What is the altitude of the yellow river at different positions from the source?

Question

I have an assignment to graph the height of the water of the yellow river in china at different distances from the source, but have no site to rely on.

Answer 1

http://www.cis.umassd.edu/~gleung/y_rive...

Answer 2

Start with the 'Yellow River' article in Wikipedia. It leads to some informative sites, some in Chinese. Also you can check the elevations of the major tributaries at their junctions with the main stream to construct your graph.