Table 1 List of the observation wells

No.	well	equiped sensors
1.	Tsukuba	water level, water temp.
2.	Kawasaki	water level
3.	Himenoyu	flow rate, water temp., radon con.
4.	Hiekawa-minami	water level
5.	Ohmuroyama-kita	water level, water temp.
6.	Ito(Akazawa)	flow rate, water temp., radon con.
7.	Kusanagi	water level, water temp., borehole strain, GPS
8.	Fujieda	radon con.
9.	Haibara	water level, water temp.
10.	Makinohara	water level, water temp.
11.	Ogasa	water level
12.	Kakegawa	water level
13.	Daito	water level
14.	Hamnaoka	water level, water temp.
15.	Omaezaki	water level
16.	Toyohashi	water level, water temp., radon con., borehole strain, GPS
17.	Otaki	water level, water temp., borehole strain, seismometer, GPS
18.	Miyagawa	water level, borehole strain, seismometer
19.	Atotsugawa	water level, borehole strain
20.	Kuwana	water level, water temp.
21.	Nan'no	water level, water temp.
22.	Hokusei	water level, water temp.
23.	Hatasho	water level, water temp., borehole strain
24.	Kinomoto	water level, water temp.
25.	Hanaore	water level, water temp., borehole strain, seismometer
26.	Ohara	water level, water temp., borehole strain, seismometer
27.	Obaku	water level, water temp. seismometer
28.	Koryo	water level, water temp.
29.	Gojo	water level, water temp.
30.	Negoro	water level, water temp., borehole strain
31.	Ten'nouji	water level, water temp., borehole strain
32.	Ikeda	water level, water temp., borehole strain, seismometer, GPS
33.	Inagawa	water level, water temp., borehole strain, seismometer
34.	Takarazuka	water level, water temp., borehole strain, seismometer
35.	Hirabayashi	water level, water temp. seismometer
36.	Ikuha	water level, water temp., borehole strain, seismometer
37.	Seidan	water level, water temp.
38.	Bando	water level, water temp., borehole strain
39.	Yasutomi	water level, water temp., radon con., borehole strain, seismometer, GPS
40.	Yasutomi-kita	water level, water temp.