国分川

Can a river hold the key to a city’s heart? Here, by the Kokubunji River, or as it’s correctly known, the Kokubun River, the answer seems to be a resounding yes. This river, flowing through Tokyo’s Kokubunji and Ichikawa cities, has shaped not only the landscape but also the lives and history of its people. Kokubun River isn’t just a waterway. It’s a time capsule, carrying whispers of ancient settlements, echoes of battles fought, and dreams of a future yet to be written. The Kokubun River’s journey begins in western Tokyo, near Kokubunji Station. From there, it carves a path westward, sometimes hidden beneath the city streets, a secret vein pulsing with life. The river’s upper reaches are officially known as the Matsuhi Dai Drainage Channel, merging with the Jogasaki Drainage Channel before transforming into the Haruki River. But as it flows under the Naganuma Bridge, it assumes the name we know: Kokubun River. The river widens as it meanders through residential areas, its banks adorned with low trees and lush grasses, a touch of nature’s artistry amidst the urban sprawl. Near the Higashi Murayama area, the Kokubun River meets the Murayama River, growing in strength and size. It then splits, a portion diverting into the Kokubun River Diversion Channel, a crucial piece of engineering designed to mitigate flood risks. The remaining flow continues its southward journey, eventually joining the Shinmachi Waterway and entering Ichikawa. Even in Ichikawa, the Kokubun River’s influence remains strong, flowing alongside the Haruki River before ultimately merging with the Man River. The Kokubun River hasn’t just witnessed history; it’s been an active participant. In the past, during typhoons, the Kokubun River would overflow, causing devastating floods that impacted hundreds of hectares and thousands of homes. The construction of the Kokubun River Diversion Channel was a pivotal moment in the river’s history. This 3,362-meter channel, diverting a significant portion of the Kokubun River’s flow towards the Tone River during periods of heavy rainfall, has dramatically reduced flood damage, protecting Ichikawa and its residents. This feat of engineering, completed in 1994, underscores the vital role the Kokubun River plays in the region’s well-being. However, the construction of the diversion channel was not without its challenges. In 1991, Typhoon Mireille caused a tragic accident at the construction site. Four officials and three workers lost their lives when a cofferdam failed, leading to their deaths by drowning. This tragic event serves as a solemn reminder of the power of nature and the risks involved in taming it. Today, the Kokubun River is more than just a flood control system. It’s a source of beauty and recreation. The annual Kokubun River Carp Streamer Festival, held near the Kandabashi Bridge, transforms the riverbanks into a vibrant spectacle, with hundreds of colorful carp streamers fluttering in the breeze. This festival, a beloved local tradition, exemplifies the Kokubun River’s role as a focal point for community and celebration. As you stand here, by the Kokubun River, take a moment to reflect on its enduring presence. Imagine the ancient people who settled on its banks, the battles fought for its control, and the tireless efforts to harness its power for the benefit of all. The Kokubun River isn’t just a river. It’s a testament to the resilience and ingenuity of the people who have lived alongside it for centuries.