Which preposition to use with neckar

on Occurrences 2%

Still to the rising sun they take their way Through clouds of dust, and gain upon the clay; When now the Neckar on its friendly coast With cooling streams revives the fainting host, That cheerfully its labours past forgets, The midnight watches, and the noonday heats.

below Occurrences 1%

On the Neckar below us, the fishermen glide about in their boats, sink their square nets fastened to a long pole, and haul them up with the glittering fish, of which the stream is full.

in Occurrences 1%

No river in the world, equal to the Neckar in size, flows for its whole course through more delightful scenery, or among kinder and happier people.

to Occurrences 1%

Then there is the Wolfsbrunnen, which one reaches by a beautiful walk up the bank of the Neckar to a quiet dell in the side of the mountain.

Which preposition to use with  neckar