4CM: the highest daily increase of water level in Baotu Spring.

　　The water level of Baotu Spring ,27.48 meters on April 17th ,has increased a little after the rain, 4cm more than 16th . Many citizens are looking forward to more rain to supply the springs in Ji’nan.

　　Because of the hysteresis of the rain supplying the underground water, the first rain this spring in Ji’nan on April 16th supplies 4cm for Baotu Spring ,but it is so precious for Baotu Spring which has been in a state of decline for such a long time, also this 4cm is the highest daily increase this year. Besides the factor of rain, government has also intensifies efforts to supply more water to Baotu Spring.