What are the names of 2 Pennsylvania rivers?

1.) Delaware River 2.) Christina River 3.) Schuylkill River 4.) Little Schuylkill River 5.) Lehigh River 6.) Lackawaxen River 7.) Gunpowder River 8.) Susquehanna River 9.) Juniata River 10.)...

There's the Yellow River in Asia, and the Brown River in Colorado.

confluence.

Göta älv & Nissan

The Thames and the Mersey.