Formation and Evolution of Ground Fresh Water (Blackish Water) in the Yellow River Delta
黄河三角洲地区地下淡水（微咸水）的形成与演化

Ground fresh water (brackish water) is short in the Yellow River Delta. The second salt water intrusion formed a large area of saline water in the southern alluvial plain, which has gradually become fresh water. However, due to overpumping of groundwater, the northern saline water has moved to the southern area. As a result of the change in Yellow River course, fresh water (brackish water) can only be found on the sides of the river course and along the old river course in the sea alluvial plane. The fresh water has been salted along the Yellow River Delta old course and crevasse splay.