@hsmomof3 There are some
http://www.ou.edu/coe/currentstudents/studentsupport/scholarships.html
Note that GPA and test scores are not necessarily the ONLY criteria. It is my gut feeling that they spread the scholarships around so a NMF may be unlikely to get one since they have the guaranteed NMF package.
I do not know when winners of these scholarships are notified. You could call the Engineering college.