What rivers are named after colors?
* Green River * Red River * Yellow River * Rio Negro (Black River)
The answer depends on what list you look at. According to the Wikipedia list, there are 39 rivers in North Dakota, but only 34 of them are named "river". The other 5 are named "creek". Geology.com lists 24 rivers in North Dakota with 20 of them named "river" and 4 of them named "creek". The major rivers are the James River, the Missouri River, the Red River (of the North), and the Souris River.
The Houses of Hogwarts are: Gryffindor...named after founder Godric Gryffindor. Colors are scarlet and gold. Ravenclaw...named after founder Rowena Ravenclaw. Colors are blue and bronze. Hufflepuff...named after founder Helga Hufflepuff. Colors are yellow and black. Hufflepuffs are particularly good finders. Slytherin...named after founder Salazar Slytherin. Colors are green and silver.