Yellow River Basin

     The stamp is part of set of four issued in 1957 to publicize the Yellow River control project. It shows a map of the basin of the Huang Ho, the Yellow River. The map is oriented with north at the top. There are four circles with symbols, from left to right: 1. symbol of an electric power line, 2. irrigation, 3. power line, 4. shipping.
     The Yellow River is China’s the sixth largest river in the world and the second largest river in China. It rises from Morinda Yen Kara, the Green Mountain Range, and flows through Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Sasnxi, Henan, Shandong and other provinces for 5,464 km, and empties into the Yellow Sea. It drains an area of 750,000 km².