In order to understand the status of the use of hot spring resources and to achieve sustainable use, the long-term monitoring of water levels and water temperatures is necessary. In this study, for four monitoring stations in Ruisui region, instruments were placed in the monitoring station to observe the changes in water level and water temperature, and a trend chart of water level, water temperature, and water quality was established.
As of the end of 2017, it can be seen that there is a positive relationship between rainfall and water level, that is, as the rainfall increases, the water level rises. According to the observations of 2017 in 2016, the water levels of all four monitoring wells have declined. Compared with the annual average water level in 2016, the number of well No. 1 has decreased by 0.45m, that of No. 2 well has decreased by 5.40m, that of No. 3 well has decreased by 5.81m, and No. 4 well has decreased by 3.90m.
In terms of single-point monitoring, Well No. 1 (depth 15m), Well No. 2 (depth 85m), Well No. 3 (depth 56.7m), Well No. 4 (depth 30m) will cause water temperature to drop during heavy rainfall.
In terms of vertical well temperature, the observed temperature in October 2017 was about 25°C at 10m below Well No.1, and about 30?C at 30m below the well, which was an increase of 30°C. The temperature at 60m below Well No. 2 is about 31°C, and the temperature at 80m downhole is about 30°C. The temperature at 40m below the No. 3 well is about 25°C, and the temperature at 160m underground is about 50°C, which is an increase of 25°C. The temperature at the 20m below the No. 4 well is about 25°C, and the temperature at the well 140m is about 40°C, an increase of 15°C.
In terms of conductivity, the conductivity of Well No. 1 is between 1090 and 1306 uS/cm, with no significant change. Wells 2, 3, and 4 have different electrical conductivity values in different seasons. The reason may be caused by the mixing of cold groundwater. The change in PH value is less obvious.