This map depicts the precipitation distribution within the Yellow River Basin. The rainfall is unevenly distributed in space and time. It shows a decreasing trend from southeast to northwest and is mainly concentrated from July to September. The basin´s mean annual precipitation is around 520 mm. The lowest precipitation values can be found in Ningxia/Inner Mongolia plains and the Gobi desert, the highest in the lower reaches of the Yellow River.
The annual mean temperature of the Yellow River Basin is highlighted in this map. Likewise the precipitation, a clear gradient from west to east can be observed, with low values on the Qinghai-Tibet Plateau and relatively high values on the North China Plain near the coast.