The of land on which Rohwer was built had been purchased by the
Farm Security Administration from tax-delinquent landowners in the 1930s. It remained largely abandoned until the
War Relocation Authority, which oversaw the World War II incarceration program, took it over in 1942. It planned to use this facility to incarcerate ethnic Japanese, including American citizens from West Coast areas considered strategic to the war effort. Governor
Homer Adkins initially opposed the WRA's proposal to build Rohwer and its neighbor,
Jerome, in Arkansas, but relented after being assured that the Japanese American detainees would be controlled by armed white guards at these facilities and they would be removed from the state at the end of the war. The Linebarger-Senne Construction Company was contracted to build the camp at a cost of $4.8 million; it worked under the supervision of the
Army Corps of Engineers. The land was heavily forested and swampy due to its proximity to the Mississippi River to the east. Extensive clearing and draining was necessary, making construction at the site a difficult and slow-going task. The camp was still under construction when the first inmates began to arrive. Ultimately the camp held administrative offices, schools, a hospital, and 36 residential blocks, each with twelve barracks divided into several "apartments", as well as communal dining and sanitary facilities, all contained within a guarded barbed-wire fence. Rohwer opened on September 18, 1942, and reached a peak population of 8,475 by March 1943. Most detainees had been forced out of their homes and businesses in
Los Angeles or the
San Joaquin Valley in California. A large portion of Rohwer inmates were school-age children, most born in the US. About 2,000 students attended the camp's schools, which were opened on November 9, 1942, after some delay. Adults took jobs with the administration, hospital, schools, and mess halls, in addition to agricultural work or labor details outside camp. As of the site used for residences and other buildings, officials used the remainder of Rohwer's land to grow more than 100 agricultural products. These were used to supplement the inmates' food rations (kept to a bare minimum of 37 cents a day per inmate to avoid rumors that the WRA was "coddling" Japanese Americans). The decline in population, combined with earlier unrest over poor working conditions in the camp, resulted in authorities closing the Jerome camp at the end of June 1944. A significant number of former Jerome inmates were transferred to Rohwer. Together with the Tule Lake Segregation Center, Rohwer was the last WRA camp to close, on November 30, 1945. ==Rohwer today==