AAO

Maybe the QS ranking will be of help? https://www.topuniversities.com/university-rankings/university-subject-rankings/2017/geography Based on QS, the Top 20 in the US are the following: UC Berkeley UCLA University of Washington University of Wisconsin-Madison University of Chicago University of Minnesota Ohio State UNC, Chapel Hill Arizona State Penn State CUNY Clark Indiana University Bloomington Michigan State UC Davis UC Santa Barbara University of Colorado Boulder University of Illinois at Urbana-Champaign Boston University Dartmouth