River
- Hirado Observation Station, Oshi River | Toide, Kumagaya City, Saitama Prefecture | Saitama Prefecture River Surveillance Camera
- Idono Bridge Observatory, Fukukawa River | Nishino, Kumagaya City, Saitama Prefecture | Saitama Prefecture River Disaster Prevention Information
Arakawa River
- Kumagaya Bridge, Arakawa River Left Bank 79.8K | Oshikiri, Kumagaya City, Saitama Prefecture | Arakawa Upstream River Office
- Kuge Bridge, Arakawa River Left Bank 73.6K | Kuge, Kumagaya City, Saitama Prefecture | Arakawa Upstream River Office
- Arakawa Ohashi Bridge, Arakawa River Left Bank 76.5K | Enokicho, Kumagaya City, Saitama Prefecture | Arakawa Upstream River Office
- Oashi Bridge, Arakawa River Right Bank 68.4K | Koyatsubayashi, Kumagaya City, Saitama Prefecture | Arakawa Upstream River Office
Tone River
- The Other Side of the Kyuhaku River drainage gate, Tone River Right Bank 160K | Kuzuwada, Kumagaya City, Saitama Prefecture | Tonegawa Upper River Office
- Ishida River Confluence, Tone River Left Bank 165.5KP | Menumakojima, Kumagaya City, Saitama Prefecture | Tone River Upstream River Office
- Tosui Bridge Upstream, Tone River Right Bank 166K | Menumadai, Kumagaya City, Saitama Prefecture | Tone River Upstream River Office