Here are few journals publishing undergraduate research:
- The Oswald Review: http://web.usca.edu/english/oswald-review/
- The Pittsburgh Undergraduate Review: http://www.pur.honorscollege.pitt.edu/
- The Stanford Undergraduate Research Journal: http://surj.stanford.edu/
- The Valley Humanities Review: http://www.lvc.edu/vhr/
- Young Scholars in Writing: http://www.bk.psu.edu/academics/degrees/26432.htm
- The Journal of Undergraduate Research and Scholarly Excellence: http://jur.colostate.edu/
Search “undergraduate research journals” to find many more!