I go to Havasu for spring break and for Desert Storm. Spring break is a blast if you are into the young party scene. Watch for drunk boaters and strict law enforcement. I am planning on going March 27 - 29, and possibly the weekend after if the weather is good. I would keep an eye in the weather if you are planning on going. Ill be at the naked turtle having bloody mary's for breakfast.
I will also be at Desert Storm... this is one of the best weekend in Havasu closely followed by Jet Ski weekend.
College Spring Break Dates:
http://www.tripsmarter.com/panamacit...sbcalendar.htm