It does not flow into a sea. It is a tributary of the Rhine River.
which sea or ocean does the river yensei flow into
River Aar.
The river Nile flow into Mediterranean sea
it joins the river ouse
The river flows into the Irish Sea at Lytham
There are two rivers in Switzerland which have three letters in their names. The river Aar and the river Inn
Rivers flow into the Caspian Sea, they do not flow out of. An example is the Volga River.
The Sea of Cortez.
In Caspian Sea
The North Sea
Aral sea.
Irish sea