ISOGAL CONTOUR MAPS OF GEOTHERMAL AREA 1:50,000
| No.1 |
The Upper Stream of Tokachi River Geothermal Area ( Hokkaido ) Northern Komagatake Geothermal Area ( Hokkaido ) Southern Komagatake Geothermal Area ( Hokkaido ) Taisei-Kumaishi Geothermal Area ( Hokkaido ) |
| No.2 |
Shimokita Geothermal Area ( Aomori ) Hanamaki Geothermal Area ( Iwate ) Northern Kurikoma Geothermal Area ( Akita ) Southern Kurikoma Geothermal Area ( Miyagi ) Zao Geothermal Area ( Miyagi and Yamagata ) Southern Azuma Geothermal Area ( Fukushima ) |
| No.3 |
Nasu Geothermal Area ( Tochigi ) Northern Shirane Geothermal Area ( Nagano ) Southern Shirane Geothermal Area ( Gunmma ) Izu Geothermal Area ( Shizuoka ) Kii Mountainous Geothermal Area ( Wakayama ) |
| No.4 |
Garandake Geothermal Area ( Oita ) Waita Geothermal Area ( Oita and Kumamoto ) Aso Geothermal Area ( Kumamoto ) Kirishima Geothermal Area ( Kagoshima and Miyazaki ) Iojima Geothermal Area ( Kagoshima ) |