16-Feb-2017 -- This is the closest confluence that is accessible from Tokyo. It can easily be accessed by foot. To get here, take the Tsukuba Express to Moira station, and then transfer off onto a smaller train (Kantetsu-Joso line) and stop off at the Kokinu station. The town is hardly a metropolis compared to Tokyo, but from here you can take a flat walk across the river to the rice paddy.
It was a cold and windy winter day when attempting this confluence and there was nobody in the vicinity of the confluence. The ground was dry and ploughed.