Dr. Tullis has been recognized by the American Society of Civil Engineers for his significant contributions in the area of cavitation research.
• Recipient of the American Society of Civil Engineers "Hydraulics Structures Medal", 1993.
• Recipient of the American Society of Civil Engineers "Huber Research Prize", 1977
• Outstanding Researcher Award, Utah State University, 1979
• Recipient of the Outstanding Advisor Award, Utah State Univerisity, 1992