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Continuous growth of 21 cm: the underground water level of Baotu Spring.
The underground water level of Baotu Spring has increased continuously for 21 cm as Ji’nan has entered the main flood period. Before this rainfall the underground water level of the famous spring was in the dangerous period when the water level has decreased to 27.73 meters, drawing near to 27.60 meters, the red warning line ( a maximum of 6cm in a single day). But since June 21st the water level has increased to 27.94meters, bouncing 21 cm in these 5 days under the assistance of the rain.