In 1986, it became widely known to the public that the USSR was planning to build another hydroelectric power plant on Latvia's largest river Daugava, and that a decision had been made to build a metro in Riga.
1986年、ソ連がラトビア最大の河川ダウガヴァ川に追加の水力発電所を建設し、リガ市内にも地下鉄を建設する予定であるという情報が広まっていた。