[2] It flows from north to south, crossing the Demilitarized Zone and joining the Han River downstream of Seoul, near the Yellow Sea.

[3][4] On November 5, 2018, the councils of South Korea's Gangwon and Gyeonggi provinces, which border the DMZ, signed a “peace working agreement” at Dorasan Station in Paju, giving local approval to the Joint Utilization Zone.

During the Korean rainy season of July and August, the Imjin becomes a raging torrent, largely confined by its steep rocky banks.

The rapid runoff of approximately 95 percent of precipitation during heavy general rains has caused Imjin, on occasion, to rise at a rate of more than six feet per hour.

During the severe Korean winter, icy winds sweep down the Imjin; the sub-zero temperatures cause thick ice to form on the river.