d3dc46647ba.jpg