大柏川第一調節池緑地 Okashiwa River #1 Reservoir

Bird watching green space

Ichikawa City's plentiful greenery and waterways contrast with the busy urban areas in bordering Funabashi and Kamagaya Cities. For bird watchers in the area, the Okashiwagawa #1 Reservoir is a wide-open space worth visiting. The reservoir was constructed in the 2000s to prevent flooding of the low-lying areas in the Mama River basin. The Okashiwa River that runs alongside the reservoir is filled with fish and attracts wading birds and cormorants. The reservoir itself has a nature interpretation center with Jomon-era artifacts excavated on the site. There isn't much tree cover as this is a wetland basin with ponds with meandering paths. The best time to go is in cherry blossom season, strolling along the river to the reservoir.