- Shokanbetsu Mountain Range | Koeru Co., Ltd. 1-22 Nishi 1-jo Kita 10-chome, Sunagawa City, Hokkaido 073-0161 | Koeru Co., Ltd.
- Hokko, Hokkaido Expressway 74.7KP | Hokko, Sunagawa City, Hokkaido 073-0108 | East Nippon Expressway Company Limited
Rivers
- Kyunaetoyohira River 1.2KP | Nishitoyonuma, Sunagawa City, Hokkaido 073-0148 | Ministry of Land, Infrastructure, Transport and Tourism
- Hokuden Bridge, Toyonuma Naegawa right bank 1.9K | Nishi 5-jo Minami, Sunagawa City, Hokkaido 073-0145 | Hokkaido Development Bureau
- Toyonumanae River 2.9KP right bank | Higashi 5-jo Minami 21-chome, Sunagawa City, Hokkaido 073-0135 | Ministry of Land, Infrastructure, Transport and Tourism
- Naetoyohira River 1.0KP | Higashi 4-jo Minami 14-chome, Sunagawa City, Hokkaido 073-0134 | Ministry of Land, Infrastructure, Transport and Tourism
- Pankeutashinai River 1.2KP | 7 Misago-cho, Sunagawa City, Hokkaido 073-0157 | Ministry of Land, Infrastructure, Transport and Tourism
- Pankeutashinai River 2.4KP | Yakeyama, Sunagawa City, Hokkaido 073-0115 | Ministry of Land, Infrastructure, Transport and Tourism
- Hokkoichinosawa River 3.2KP | Ichinosawa, Sunagawa City, Hokkaido 073-0107 | Ministry of Land, Infrastructure, Transport and Tourism
Ishikari River
- Sunagawa Reservoir Drainage Gate, Ishikari River Left Bank 85.3K | Oasis, Sunagawa City, Hokkaido 073-0100 | Hokkaido Development Bureau
- Sunagawa Reservoir drainage gate, Ishikari River left bank 85.3K | Nishitoyonuma, Sunagawa City, Hokkaido 073-0148 | Hokkaido Development Bureau
- Sunagawa Reservoir Nae Toyohira River inlet, Ishikari River left bank 85.6K | Sunagawa Reservoir Nae Toyohira River Inlet CCTV, Nishitoyonuma, Sunagawa City, Hokkaido 073-0148 | Hokkaido Development Bureau
- Sunagawa Reservoir Management Tower, Ishikari River Left Bank 86.0K | Sapporo Development and Construction Department Takigawa River Office Sunagawa Reservoir Management Center, Nishi 5-jo Minami 8-chome, Sunagawa City, Hokkaido 073-0145 | Hokkaido Development Bureau
- Sunagawa Reservoir Overflow Embankment Downstream, Ishikari River Left Bank 86.4K | Oasis, Sunagawa City, Hokkaido 073-0100 | Hokkaido Development Bureau
- Sunagawa Reservoir Overflow Embankment Upstream, Ishikari River Left Bank 86.5K | Oasis, Sunagawa City, Hokkaido 073-0100 | Hokkaido Development Bureau
- Sunagawa Reservoir 30m Steel Tower, Ishikari River Left Bank 86.6K | Nishi 6-jo Kita 2-chome, Sunagawa City, Hokkaido 073-0166 | Hokkaido Development Bureau
- Sunagawa Reservoir Panke Sluice, Ishikari River Left Bank 86.6K | Nishi 6-jo Kita 2-chome, Sunagawa City, Hokkaido 073-0166 | Hokkaido Development Bureau
- Sunagawa Bridge Water Level Observatory, Ishikari River left bank 87.3K | Ishikari River Sunagawa Bridge Water Level Observatory, Nishitoyonuma, Sunagawa City, Hokkaido 073-0148 | Hokkaido Development Bureau