In 2016, Tohoku University had 10 faculties, 16 graduate schools and 6 research institutes, with a total enrollment of 17,885 students.[4] Subsequent to the 2011 Tōhoku earthquake and tsunami, the university was declared closed until further notice, but with a tentative re-opening date of the end of the following April.[5] The Aobayama, Katahira, Amamiya, and Kawauchi campuses are all at least 12 kilometers (7.5 mi) from the ocean, towards the mountains, and therefore suffered no damage resulting from the tsunami.Classes have resumed normally since early May 2011 and plans for restoring, reinforcing or replacing damaged buildings are underway.The radiology department has been actively measuring radiation levels throughout the city of Sendai since the Fukushima Nuclear Power Plant meltdown, which is about 100 kilometers south.[37] In addition, Nature Index ranked Tohoku University as 4th in Japan (90th in the world, 38th in Asia Pacific) on 2023 tables: Institutions.