There are two synagogues in Lincoln.  One reform and one conservative.  Here is their contact information for students interested in getting involved in a Jewish community outside of Hillel. 
Tifereth Israel (Conservative)
3219 Sheridan Boulevard
Lincoln, NE 68502
Office: (402) 423-8569
South Street Temple (Reform)
B'nai Jershurun
2061 South 20th Street
Lincoln, NE 68502
Office: (402) 435-8004
Rabbi Ilan Emanuel: (402) 416-2321