Researches on water cycle in Taihang Mt. is vital not only to mountainous areas but
also to groundwater recharge in adjacent piedmont.As one of the essential recharge sources for
North China Plain (NCP) , a few results on status of water cycle and groundwater recharge into
NCP have been reported, and the associated mechanisms have not been revealed clearly.Here,
the mechanism and recharge processes of water in Taihang Mt. to NCP, with a case study in
Niujiazhuang Catchment and the nested Shimen Catchment within it which is located at the
middle of Taihang Mt., were presented.The results, from April to November 2004 for example,
indicate the amount of lateral recharge from mountainous area to the adjacent piedmont was
1.53×106m3 with recharge ratio ( calculated by total recharge /total precipitation) of 0.242 in the
order of upper reaches