Establishment of a Groundwater Management Index for the Szuchung Creek Hot-Spring

In the establishment of the groundwater management index of the Szuchung Hot-Spring Area, the sensitivity of the temperature change is much smaller than the sensitivity of the groundwater level change. Therefore, only the groundwater level can be used as the management index. According to the records of existing hot spring observations, the groundwater level of each observation well has changed significantly during the short period of time due to the influence of artificial utilization, and overall it is still affected by the abundance and dry season. In order to obtain a standard management basis, it is necessary to calculate the overall groundwater level change baseline first to deducte the human influence. But lacking the long-term development record of the measured hot spring well, so it can only use the existing data for data analysis. In order to obtain the threshold value of management indicators, thisstudy uses the mobile average and geometric average of Dashan Old Station and Public Bathroom Station to obtain the benchmark groundwater level of each station. Then, with the standard deviation of one standard deviation, two standard deviations, and the largest drop in history, the actual groundwater level, safe groundwater level, severe groundwater level, and bottom limit groundwater level can be obtained. After the comparison, it was learned that Dashan Old Station recorded the lower than the bottom limit groundwater level in about three days in March and April 2016, and the number of days was lower than the safe groundwater level. The actual groundwater level of the Public Bathroom Station was almost above the safe groundwater level.